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| Company | Stage | Founded | Description |
|---|---|---|---|
| 100ms | A | 2020 | Video conferencing and live streaming APIs. |
| 8090 | A | 2022 | AI software development for regulated companies. |
| AI21 Labs | D | 2017 | Natural Language Processing tools. |
| APIMATIC | seed | 2014 | Autogenerated SDKs and example code for APIs. |
| Ably | B | 2016 | Realtime application infrastructure. |
| Acceldata | C | 2018 | Data observability. |
| Activeloop | A | 2018 | Data lake for deep learning. |
| Aerospike | E | 2009 | NoSQL low latency data store. |
| Agent Relay | pre-seed | 2026 | Agent-to-agent communications. |
| Agora | Public | 2014 | Voice, video, messaging and streaming APIs. |
| Airbyte | B | 2020 | Open source data integration and pipeline. |
| Aiven | D | 2016 | Managed open source cloud data platform. |
| Algolia | D | 2012 | Search API as a service. |
| Align AI | seed | 2021 | User analytics for AI products. |
| Alpaca | D | 2015 | Stock and crypto trading API. |
| Ambassador | acquired | 2014 | Dev tools for Kubernetes. |
| Anthropic | H | 2021 | Large language models (LLMs). |
| Antimatter | acquired | 2022 | Data access control. |
| Anyscale | C | 2019 | Large language model (LLM) infrastructure. |
| Apollo | D | 2016 | GraphQL platform. |
| Aporia | acquired | 2019 | AI model input and output security and control. |
| Arcade | A | 2024 | Auth, tools, and governance for AI agents. |
| Arcee AI | A | 2023 | Open-weighted foundational LLM lab. |
| Archera | B | 2019 | Cloud cost control. |
| Arga Labs | pre-seed | 2025 | Real-world sandboxes for AI systems. |
| Arize | C | 2019 | Machine learning model observability. |
| Arnica | seed | 2021 | Application and code security tools. |
| Aspect Build | seed | 2021 | Bazel build platform and support. |
| AssemblyAI | C | 2017 | Speech AI models via a web API. |
| Astronomer | D | 2018 | Airflow data pipelines. |
| Atlas Cloud | seed | 2024 | Full-modal AI inference platform. |
| AuthZed | A | 2020 | Authorization infrastructure. |
| Authentik Security | seed | 2022 | User identity management platform. |
| Aviator | seed | 2021 | Developer tools for code repositories. |
| Axiom | seed | 2020 | Logging and tracing. |
| Axolo | pre-seed | 2021 | Code review automation in Slack. |
| Azion | A | 2011 | Application hosting platform. |
| Bandwidth | Public | 1999 | Communications platform-as-a-service. |
| Barndoor | seed | 2024 | AI agents control plane. |
| Baseten | E | 2019 | Inference platform for AI models. |
| BentoML | acquired | 2019 | Inferencing provider for AI models. |
| Better Stack | A | 2021 | Observability and log management. |
| Bit | B | 2015 | Composable software components. |
| Bitrise | C | 2015 | Continuous integration and delivery for mobile. |
| BlackBox AI | seed | 2022 | AI coding agents. |
| Bland | C | 2023 | Voice AI for regulated industries. |
| Bodo | A | 2019 | Parallel computation for data analytics. |
| Box | Public | 2005 | Storage, CMS, and workflows. |
| Braintrust | B | 2023 | LLM prompting and evaluation. |
| Bright Data | private equity | 2014 | Data scraping and collection. |
| BrowserStack | B | 2011 | App and browser device simulation testing. |
| Browserbase | B | 2024 | Headless browsers-as-a-service. |
| Bubble | A | 2012 | Low code / no code application builder. |
| Bugcrowd | F | 2012 | Crowdsourced security via bug bounties. |
| BuildBuddy | seed | 2019 | Hosted Bazel continuous integration. |
| Buildkite | B | 2014 | Continuous integration pipeline platform. |
| Bump | pre-seed | 2017 | API creation tools. |
| CData | C | 2010 | Real-time data sync. |
| Cartesia | A | 2023 | Real-time voice AI. |
| Carto | C | 2012 | Spatial data analysis platform. |
| Cast AI | C | 2019 | Cloud computing cost controls. |
| Census | B | 2018 | Data activation platform for data warehouses. |
| Cerebrium | seed | 2022 | Machine learning platform for training and deployment. |
| Chainguard | D | 2021 | Software supply chain security. |
| Chainlink | C | 2014 | Decentralized computing platform. |
| Chalk | A | 2022 | Machine learning infrastructure. |
| Chameleon | A | 2015 | In-product walkthroughs and analytics. |
| ChaosSearch | B | 2017 | Data indexing for input into analytics. |
| Checkly | B | 2018 | Code-based monitoring. |
| Checkr | E | 2014 | Background checks and personal data lookup infrastructure. |
| Chroma | seed | 2022 | Open source embedding vector database. |
| Circle | Public | 2013 | Payments infrastructure via blockchain. |
| CircleCI | F | 2011 | Hosted continuous integration. |
| Clarifai | acquired | 2013 | Machine learning APIs. |
| Cleanlab | A | 2021 | Data quality issue identification and remediation. |
| Clearbit | acquired | 2015 | Go-to-market intelligence data and APIs. |
| Clerk | B | 2019 | User management platform. |
| ClickHouse | D | 2021 | Column-oriented datastore. |
| Cline | A | 2024 | Open source coding agents. |
| CloudAgent | pre-seed | 2026 | AI agent for DevOps tasks. |
| Cloudflare | Public | 2009 | Content delivery network and web app infrastructure. |
| Cloudsmith | C | 2016 | Software artifact management. |
| Cockroach Labs | F | 2015 | Distributed SQL database. |
| Code Input | pre-seed | 2025 | Code merge and pull request automation. |
| CodeRabbit | B | 2023 | AI code reviews. |
| CodeSee | acquired | 2019 | Code visualization and automation. |
| CodeWords | seed | 2023 | AI agent creation and operations. |
| Codefresh | acquired | 2014 | Continuous integration and delivery platform. |
| Coder | C | 2017 | Cloud development environment provisioning. |
| Cohere | F | 2019 | Natural language processing as a service. |
| Comet | B | 2017 | Machine learning model lifecycle management and monitoring. |
| Comfy | B | 2024 | Workflow engine for visual AI |
| Confident AI | pre-seed | 2023 | Evaluation infrastructure for LLMs. |
| Confluent | acquired | 2014 | Apache Kafka hosting and tooling. |
| Contentful | acquired | 2013 | Headless content management system (CMS). |
| Context.dev | bootstrapped | 2024 | Company and brand data API. |
| Convex | A | 2021 | Backend infrastructure-as-a-service. |
| Convoy | pre-seed | 2022 | Webhooks proxy. |
| CopilotKit | A | 2023 | AI agents SDK. |
| Coralogix | F | 2014 | Infrastructure observability. |
| Couchbase | G | 2009 | Distributed NoSQL data store. |
| Courier | B | 2019 | Developer infrastructure for product notifications. |
| Coval | A | 2024 | Voice AI testing, evals, and QA. |
| Credal | seed | 2022 | Data workflows and LLM connections. |
| CrewAI | A | 2024 | Multi-agent workflows and deployments. |
| Crowdstrike | Public | 2011 | Cybersecurity products. |
| Cube | B | 2019 | Data source and application middleware. |
| Cursor | B | 2023 | LLM copilot-based code editor. |
| Cypress | B | 2015 | Testing automation tools. |
| DBOS | seed | 2023 | Serverless PostGreSQL and TypeScript platform. |
| Dagger | A | 2018 | Continuous integration build pipelines. |
| Dagster | acquired | 2018 | Data pipeline orchestration. |
| Daily | B | 2016 | WebRTC-based APIs for video and audio app development. |
| Dash0 | B | 2023 | OpenTelemetry-based observability. |
| DataStax | acquired | 2010 | Vector database. |
| Datadog | Public | 2010 | Application monitoring, security and observability. |
| Datadome | C | 2015 | Bot protection. |
| Datafold | A | 2020 | Data observability and quality issue mitigation. |
| Dataiku | F | 2013 | Data analysis and visualization platform. |
| Daytona | A | 2023 | Development environment manager. |
| DeepL | C | 2017 | AI translator and writing tools. |
| Deepchecks | acquired | 2019 | Evaluation for LLM-based applications. |
| Deepgram | C | 2015 | Voice AI platform. |
| Deepinfra | B | 2022 | Hosted AI models-as-a-service. |
| DeltaStream | A | 2020 | Event stream processing. |
| Descope | seed | 2022 | Authentication management. |
| Detectify | B | 2013 | Security vulnerability scanning, monitoring and pentesting. |
| DevCycle | seed | 2021 | Software feature flags. |
| DevZero | A | 2022 | Build and test in a production-clone cloud environment. |
| Didit | seed | 2023 | Identity and fraud detection. |
| DigitalOcean | Public | 2012 | Cloud computing infrastructure. |
| Directus | A | 2020 | Application backend-as-a-service. |
| Ditto | B | 2018 | Cross-platform device data sync. |
| Dolby.io | acquired | 2020 | Real-time streaming infrastructure. |
