Series D Companies
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Series D Companies
| Company | Stage | Founded | Description |
|---|---|---|---|
| AI21 Labs | D | 2017 | Natural Language Processing tools. |
| Aiven | D | 2016 | Managed open source cloud data platform. |
| Algolia | D | 2012 | Search API as a service. |
| Alpaca | D | 2015 | Stock and crypto trading API. |
| Apollo | D | 2016 | GraphQL platform. |
| Astronomer | D | 2018 | Airflow data pipelines. |
| Chainguard | D | 2021 | Software supply chain security. |
| ClickHouse | D | 2021 | Column-oriented datastore. |
| dbt | D | 2016 | Data transformation. |
| Fal | D | 2021 | AI model fine-tuning and hosting. |
| Fireworks AI | D | 2022 | Large language model inference platform. |
| Fivetran | D | 2012 | Data extraction, loading and transformation pipelines. |
| Grafana Labs | D | 2014 | Operational dashboards for data. |
| Honeycomb | D | 2016 | Observability and debugging. |
| Hugging Face | D | 2016 | Create, discover and collaborate on machine learning models. |
| Imply | D | 2015 | Database for analytics applications with Druid. |
| LabelBox | D | 2018 | Data platform for building LLMs. |
| LaunchDarkly | D | 2014 | Feature and release management. |
| Mux | D | 2015 | Video streaming APIs. |
| Netlify | D | 2015 | Developer platform to build, deploy and host web apps. |
| PostHog | D | 2020 | Product analytics. |
| Postman | D | 2014 | API platform for building and using APIs. |
| Redpanda | D | 2019 | Data streaming platform. |
| Replit | D | 2016 | Collaborative coding and application hosting. |
| Rescale | D | 2011 | Computing infrastructure for engineering and R&D. |
| Semgrep | D | 2017 | Code security tools. |
| Sourcegraph | D | 2013 | Source code search. |
| Starburst | D | 2017 | Data source connection and querying. |
| Temporal | D | 2019 | Open source framework for building fault-tolerant applications. |
| TestMu AI | D | 2017 | Agents and software testing. |
| Upsun | D | 2015 | Platform-as-a-service. |