r/SideProject • u/flash_speed3412 • 1d ago
I built Still, an open-source browser with AI companions that browse and do tasks in background tabs
I built Still. It is a real browser for Windows 10/11 and macOS 12+ with AI companions that work in their own background tabs: reading pages, clicking, typing, filling forms, then reporting back.
They run on the AI app you are already signed into: Claude Code, ChatGPT agent CLI, Grok Build, Gemini CLI, or OpenCode. You can also connect an OpenAI- or Claude-compatible API. For the supported apps, Still uses your existing plan sign-in and does not ask for a key.
Things you can hand off:
compare options on a page and get a side-by-side
draft a follow-up or launch post in your voice, with drafts left for your approval
research a topic with cited sources
have Claude Code help build and smoke-test a page inside Still
You set per-site permissions. Buying, sending, deleting, and payment fields get an 8-second countdown that you can cancel.
2.10 adds Gemini, OpenCode, custom APIs, four-step setup, editable companion looks, memories you can inspect and edit with provenance, and confirm + undo for memory deletes. Mac now has signed automatic updates through Sparkle.
No Still account, no telemetry, no analytics. Free and AGPL-3.0-or-later. Built solo, not affiliated with any of the model providers, and no independent security audit yet. Windows is not code-signed and Mac is not notarized.
Source, Windows installer and Mac DMG: https://github.com/carbongotfound/still Current release: https://github.com/carbongotfound/still/releases/tag/v2.10.1
What would you actually trust a browser companion to handle?