
Tempest - A 64% More Token-Efficient Open-Source Alternative to Conductor.build for Windows, macOS & Linux
I've been working on Tempest for the past few weeks, an open-source desktop application for AI-assisted software engineering.
The goal from day one has been simple. To make agentic coding more efficient.
Instead of only relying on larger context windows, Tempest helps AI agents understand repositories more effectively using a local code graph. In our benchmarks, this reduced token usage by 64%, allowing agents to spend fewer tokens finding context and more on solving the actual problem.
Tempest also lets you run multiple AI coding agents from one interface, including:
- Claude Code
- Codex
- Gemini CLI
- GitHub Copilot CLI
- Cursor Agent
- Cline
- Goose
- OpenCode
Each agent runs in its own isolated environment. Beyond separate Git worktrees, Tempest provides OS-native process isolation using Bubblewrap on Linux, Seatbelt on macOS, and a custom isolation layer on Windows, allowing agents to execute commands safely in parallel without interfering with one another.
Everything runs locally, there's no vendor lock-in, and the project is completely open source.
We're also using Tempest to build Tempest, so every new feature is tested in the same multi-agent workflow we're building for everyone else.
I'd love to hear what you think. If you use AI coding tools regularly, what features would you want from an open-source alternative to Conductor[.]build?
Website:
https://tempestai.dev