Open SWE is an open-source, asynchronous cloud-hosted coding agent designed to integrate seamlessly with GitHub repositories, functioning as an autonomous software engineer capable of handling complex tasks. Evolving from the AI autocomplete feature in software engineering, Open SWE acts like another team member by analyzing codebases, planning execution strategies, writing and reviewing code, and opening pull requests once tasks are complete. Its architecture includes a Manager, Planner, Programmer, and Reviewer, each working in tandem to ensure high-quality output. Open SWE operates in isolated sandboxes for security and runs asynchronously in the cloud to efficiently handle multiple tasks without taxing local resources. Designed for extensibility, the system is built on LangGraph, allowing developers to customize its functionality to their needs. Open SWE emphasizes UI/UX and interaction patterns, providing users with control and human-in-the-loop features, enabling feedback and adjustments during task execution. While optimized for complex tasks, the developers are working on a local CLI version to handle simpler tasks without the need for detailed planning and reviewing phases.