| Doppler | A | 2018 | Secret environment variables syncing and security. |
| Dragonfly | A | 2022 | In-memory key-value pair datastore. |
| Duality | B | 2016 | Privacy-enhanced data computing. |
| Dynatrace | Public | 2005 | Infrastructure monitoring and security. |
| E2B | A | 2023 | AI agents cloud. |
| Earthly | seed | 2020 | Build framework and continuous integration. |
| Eden AI | pre-seed | 2021 | AI model orchestration. |
| Edgee | pre-seed | 2024 | Open source edge computing. |
| Elastic | Public | 2012 | Open source search solutions. |
| ElevenLabs | C | 2022 | Voice cloning. |
| Encord | C | 2020 | AI model testing, evaluation, and data management. |
| Endor Labs | B | 2021 | Software supply chain security. |
| Engram | A | 2025 | Open source persistent AI agent memory. |
| Entire | seed | 2026 | AI coding agents and human interactions. |
| Epsilla | pre-seed | 2023 | Retrieval-augmented generation-as-a-service. |
| Esper | C | 2017 | Android device fleet management platform. |
| Evervault | B | 2019 | Payments security. |
| Exa | C | 2021 | Search engine for data and embeddings. |
| Expo | B | 2013 | Cross-platform native apps and websites development kit. |
| Factory | C | 2023 | AI coding agents. |
| Fal | D | 2021 | AI model fine-tuning and hosting. |
| FalkorDB | seed | 2023 | Graph database. |
| Fastly | Public | 2011 | Content delivery network (CDN) and cloud security. |
| Fastn | seed | 2023 | No-code/low-code for API and data integrations. |
| Featherless | A | 2023 | Serverless AI models. |
| Felt | A | 2021 | Geospatial maps data. |
| Fern | A | 2022 | Helper libraries and documentation for APIs. |
| Fidel API | B | 2012 | Payments infrastructure API. |
| Finch | B | 2020 | API for employment systems. |
| Fingerprint | C | 2019 | Device and user identity. |
| FireHydrant | acquired | 2018 | Alerting and incident response. |
| Firecrawl | A | 2024 | Web data for AI agents. |
| Firefly | A | 2021 | Infrastructure-as-code scanning. |
| Fireworks AI | D | 2022 | Large language model inference platform. |
| Fish Audio | seed | 2023 | AI text-to-speech and voice cloning. |
| Fivetran | D | 2012 | Data extraction, loading and transformation pipelines. |
| Flagsmith | bootstrapped | 2018 | Feature flags and remote configurations. |
| Fleet | A | 2020 | Open-source device management for IT and security teams. |
| Flightcontrol | pre-seed | 2021 | Platform-as-a-service on AWS. |
| FlutterFlow | A | 2020 | Low code UI builder. |
| Fly.io | C | 2016 | Edge-based application infrasturcture. |
| Foundational | seed | 2022 | Data management platform. |
| Freestyle | seed | 2024 | AI agents sandbox code execution. |
| Frigade | seed | 2022 | Assistants and components for apps. |
| FusionAuth | A | 2018 | Authentication and authorization service. |
| Galileo | B | 2021 | LLM evaluation and observability. |
| Galtea | seed | 2024 | Test generation for AI agents. |
| Gatsby | acquired | 2017 | React-based website and web app infrastructure. |
| Gel Data | A | 2019 | Open source PostgreSQL data tools. |
| Gentrace | A | 2023 | Generative AI quality and speed evaluation. |
| GitGuardian | C | 2017 | Code security. |
| GitHub | acquired | 2008 | Source control and deployment automation. |
| GitLab | Public | 2014 | Software development platform for teams. |
| Gladia | A | 2022 | Audio transcription and translation APIs. |
| GlareDB | seed | 2022 | SQL database for distributed data sources. |
| Google Cloud | Public | 1998 | Cloud computing and AI infrastructure. |
| Gradium | seed | 2025 | Voice AI platform. |
| Grafana Labs | D | 2014 | Operational dashboards for data. |
| Graphite | acquired | 2020 | Code review automation and workflow tooling. |
| Gremlin | B | 2016 | Enterprise chaos engineering platform. |
| Greptile | A | 2021 | Code review bot. |
| Gretel.ai | acquired | 2019 | Synthetic data creation. |
| Groundcover | B | 2021 | Cloud-native application monitoring. |
| GrowthBook | pre-seed | 2020 | Open source feature flags. |
| Guardrails AI | seed | 2023 | Custom validators for LLMs. |
| Gumloop | A | 2023 | Hosted LLM-powered automations. |
| Harness | E | 2016 | Software development platform for teams. |
