Directories / Alternatives / Claude Code

Open Source Alternatives

Open source alternatives to Claude Code

Open source alternatives to Claude Code, ranked by GitHub stars and freshness.

9 open-source alternatives in the index, ranked by GitHub stars and freshness.

M MCP Dev low

stippi/code-assistant

Various

An LLM-powered, autonomous coding assistant. Also offers an MCP and ACP mode.

★ 165 updated 1mo ago

open-source

Best for: Developers seeking an autonomous coding assistant with flexible integration options

M MCP Dev low

sim-xia/skill-cortex-server

Various

A third-party MCP server that enable all IDEs to access Claude Code Skills capabilities

★ 21 updated 5mo ago

open-source

Best for: Developers who want to use Claude Code Skills in IDEs that are not natively supported by the official tooling.

A Agents Coding one click

Aider

Paul Gauthier

Terminal-first AI pair programmer. Edits files in your repo, commits with sensible messages, runs your tests.

open-source

Best for: Engineers who live in the terminal and want a tight, scriptable AI loop

A Agents Coding one click

Cline

Open-source autonomous coding agent that lives inside VS Code. BYO model key, watch it work.

open-source

Best for: Engineers who want Cursor-class agent power without leaving stock VS Code

A Agents Coding low

Cursor Background Agent

Anysphere

Cloud-based async coding agent that clones your repo, works on a branch, and ships a PR while you keep coding.

freemium

Best for: Teams who want to parallelize coding work across isolated cloud environments

A Agents Coding one click

GitHub Copilot

GitHub / Microsoft

The original AI pair programmer, now with Agent Mode, Workspaces, and multi-model selection.

freemium

Best for: Large orgs already on GitHub Enterprise

A Agents Coding one click

OpenAI Codex (CLI + cloud agent)

OpenAI

OpenAI's coding agent surface: terminal CLI for local work, cloud agent for parallel autonomous tasks.

paid

Best for: Teams on the OpenAI Enterprise side of the fence

A Agents Coding high

OpenHands

All Hands AI

Open-source autonomous coding agent platform. Spins up a sandboxed dev environment, ships PRs end to end.

open-source

Best for: Teams who want a real autonomous coding agent and can run their own infra

A Agents Coding one click

Windsurf

Codeium

Codeium's IDE-with-an-agent. Cascade flow combines deep context with autonomous multi-file work.

freemium

Best for: Engineers who want continuous agent context, not chat-and-snippet