Nimbalyst
Nimbalyst suits developers and product people who already pay for Claude Code or Codex and want to see and steer several agent sessions at once, with diagrams, specs and mockups in the same window. It adds nothing on the model side, so anyone without an agent subscription, or happy in a terminal, gets little from it.
Pros
- MIT-licensed and free for individuals with no feature cap
- Diff review for every AI edit before it lands in a file
- Worktree isolation for parallel agent sessions
- Built-in editors for Markdown, CSV, Excalidraw, Mermaid and data models
Cons
- Depends on a third-party agent and its separate billing
- Teams pricing is announced but still in beta, so the paid tier is not settled
- Young product, first public code in late 2025