| Harper | seed | 2017 | AI agent development stack. |
| HashiCorp | Public | 2012 | Open source cloud infrastructure for deployment and security. |
| Hasura | C | 2017 | Data platform for creating APIs. |
| Hatchet | pre-seed | 2023 | Distributed task queue. |
| Heap | acquired | 2013 | Digital analytics. |
| Helicone | pre-seed | 2023 | LLM application monitoring. |
| Hex | C | 2019 | Data analysis and visualization tools. |
| Highlight.io | acquired | 2020 | Open source infrastructure monitoring. |
| Honeycomb | D | 2016 | Observability and debugging. |
| Hookdeck | seed | 2020 | Reliable webhook infrastructure. |
| HoundDog.ai | seed | 2023 | Code scanner for sensitive data. |
| Hugging Face | D | 2016 | Create, discover and collaborate on machine learning models. |
| Humanitec | seed | 2017 | Self-service internal developer infrastructure. |
| Humanloop | seed | 2020 | Prompt evaluation and monitoring. |
| Hume | B | 2021 | AI toolkit for understanding human emotion. |
| ITOC360 | seed | 2018 | Incident operations orchestration. |
| Imply | D | 2015 | Database for analytics applications with Druid. |
| Incident.io | B | 2021 | On-call incident management. |
| Inference | seed | 2023 | Deploy, monitor, trace, train, and eval AI models. |
| Infisical | A | 2022 | Open source secret and configuration management. |
| InfluxData | E | 2012 | Creators of time series database InfluxDB. |
| Infracost | seed | 2020 | Cloud spending cost estimates. |
| Inigo | seed | 2021 | GraphQL management and security. |
| Inngest | seed | 2021 | TypeScript-based serverless functions. |
| Intercom | acquired | 2011 | Customer communications platform. |
| Ionic | A | 2012 | Cross-platform mobile SDK and builds. |
| JFrog | Public | 2008 | DevOps deployment tools. |
| Jam | A | 2020 | One click bug reports. |
| JetBrains | bootstrapped | 2000 | Software development tools. |
| Keploy | seed | 2022 | Open-source testing via API traffic. |
| Kestra | A | 2022 | Declarative data orchestration. |
| Kinde | seed | 2021 | Authentication-as-a-service. |
| Klu | pre-seed | 2022 | Large language model app platform. |
| Knock | A | 2021 | Notifications infrastructure. |
| Knot | A | 2019 | APIs for online financial accounts. |
| Kolide | acquired | 2016 | IT device security and compliance. |
| Komodor | B | 2020 | AI SRE. |
| Kong | E | 2017 | Platform for building and operating APIs. |
| Koyeb | acquired | 2020 | Quick deploy serverless platform. |
| LabelBox | D | 2018 | Data platform for building LLMs. |
| Lago | A | 2021 | Open source usage-based billing infrastructure. |
| Lakera | A | 2021 | Generative AI security. |
| Lambda | E | 2012 | On-demand GPU instances and clusters. |
| LanceDB | A | 2022 | Database for multimodal data. |
| LangChain | B | 2022 | Framework to build and operate LLM apps. |
| Langfuse | acquired | 2022 | Open source observability for large language models. |
| LaunchDarkly | D | 2014 | Feature and release management. |
| Liblab | A | 2022 | SDK generation for APIs. |
| LightSprint | pre-seed | 2026 | Cloud coding agents. |
| Lightdash | A | 2021 | Agentic business intelligence. |
| Lightning AI | B | 2019 | Cloud IDE for AI application development. |
| Linear | C | 2019 | Product development planning. |
| LiveKit | C | 2021 | Real-time video, audio and data APIs. |
| LllamaIndex | A | 2023 | LLM applications framework. |
| LocalStack | A | 2021 | Local AWS development environment. |
| LogRocket | B | 2016 | Performance monitoring, session playback and analytics. |
| LogicLoop | seed | 2021 | Alerts and notifications for data. |
| Logz.io | E | 2014 | Cloud observability platform. |
| Lokalise | B | 2017 | Continuous language translation for websites and mobile apps. |
| Lovable | A | 2023 | App creation and coding by prompting. |
| Luciq | B | 2014 | Mobile app testing. |
| Lumigo | acquired | 2018 | Microservices tracing and debugging. |
| Lunar.dev | seed | 2022 | API gateway. |
| Mapbox | E | 2011 | Location and mapping data. |
| Marqo | A | 2022 | Vector database and vector search engine API. |
| Membrane | seed | 2021 | Automated code integrations for software. |
| Memgraph | seed | 2016 | Optimized Neo4j-compatible graph database. |
