OpenMausBot

• Setting up a Chief of Staff bot that reads your inbox, calendar and Slack each weekday morning and sends one brief of what is waiting on you
• Running a sales follow-up bot that finds quiet deals in Gmail and HubSpot and drafts follow-ups that send only after you approve them
• Putting a Claude bot and a Codex bot in one channel to plan, build and review a small project together
• Giving a bot a cloud desktop to research competitors' pricing pages every Monday and write a short brief
• Drafting a reply automatically whenever an email arrives from a specific customer, with the trigger set up from one chat message
• Exporting a working team of bots as a Markdown file so a colleague can import the same setup

OpenMausBot is the most complete open-source take on the Grok Bot idea we have seen: named bots in a chat list, each with its own model, computer, apps and schedules, running on subscriptions you already pay for rather than a new seat. The Apache-2.0 core matters, because the closest alternative, OpenBot, is noncommercial-only. The breadth comes at a cost. The project is under three months old and changes almost daily, several of its best features lean on third-party accounts (Boat for cloud desktops, Composio for apps), and bots default to Full access, which is a risky default for software that runs shell commands and sends email. Lower the approval level, start with a cloud desktop or the local VM, and it is a strong, free way to run a small bot team; teams that need a stable, audited product should wait.

About OpenMausBot

OpenMausBot is an open-source project by Milind Soni and Omkar Satpute, published under the MausBot brand (the names and mascot are trademarks of Supamaus Software Private Limited). It was formerly called OpenGrokBot, and its repository was created on August 11, 2026, the day Grok Bot launched, as an open alternative to it. The app looks like a messaging client: the sidebar is a list of bots, each with its own personality, standing instructions, model, memory and conversation, and you can also put several bots in channels with shared instructions, a working folder and rules for who answers. The app does not ship a model. A small harness server on 127.0.0.1 runs the agent CLIs installed on your machine with your existing logins: Claude Code, Codex and Grok first, plus engines such as Google Gemini (through Antigravity), Cursor, OpenCode, Qwen Code, Droid, Kimi and Hermes, and API engines through OpenAI-compatible endpoints. Any other CLI that speaks the Agent Client Protocol can be added through config. Each bot can be given a computer: a cloud Linux desktop from Boat (a separate paid service with its own key in the free app), an isolated local VM, or your own machine on macOS and Windows, with Ubuntu Xorg in beta after explicit opt-in. Connected apps such as Gmail, Slack, GitHub and Notion come through Composio. Bots set up schedules, webhooks and app-event triggers from a sentence in chat, read replies aloud or take live voice calls, and surface shell commands, file edits and questions as approval cards. Teams can be exported and imported as one portable Markdown file, an MCP server lets Claude Desktop or Cursor direct the team, and a headless `openmausbot` CLI runs it from scripts or a server. Local data lives in `~/.openmausbot`, while prompts go to the model provider you chose. The free app works only while your computer is on; the paid Cloud plans ($15, $49 or $99 a month) give you a hosted always-on machine, included cloud-computer hours and voice, and team plans start at $169 a month. The tradeoffs are maturity and safety. The project is under three months old and ships near-daily 0.1.x releases, new bots start at Full access by default, the Windows installer is unsigned, Ubuntu is a beta, and phone companion apps are distributed through the project's Discord rather than app stores.