Open Source Alternatives
Open source alternatives to Aider
Open source alternatives to Aider, ranked by GitHub stars and freshness.
10 open-source alternatives in the index, ranked by GitHub stars and freshness.
stippi/code-assistant
Various
An LLM-powered, autonomous coding assistant. Also offers an MCP and ACP mode.
Best for: Developers seeking an autonomous coding assistant with flexible integration options
Claude Code
Anthropic
Anthropic's terminal-native coding agent. Reads your repo, edits files, runs tests, ships PRs.
Best for: Senior engineers who want a real terminal agent, not just autocomplete
Continue
Continue.dev
Open-source AI code assistant for VS Code and JetBrains. Customisable, BYO model, built for enterprise.
Best for: Teams that need control over models, prompts, and data residency
Cursor
Anysphere
The AI-first code editor. Tab to autocomplete, Composer to multi-file refactor, Agents for the long-running stuff.
Best for: Teams who want IDE polish and agent power in one tool
Devin
Cognition Labs
The autonomous software engineer. Plan, write, test, and ship in a sandboxed cloud workstation.
Best for: Teams ready to give a junior engineer-equivalent a ticket and walk away
GitHub Copilot
GitHub / Microsoft
The original AI pair programmer, now with Agent Mode, Workspaces, and multi-model selection.
Best for: Large orgs already on GitHub Enterprise
OpenAI Codex (CLI + cloud agent)
OpenAI
OpenAI's coding agent surface: terminal CLI for local work, cloud agent for parallel autonomous tasks.
Best for: Teams on the OpenAI Enterprise side of the fence
Windsurf
Codeium
Codeium's IDE-with-an-agent. Cascade flow combines deep context with autonomous multi-file work.
Best for: Engineers who want continuous agent context, not chat-and-snippet
Interview: Sweep founders share learnings from building an AI coding assistant
Community
We asked the Sweep founders for their view on the current agents
Best for: Developers and founders building or evaluating AI coding assistants and autonomous agents
Kilo
Various
Kilo is the open source AI coding agent for VS Code, JetBrains, CLI, and Cloud. Access 500+ models, bring your own keys at zero markup, and keep code private with local models.
Best for: Developers who want a private, flexible AI coding agent across editors and CLI