This is a web-based interface for running AI coding agents such as Claude Code, Cursor CLI and Codex, so you can view and use your coding sessions from a browser or phone. It is aimed at people who already use these coding assistants and want to work with them from different devices.
Has 3 of 6 · Phone app ✗
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.
Happy is a free desktop app for Mac, Windows and Linux that lets you run AI coding assistants from several companies in one place, using subscriptions you already pay for. It is aimed at people who write code or manage software projects and want to direct AI agents to do the work.
Has 4 of 6
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.
opcode is a desktop app that gives a visual window onto Claude Code, the command-line coding assistant from Anthropic. It is aimed at people who use Claude Code to write software and want a point-and-click way to manage sessions, agents, usage and settings.
Has 0 of 6 · Works with many coding agents ✗ +2
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does part of the job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.
OpenCode is an AI coding agent that runs in your terminal or as a desktop app, and it can work with many different AI models. It is for programmers who want an AI helper that reads and changes code in their projects.
Has 0 of 6 · Review changes before keeping ✗
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does part of the job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.
None of these match. Try another device.
Help me choose
I want to pick an open-source replacement for Claude Code desktop and web. Below is a list from Open Source Everything (CC BY-SA 4.0), in the order its website shows it. The order is a starting point, not a verdict.
- Claude Code UI: This is a web-based interface for running AI coding agents such as Claude Code, Cursor CLI and Codex, so you can view and use your coding sessions from a browser or phone. It is aimed at people who already use these coding assistants and want to work with them from different devices. [Advanced setup; runs on a server you set up; replaces fully; AGPL-3.0; https://github.com/siteboon/claudecodeui]
- Happy: Happy is a free desktop app for Mac, Windows and Linux that lets you run AI coding assistants from several companies in one place, using subscriptions you already pay for. It is aimed at people who write code or manage software projects and want to direct AI agents to do the work. [Easy setup; Mac · Android; replaces fully; MIT; https://github.com/slopus/happy-desktop]
- opcode: opcode is a desktop app that gives a visual window onto Claude Code, the command-line coding assistant from Anthropic. It is aimed at people who use Claude Code to write software and want a point-and-click way to manage sessions, agents, usage and settings. [Easy setup; Mac · Linux; replaces partly; AGPL-3.0; https://github.com/winfunc/opcode]
- OpenCode: OpenCode is an AI coding agent that runs in your terminal or as a desktop app, and it can work with many different AI models. It is for programmers who want an AI helper that reads and changes code in their projects. [Advanced setup; Windows · Mac · Linux; replaces partly; MIT; https://github.com/anomalyco/opencode]
Setup rating: "Easy setup" means you can install it like a normal app, use it in a browser. "Advanced setup" means you must run it on your own server or use the command line, or it is a tool for developers.
Full details: https://opensourceeverything.org/data/groups/agent-frontends.json
Before recommending anything, ask me these three questions (one at a time, in plain words): 1) Which device or devices will I use it on (Windows, Mac, Linux, Android, iPhone)? 2) How comfortable am I with technical setup: only installing apps from a store, happy to follow a step-by-step guide, or comfortable with servers and the command line? 3) What is my budget: free only, or willing to pay for hosting or support? Then recommend one to three projects from this list only, and for each say why, using how fully it replaces the app, its setup rating, and the devices it runs on. If nothing on the list fits me, say so plainly instead of stretching.
Before you build
Read the list of open-source projects at https://opensourceeverything.org/data/groups/agent-frontends.json. Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do.
My project or idea:
