Kanna – OSS Web UI for Claude Code and Codex with Embedded Terminals

Hey all thanks for checking out my first OSS PROJECT

Here's what makes Kanna special:

- One-click switch between Claude Code / Codex - Runs in your browser on localhost (no app switching) - Embedded split terminals, persisted between chats with a beautiful horizontal scrolling UX

Coming soon:

- End-to-end encryption + remote access via reverse proxy - Git integration, diffs, PRs - Remote / mobile support over tailscale

I wanted to replace switching between cursor, the github app, browser & (most recently) the codex app. The browser is hardest to recreate yet also the most flexible so it makes sense to build in the browser itself.

Install in 5 seconds: bun install -g kanna-code then just type: kanna

Kanna is purely a ui/ux layer. It uses your existing CLIs, is compliant & no data ever leaves your machine. If running claude or codex in your terminal works, kanna works too.

Kanna natively supports every tool call, model, reasoning effort, fast mode, plan mode, compaction, user questions, web searching, skills, agents, mcps, everything. There are a few libraries that do this but none that I found as comprehensive.

All feedback welcome!