Athas

Athas is a lightweight, open-source code editor that runs on macOS, Windows, and Linux and combines a code editor, integrated terminal, Git controls, GitHub access, and AI coding agents in a single window. Released under the AGPL-3.0 license with development happening in public, Athas is positioned as a minimalist alternative to heavier AI-powered editors such as Cursor and is designed to run a user's existing CLI agent natively rather than replace it.

Open Source Alternative to: Last 30 days Last commit Repository age Version Repository Athas is a lightweight, open-source code editor built around the idea that your editor, your AI coding agents https://openalternative.co/categories/developer-tools/ai-assisted-coding/ai-coding-agents , and your Git workflow belong in one place. It runs on macOS, Windows, and Linux, and keeps the interface fast and focused rather than loading it with features you won't use. The core pitch is simplicity without sacrifice. You get a code editor, an integrated terminal, Git controls, and GitHub access, all in a single window. Agents sit beside the code they're changing, so you can review diffs in context rather than switching between tools. What's included: Compared to heavier AI-powered editors https://openalternative.co/categories/developer-tools/ides-code-editors/ai-powered-editors like Cursor https://openalternative.co/alternatives/cursor , Athas leans into minimalism. It's not trying to be an IDE with every feature bolted on; it's a focused workspace that stays out of your way. The AGPL-3.0 license means the code is fully open, and development happens in public. If you already have a preferred CLI agent, Athas is designed to run it natively rather than replace it. Every Sunday we deconstruct one proprietary app and pick the best open source alternatives worth switching to. Stars License Compare with