Tidebreak – open-source local-first AI coworker in Rust that turns your files into real spreadsheets, decks, and apps
Repo: https://github.com/brightwave-inc/tidebreak
Creator here. We spent three years building research agents for private equity at Brightwave, then rewrote the engine in Rust and open-sourced it as a desktop app (Apache-2.0).
The idea is that the deliverable is a file, not a chat response. You point it at your documents and folders, it works in a sandbox, and you get back a real .xlsx or .pptx with version history. It asks before overwriting anything you've touched, and everything it does is undoable.
Some highlights:
- Bring your own model: your ChatGPT subscription, an API key (Anthropic, OpenAI, Gemini, xAI, OpenRouter), or fully local through Ollama. Switch providers mid-chat.
- No account. Keys live in the OS credential store, everything stays on your disk.
- Packaged builds for macOS, Windows, and Linux, x86_64 and ARM64. Heads up that the Windows installer isn't Authenticode-signed yet, so SmartScreen will warn.
- Experimental code mode that drives coding agents you already use (Claude Code, Codex CLI, opencode, Grok CLI) in isolated git worktrees with per-turn diffs.
Website: https://tidebreak.io
Pre-1.0 and moving fast. Happy to answer anything, and would love to know what you think!