| Merge | B | 2020 | HR, recruiting, and accounting API integration. |
| Mergify | pre-seed | 2018 | Faster and safer code merging for developers. |
| Metabase | B | 2014 | Open source analytics for company data. |
| Metaplane | acquired | 2019 | Data observability. |
| Metronome | acquired | 2020 | Usage-based billing API. |
| Mintlify | B | 2022 | Technical documentation. |
| Miradore | private equity | 2006 | Mobile Device Management for hardware. |
| Mistral AI | C | 2023 | Large language models. |
| Mixpanel | C | 2009 | Self-serve product analytics. |
| Modal | C | 2021 | Serverless AI model infrastructure. |
| Modem | seed | 2025 | AI teammate for product execution. |
| Modular | B | 2022 | Machine learning and AI infrastructure. |
| Moesif | acquired | 2017 | API analytics. |
| Momento | seed | 2021 | Real-time data infrastructure. |
| MongoDB | Public | 2007 | Open source NoSQL document database. |
| Monster API | pre-seed | 2023 | Fine-tuning and deployment for LLMs. |
| Moss | pre-seed | 2024 | Real-time semantic search for conversational AI. |
| Mostly AI | acquired | 2017 | Synthetic data. |
| Multiplayer | seed | 2023 | Software architecture documentation. |
| MutableAI | acquired | 2021 | AI code generation. |
| Mux | D | 2015 | Video streaming APIs. |
| Nango | pre-seed | 2022 | Platform for shipping code integrations. |
| Nanoclaw | seed | 2023 | Open source personal AI agent. |
| Nanonets | B | 2017 | Workflow automation. |
| Neo4j | F | 2007 | Graph database. |
| Neon | acquired | 2021 | Fully-managed PostgreSQL relational databases. |
| Neptune.ai | acquired | 2017 | MLOps for AI experiments. |
| Netlify | D | 2015 | Developer platform to build, deploy and host web apps. |
| NeuralTrust | A | 2022 | AI agent security. |
| New Relic | private equity | 2008 | Application monitoring & infrastructure observability. |
| Ngrok | A | 2015 | API-first ingress-as-a-service localhost tunneling. |
| Nhost | seed | 2018 | Open source serverless backend. |
| Northflank | A | 2019 | Deployment platform. |
| Not Diamond | seed | 2024 | LLM model router. |
| Nullstone | pre-seed | 2020 | Deployment automation. |
| Nx | A | 2016 | Build system for monorepos. |
| Nylas | C | 2014 | APIs for email, calendar and contacts providers. |
| Objective | acquired | 2021 | AI-native search-as-a-service. |
| Observe | acquired | 2017 | Infrastructure monitoring and observing. |
| Octen | seed | 2026 | Search infrastructure for AI agents. |
| Octopus Deploy | A | 2012 | Deployment automation and metrics. |
| Ollama | pre-seed | 2023 | Easily run open weights LLMs. |
| Ona | acquired | 2016 | Cloud dev environments for agents. |
| Onehouse | B | 2021 | Data lakehouse. |
| OpenAI | F | 2015 | Developing AI models, accessible through APIs. |
| OpenMeter | acquired | 2023 | Usage-based billing infrastructure. |
| OpenObserve | A | 2022 | Open source observability. |
| OpenPipe | seed | 2023 | Data capture, AI model training and deployment. |
| OpenRouter | B | 2023 | API for AI models. |
| OpenSauced | acquired | 2022 | Open source metrics. |
| Openlayer | A | 2021 | AI prompt and modeling alerting. |
| OpsMill | A | 2023 | Data management infrastructure. |
| Orb | acquired | 2021 | Usage-based billing infrastructure. |
| Orkes | B | 2020 | AI agent workflow orchestration. |
| Ory | A | 2019 | User authentication infrastructure-as-a-service. |
| Oso | A | 2018 | Distributed authorization service. |
| OurSky | seed | 2022 | Developer APIs for space data. |
| P0 Security | A | 2022 | Secure cloud access for developers and applications. |
| PagerDuty | Public | 2009 | Infrastructure incident management. |
| Pandium | seed | 2018 | Code integrations. |
| Paper | A | 2024 | Design canvas for human and agent teams. |
| Paper Compute Company | pre-seed | 2025 | Capture, inspect, and reuse AI agent sessions. |
| Parallel Web Systems | B | 2023 | Web search API. |
| Parea | pre-seed | 2023 | LLM test and evaluation. |
| PartyKit | seed | 2023 | Open source deployment platform for real-time applications. |
| Patronus AI | B | 2023 | Simulation data for model training. |
| PeerDB | acquired | 2023 | PostgreSQL replication. |
| Permit.io | A | 2020 | Authorization-as-a-service. |
