Nimbalyst is an open source desktop app for running Claude Code, Codex, and other coding agents side by side, with every session and every change in front of you.
Start sessions in parallel, each in its own git worktree, and watch them work without switching between terminal tabs.
Changes land in a side by side review pane. Approve what you want, reject the rest, before anything reaches your branch.
Markdown docs, mockups, diagrams, and a built in tracker live next to the sessions that act on them.
Nimbalyst sends its outbound email from getnimbalyst.com so that support and account mail on nimbalyst.com stays separate. Mail from here is written by Karl Wirth, who builds Nimbalyst at Stravu.
Reply to that email to opt out and you will not hear from us again. You can also mail [email protected] at any time.