Coworker: free open-source desktop AI coworker app

Melvin Vivas · X post · 2026-09-26 · Open on X

Topics: AI Dev Tools & Productivity, AI Agents, Tool Use & MCP · Level: beginner

Summary

The creator introduces Coworker, a free, open-source desktop app he built. He describes it as a simpler version of Grok Bot and Hermes that works with both local and cloud models, and says it installs easily on Mac, Windows and Linux.

Key points

• Coworker is a local-first AI coworker desktop app built by the creator.
• It supports both local and cloud models.
• It runs on macOS, Windows and Linux.
• It is free and open-source.
• He positions it as a simpler alternative to Grok Bot and Hermes.

Resources mentioned

• Coworker (donvito/coworker) · repo · github.com · free
  The creator's local-first desktop app where you pick an AI coworker and have it produce work such as invoices as finished PDFs.
  Also in: Claude Opus 5.5 for Video Making: Creator's Showcase Thread (Coworker) (Melvin Vivas on X · notes), Coworker: Open-Source Desktop App for AI Agents (Melvin Vivas on X · notes), Using Devin AI to Test the Coworker Desktop App on Windows (Melvin Vivas on X · notes), Intent Classification and Routing in a Multi-Agent Desktop App (Melvin Vivas on X · notes) and 38 more
• Grok Bot · tool · x.ai · paid
  An early-beta AI agent product from the Grok family that runs in its own computer and browser instance and does tasks in your tools.
  Also in: An agent bot that installs and drives Codex on its own (Melvin Vivas on X · notes), Asking a Coder bot to install Codex (Melvin Vivas on X · notes), Using an ML agent to train an open-source TTS model on your voice (Melvin Vivas on X · notes), Organizing Grok Bot Lead Collection in One Google Sheet (Melvin Vivas on X · notes) and 14 more
• Hermes · tool · hermes-agent.nousresearch.com · free
  The AI agent the creator uses to automate making explainer videos. It is probably Nous Research's Hermes Agent, but the post does not say so.
  Also in: OpenAI DevDay recap: Dots, GPT-6.1 Sol, Codex Cloud, Agents API (Melvin Vivas on X · notes), Agent Monitor: see traces, tokens and costs of your coding agents (Melvin Vivas on X · notes), Coworker: An Open-Source Desktop Agent App for Local and Cloud Models (Melvin Vivas on X · notes), jsonl-viewer: Inspect Coding Agent Traces (Codex, Claude Code, Pi, Hermes) (Melvin Vivas on X · notes) and 13 more

Try this

• Download and install Coworker on Mac, Windows or Linux.