| Persona | C | 2018 | Identity management and verification. |
| Pinecone | B | 2019 | Hosted vector database for AI search applications. |
| Pipedream | A | 2019 | Easier multi-API connection with code. |
| Pixeltable | seed | 2024 | Open source multimodal AI data platform. |
| Plaid | E | 2013 | APIs for financial transactions. |
| PlanetScale | C | 2018 | MySQL-compatible serverless database platform. |
| Ploomber | seed | 2021 | Cloud platform for data scientists. |
| Plushcap | bootstrapped | 2021 | Capture developer trends to drive product and marketing for dev tools. |
| Polar Signals | seed | 2020 | Infrastructure instrumentation and profiling. |
| PopSQL | A | 2017 | Collaborative SQL editor for teams. |
| Port | C | 2022 | Open source internal developer portal. |
| Portkey | A | 2023 | AI app gateway with observability. |
| PostHog | D | 2020 | Product analytics. |
| Postiz | boostrapped | 2024 | AI agents for social media scheduling. |
| Postman | D | 2014 | API platform for building and using APIs. |
| Postmark | C | 2003 | Email API. |
| Potpie | pre-seed | 2024 | Spec driven development for large codebases. |
| Predibase | acquired | 2020 | Fine-tune and serve LLMs. |
| Prefect | B | 2018 | Workflow orchestration for machine learning. |
| Prelude | A | 2023 | User trust signals and verification. |
| Prem AI | A | 2023 | Hosted AI models with privacy focus. |
| Preset | B | 2019 | Data analysis and visualization based on Apache Superset. |
| Prime Intellect | A | 2024 | AI agent development and deployment. |
| Prismatic | B | 2019 | Product code integrations. |
| Prismic | A | 2013 | Headless content management system (CMS) and tooling. |
| PromptLayer | seed | 2021 | Prompt engineering collaboration and evaluation. |
| Promptfoo | acquired | 2024 | LLM prompt evaluation and security. |
| PropelAuth | seed | 2021 | Authentication infrastructure-as-a-service. |
| Prowler | seed | 2023 | Open source cloud security. |
| PubNub | E | 2010 | In-app chat and communications. |
| Pulumi | C | 2017 | Open source infrastructure as code. |
| Pusher | acquired | 2010 | Communication and collaboration feature APIs. |
| Pybites | bootstrapped | 2016 | Learn to code in Python. |
| Pydantic | A | 2022 | Data validation and observability. |
| Pynt | seed | 2022 | API security testing. |
| Qase | A | 2019 | Test management platform. |
| Qdrant | B | 2021 | Vector database. |
| Qodo | B | 2022 | LLM-based code generation. |
| Qovery | seed | 2020 | Cloud infrastructure automation. |
| QuestDB | A | 2019 | Open source time series database. |
| Ragie | seed | 2024 | Managed retrieval augmented generation-as-a-service. |
| Railway | B | 2020 | Infrastructure-as-a-service for app deployments. |
| Rapid | acquired | 2015 | Web API gateway. |
| Rasepi | pre-seed | 2025 | Data verification for AI inputs. |
| Raven | seed | 2021 | Transactional message coordination. |
| Raycast | B | 2020 | Command bar. |
| ReadMe | A | 2014 | API documentation and community tools. |
| Red5 | seed | 2011 | Live video streaming via WebRTC. |
| Redis | G | 2011 | Key-value pair data store. |
| Redocly | seed | 2017 | Hosted API documentation. |
| Redpanda | D | 2019 | Data streaming platform. |
| Reducto | B | 2023 | Document parsing API. |
| Refuel | acquired | 2021 | Data enhancement with LLMs. |
| Render | C | 2018 | Cloud infrastructure. |
| Replay | A | 2021 | Web browser for reproducing bugs. |
| Replicate | acquired | 2019 | Platform for running and fine-tuning machine learning models. |
| Replicated | C | 2015 | Kubernetes application deployments. |
| Replit | D | 2016 | Collaborative coding and application hosting. |
| Rescale | D | 2011 | Computing infrastructure for engineering and R&D. |
| Resemble AI | A | 2018 | Voice cloning and detection. |
| Resend | A | 2023 | Email API for developers. |
| Restate | seed | 2023 | Workflows and services orchestration. |
| Retell AI | seed | 2023 | AI voice agents. |
| Retool | C | 2017 | Reusable components for internal enterprise web apps. |
| RevenueCat | C | 2017 | Subscription payment infrastructure. |
| Rig | acquired | 2023 | Application platform for Kubernetes. |
| Rill | seed | 2020 | Data dashboards. |
