Open source alternatives to the AI coding tools
Most of this category is closed source, hosted, and priced per seat. Some of it started open and did not stay that way. These pages say what each tool is licensed under, why people go looking for something else, what Aura does instead, and what you lose by moving. Where another open-source project is the better answer, it is named.
Desktop apps and editors
The things you install and type in.
Open source alternative to Conductor
parallel Claude Code workspace for macOS
Conductor runs several Claude Code sessions side by side, each in its own Git worktree, so two agents can work on the same repository without stepping on each other.
Open source alternative to Superset
agent-era code editor for macOS
Superset is an editor built for the case where ten or a hundred agents are working at once, each in a worktree, and it handles that scale better than most things that call themselves editors.
Open source alternative to Cursor
AI-first code editor
Cursor is the most popular AI editor and its inline editing is still the best in the category.
Open source alternative to Windsurf
agentic IDE
Windsurf put the agent in the middle of the IDE rather than in a sidebar, and its long multi-file runs still hold together better than most.
Hosted services and tooling
Cloud agents, review platforms, the terminal.
Open source alternative to Devin
hosted autonomous software engineer
Devin runs on Cognition's infrastructure, takes a ticket, and works until it has a pull request.
Open source alternative to GitHub Copilot
completion, chat and a coding agent inside GitHub
Copilot is the default because it is already wired into GitHub: the completion is decent, the chat is fine, and the coding agent opens a pull request from an issue without you doing anything.
Open source alternative to Graphite
stacked pull requests and AI review
Graphite made stacked pull requests usable for teams that are not Meta, and its reviewer, Diamond, catches real bugs.
Open source alternative to Warp
agentic terminal
Warp rebuilt the terminal around blocks and put an agent inside it, and the result is faster to use than a plain shell for most people.
Keep the agents. Own the layer above them.
Aura is one Apache 2.0 monorepo: the desktop app, the CLI, the semantic engine and the editor extension. It reads what your agents changed at the AST level, checks it against the goal it was given, and keeps the reasoning attached to the commit.