Cydonia vs MonoCode
Both are MIT-licensed desktop apps that run Claude Code, Codex, Cursor, OpenCode and pi in tabs and panes. MonoCode is a Tauri app with worktrees, an editor and diff review; Cydonia speaks ACP and keeps articles and boards in the project.
Checked against each product's own site on
MonoCode calls itself a GUI for your coding agents: every tab a session, panes side by side, a git worktree per parallel task. Cydonia runs agents the same way, in tabs and panes, and gives them articles and boards that stay in the project after the session ends.
| Cydonia | MonoCode | |
|---|---|---|
| License | MIT | MIT |
| Platforms | macOS, Linux, Windows | macOS, Linux, Windows |
| Built with | Rust and GPUI | Tauri: a Rust backend and a TypeScript frontend |
| Agents | Any agent in the ACP registry, or a command of your own | Claude Code, Codex, Cursor, Grok Build, OpenCode, Antigravity, Pi, omp, fx, Hermes Agent, Devin, installed and signed in already |
| ACP | Yes | No |
| Files and diffs | Files and a review of git changes in the right panel | A file editor and diff review |
| Documents and boards | Articles, boards and tables in .cydonia/ in the project |
Notes an agent keeps through /operator; no boards |
When to pick MonoCode
- You want an agent to drive the app itself, through
/operator, or agents that work across projects with memory and scheduled tasks.
When to pick Cydonia
- You want work handed to agents from a board: a card or a whole column goes to a session.
- You want what agents find kept as articles in the project, which every agent reads and writes through MCP.
- You want any agent that speaks ACP, not a list of supported CLIs.