| Rime | A | 2022 | Conversational voice AI models. |
| Riza | pre-seed | 2023 | Isolated runtime for AI-generated apps. |
| Roboflow | B | 2020 | Computer vision as-a-service. |
| Rockset | acquired | 2016 | Real-time analytics database. |
| Rollbar | B | 2012 | Error monitoring and remediation. |
| RunPod | A | 2022 | GPU cloud infrastructure. |
| Runta | seed | 2025 | OS and network layer for AI agent governance. |
| SSOJet | bootstrapped | 2024 | Single sign-on integration. |
| SageOx | seed | 2026 | Human-in-the-loop agent orchestration. |
| Sampleapp.ai | pre-seed | 2024 | Custom API demos and sample apps. |
| Sanity | C | 2018 | Cloud hosting platform for content. |
| Sauce Labs | private equity | 2008 | Automated, continuous software testing. |
| ScyllaDB | C | 2013 | NoSQL distributed performance data store. |
| Seldon | B | 2014 | MLOps and machine learning platform. |
| Select Star | A | 2020 | Data discovery platform. |
| Semaphore | bootstrapped | 2009 | Continuous integration and delivery. |
| Sematic | seed | 2022 | Continuous machine learning platform. |
| Semgrep | D | 2017 | Code security tools. |
| Sentry | E | 2011 | Open source error tracking and observability. |
| Sequin | seed | 2020 | Messaging stream for API integrations. |
| Shoreline | acquired | 2019 | Observability aggregation and issue identification. |
| Sigma | E | 2014 | AI analytics and visualization. |
| SingleStore | F | 2011 | Distributed database with SQL queries. |
| Sleuth | A | 2019 | Continuous delivery metrics and control software. |
| Snowplow | B | 2012 | Data creation and common schemas. |
| Snyk | F | 2015 | Security analysis and vulnerability mitigation. |
| Socket | C | 2020 | Open source supply chain vulnerability scanning. |
| Soda | A | 2018 | Data quality platform. |
| Sonar | B | 2008 | Clean code tools. |
| Sourcegraph | D | 2013 | Source code search. |
| Spacelift | C | 2020 | Infrastructure-as-code management system. |
| Speakeasy | A | 2022 | SDK generation and API tools. |
| Speechmatics | B | 2006 | Speech-to-text APIs. |
| Split | acquired | 2015 | Feature flags and related experiments for software. |
| StackBlitz | B | 2017 | Browser-based collaborative editor. |
| StackHawk | B | 2019 | Application security testing. |
| Stacker | A | 2017 | Low code/no code business portals. |
| Stainless | A | 2021 | Web API SDK generators. |
| Starburst | D | 2017 | Data source connection and querying. |
| Statsig | C | 2021 | Product analytics and experimentation. |
| Steadybit | A | 2019 | Chaos engineering tools. |
| Stigg | A | 2021 | Monetization control infrastructure. |
| Stoplight | A | 2015 | Web API design and documentation. |
| Storyblok | C | 2017 | Headless content management system (CMS). |
| Strapi | A | 2016 | Open source headless content management system (CMS). |
| Stream | B | 2014 | Stream makes it easy to add chat and messaging to applications. |
| Stream.Security | B | 2020 | Cloud infrastructure security modeling and detection. |
| Streamkap | seed | 2022 | Real-time data pipelines. |
| Stripe | H | 2010 | Payment processing platform. |
| Stytch | B | 2020 | Authentication API. |
| Sublime Security | C | 2019 | Email security. |
| Supabase | F | 2020 | Open source Firebase alternative. Backend infrastructure. |
| SuperAGI | A | 2023 | Open source AI infrastructure. |
| SuperTokens | pre-seed | 2019 | Open source user authentication. |
| Superb AI | C | 2018 | Automated training data platform. |
| Superblocks | A | 2021 | Low-code platform for internal applications. |
| Supermaven | acquired | 2024 | Coding copilot. |
| Superset | seed | 2026 | IDE for orchestrating parallel AI coding agents. |
| Supersimple | pre-seed | 2021 | Self-service analytics dashboards for SaaS companies. |
| Surge AI | A | 2020 | Data labeling and reinforcement learning platform. |
| SurrealDB | A | 2021 | Database. |
| Svix | seed | 2021 | Webhooks as a service. |
| Swarmia | A | 2019 | Software development metrics. |
| Swimm | A | 2019 | Documentation creation tools. |
| Symbl.ai | A | 2018 | Real-time conversation intelligence infrastructure. |
| Sysdig | G | 2013 | Cloud security. |
| Tabnine | acquired | 2017 | AI code assistant. |
| Tailscale | C | 2019 | Zero configuration VPN. |
