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Open Source AI Coding Agents using Vitest

A curated collection of the best open source tools that take a task or issue and carry it to completion on their own: planning, editing files, running tests, and opening pull requests. using Vitest.

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AI
Minimal terminal coding agent you can fully customize
  • Stars

    Stars growing over the last 30 days117,590
  • Last commit

    5 hours ago
  • License

    MIT
Terminal-based coding agent with a minimal core, 15+ LLM providers, tree-structured session history, and a TypeScript extension system for building your own workflows.

Open Source Alternative to:

Autonomous coding agents that complete real engineering tasks
  • Stars

    91,738
  • Last commit

    9 hours ago
  • License

    MIT
AI agent platform that runs autonomous coding agents to plan, write, and ship changes across codebases end-to-end, with support for any model and self-hosted deployment.

Open Source Alternative to:

Open-source AI coding agent for your editor and terminal
  • Stars

    70,822
  • Last commit

    16 hours ago
  • License

    Apache-2.0
AI coding agent that runs inside VS Code and the terminal, supporting multi-file edits, bash execution, and any LLM provider via bring-your-own-key.

Open Source Alternative to:

General-purpose AI agent for code, workflows, and more
  • Stars

    55,640
  • Last commit

    4 hours ago
  • License

    Apache-2.0
Local AI agent with a desktop app, CLI, and API that connects to 15+ LLM providers and 70+ extensions for code, research, automation, and data tasks.

Open Source Alternative to:

Open-source coding agent for your IDE and terminal
  • Stars

    36,310
  • Last commit

    7 hours ago
  • License

    Apache-2.0
Runs source-controlled AI checks on every pull request, enforcing your engineering standards as native GitHub status checks with suggested fixes.

Open Source Alternative to:

AI coding agent for VS Code, JetBrains, CLI, and Cloud
  • Stars

    27,735
  • Last commit

    15 hours ago
  • License

    MIT
Open source AI coding agent with 500+ models, bring-your-own-key support, and specialized modes for writing, debugging, and planning code across IDEs and CLI.

Open Source Alternative to:

Open source AI coding agent for the terminal and IDE
  • Stars

    28,699
  • Last commit

    3 hours ago
  • License

    Apache-2.0
Terminal-based AI coding agent that reads your codebase, edits files and runs commands, with support for Qwen, OpenAI, Anthropic, Gemini and local models.

Open Source Alternative to:

AI coding agent that sees your live app and edits code
  • Stars

    719
  • Last commit

    8 hours ago
  • License

    Apache-2.0
Open-source AI coding agent that runs in your browser, sees your live DOM and app state, and makes real code edits from plain English descriptions.

Open Source Alternative to:

Self-hosted AI coding agent that opens real PRs
  • Stars

    Stars growing quickly over the last 30 days308
  • Last commit

    20 hours ago
  • License

    FCL-1.0
Source-available, self-hosted AI coding agent that connects to your repo, tools, and chat to investigate issues and open reviewable PRs on your own infrastructure.

Open Source Alternative to: