OpenBitFun

What is OpenBitFun?

OpenBitFun is an open-source, customizable agent workspace for coding and general work, delivered as a desktop app with a Rust Agent Runtime. Its Agent Harness plans steps, manages context, calls tools and coordinates agents, and you pick one of four modes: Minimal for quick collaboration, Standard for everyday multi-step tasks, a multi-agent mode for complex work, and Creative for building Mini Apps. You can switch to another connected computer from the same app, or send instructions and approve requests from a phone or browser while tasks keep running on the selected host. Remote work is possible over SSH, through a jump host or inside a container. Specialist agents can be built with a chosen model and role, and tools connect through MCP, Skills and Hooks. Core code is under the MIT license and installers exist for Windows, macOS and Linux. The repository does not state a price for the app; the cost of the models you connect depends on your provider.

Use cases

• Run coding agents from a desktop app
• Split complex tasks across several agents
• Build custom Mini Apps with chat
• Control a remote computer from your phone
• Work on a server over SSH
• Create specialist agents with MCP tools

Who it's for

• Developers
• Power users
• Open-source contributors

Why use OpenBitFun

• Switching between lightweight and multi-agent modes lets you match effort to the size of the task.
• Running as a desktop app with a Rust runtime keeps the agent loop on your own computers.
• Remote control from a phone lets you check progress and answer approval requests without sitting at your main machine.
• Because the core is MIT-licensed, you can change the interface, tools and runtime to fit your work.

OpenBitFun features

• Rust agent runtime with a desktop application
• Four harness modes: Minimal, Standard, multi-agent and Creative
• Multi-agent coordination for demanding tasks
• Switch between connected computers in one app
• Phone or browser control with approval requests
• SSH workspaces, jump hosts and containers
• Mini Apps and a Mini App Marketplace
• MCP tools, Skills and Hooks for customization
• Persistent sessions with interruption recovery and long-term memory

OpenBitFun integrations

• MCP
• SSH
• Tauri

How to get started with OpenBitFun

1. Get the installer for Windows, macOS or Linux from the official BitFun download page and install it.
2. Configure a model and open a workspace.
3. Pick a mode, such as Minimal for quick tasks or the multi-agent mode for complex work, and describe the goal.
4. Review the agent's progress, approve requests, and give feedback to refine the result.
5. Optionally connect another computer or a phone through the Relay server and remote workspace options.

OpenBitFun limitations

• Version 1.0.0 does not share a data format with legacy 0.2.x releases; migrating needs the separate Data Tools
• Account sync and control across devices need a Relay server that you deploy
• The repository does not publish pricing or a list of supported models

OpenBitFun pricing

OpenBitFun is open source, so you can use and self-host it for free.

Prices can change and may vary by country or exclude tax. Check the official pricing page.

OpenBitFun alternatives

The main OpenBitFun alternatives listed on Debuly are OpenHands, goose, Cline, Claude Code, Orca and Qoder. The table compares pricing and platforms; order is A–Z.

1. 

   Claude Code

   Anthropic's coding agent that fixes bugs, writes tests and runs migrations from your terminal, IDE, desktop app, web or Slack.

   CodingAutomation and agentsDeveloper platforms
   PaidVisit Claude Code (official site)
2. 

   Cline

   Open-source AI coding agent for VS Code, JetBrains, the terminal and desktop that edits files and runs commands with your approval.

   CodingDeveloper platformsAutomation and agents
   Open sourceVisit Cline (official site)
3. 

   goose

   Open source AI agent that runs on your machine as a desktop app, CLI or API and connects to tools through MCP extensions.

   Automation and agentsCodingDeveloper platforms
   Open sourceVisit goose (official site)
4. 

   OpenHands

   Open-source AI coding agent platform with a free Agent Canvas, a Teams plan, and self-hosted Enterprise control

   CodingAutomation and agentsDeveloper platforms
   FreemiumVisit OpenHands (official site)
5. Or

   Orca

   Open-source agent development environment that runs Claude Code, Codex and other coding agents in parallel git worktrees.

   CodingAutomation and agentsDeveloper platforms
   Open sourceVisit Orca (official site)
6. 

   Qoder

   An agentic coding platform with a desktop app, IDE, JetBrains plugin, CLI and mobile app, sold on credit-based plans.

   CodingAutomation and agentsDeveloper platforms
   FreemiumVisit Qoder (official site)

OpenBitFun FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

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