| Tavily | acquired | 2023 | AI agent web connections |
| Tecton | C | 2019 | Machine learning pipelines and deployment. |
| Tembo | A | 2022 | PostgreSQL developer platform. |
| Temporal | D | 2019 | Open source framework for building fault-tolerant applications. |
| Tessell | B | 2021 | Database platform-as-a-service. |
| TestMu AI | D | 2017 | Agents and software testing. |
| Tggl | bootstrapped | 2022 | Feature flags-as-a-service. |
| Tiger Data | C | 2015 | Open source time-series database. |
| TigerBeetle | A | 2022 | Database built for financial data. |
| TigerGraph | C | 2012 | Graph database. |
| TileDB | B | 2017 | Multimodal database. |
| Tines | C | 2018 | Workflow and process automation. |
| Tinybird | B | 2019 | Developer tools for building data products over analytical data. |
| Togai | acquired | 2022 | Usage-based billing infrastructure. |
| Together AI | C | 2022 | Cloud platform to train, fine-tune, and deploy AI models. |
| Traceforce | pre-seed | 2026 | Control of AI on company devices. |
| Trigger.dev | pre-seed | 2022 | Background jobs framework. |
| Turso | seed | 2021 | SQLite for production. |
| Twilio | Public | 2008 | APIs for communications. |
| Twingate | B | 2019 | Zero trust network access. |
| Tyk | B | 2015 | API gateway and security. |
| Unified.to | pre-seed | 2023 | API for building customer integrations. |
| Unify | seed | 2022 | LLM router. |
| Unleash | B | 2019 | Feature flags as a service. |
| Unsloth | pre-seed | 2023 | Fine-tune and train LLMs. |
| Unstructured | B | 2022 | Data extraction, transformation and loading for LLMs. |
| Upstash | A | 2021 | Serverless data platform. |
| Upsun | D | 2015 | Platform-as-a-service. |
| Userfront | seed | 2019 | Authorization and identity for SaaS. |
| Vantage | A | 2020 | Cloud cost optimization. |
| Vapi | B | 2021 | Build, test and deploy voice agents. |
| Vast.ai | seed | 2016 | GPU cloud marketplace. |
| Vectara | A | 2022 | RAG-as-a-service. |
| Vectorize | seed | 2023 | Transform unstructured data into vector indexes. |
| Velvet | acquired | 2023 | Store LLM data for analysis and optimization. |
| Venice | A | 2024 | Privacy-first AI model access. |
| Vercel | F | 2015 | Frontend development and deployment platform. |
| Vertesia | seed | 2024 | LLM application platform. |
| Vespa | A | 2023 | Open source text search engine. |
| Veza | acquired | 2020 | Authorization platform for data. |
| Video SDK | seed | 2020 | Real-time video infrastructure for web and mobile. |
| Vocode | seed | 2023 | Open source voice agents. |
| Voiceflow | B | 2019 | AI agent creation. |
| Vonage | acquired | 2001 | Communications APIs. |
| Voxel51 | B | 2016 | Dev tools for machine learning. |
| Voyage AI | acquired | 2023 | Embeddings and retrieval models. |
| Warp | B | 2020 | Faster terminal interface with autocomplete. |
| WarpStream | acquired | 2017 | Apache Kafka-compatible streaming platform. |
| Weaviate | B | 2019 | Open-source vector database. |
| Webflow | C | 2012 | Website generation. |
| WhyLabs | A | 2019 | Machine learning observability. |
| Windsurf | acquired | 2021 | Coding copilot and IDE. |
| WireMock | seed | 2011 | API mocking and testing. |
| WorkOS | B | 2019 | Enterprise features as a service. |
| Wundergraph | A | 2020 | API management for federated GraphQL. |
| XetHub | acquired | 2021 | Training data collaboration. |
| Yugabyte | C | 2016 | Open source distributed SQL database. |
| Zama | B | 2020 | Open source cryptography. |
| Zapier | bootstrapped | 2011 | No code automation platform for APIs. |
| Zed | B | 2021 | Open source code editor. |
| Zerops | seed | 2017 | Platform-as-a-service. |
| Zerve | seed | 2021 | Research and analytics data platform. |
| Zilliz | B | 2017 | Vector database. |
| dbt | D | 2016 | Data transformation. |
| deepset | B | 2018 | Applied data analytics via large language models. |
| dltHub | pre-seed | 2020 | Data load tool. |
| exe.dev | A | 2025 | Virtual machine-based computing infrastructure. |
| n8n | C | 2019 | Low-code workflows. |
| testRigor | seed | 2015 | Functional user interface regression and exploratory testing. |
| vFunction | A | 2017 | Tools to refactor monoliths into microservices. |