Coincide

Coincide is a free, open-source native Mac app by Apoorv Darshan that runs several coding agents at once in a single window. It drives each provider's own command-line tool with the sign-in or API key you already have, and it is a native AppKit port of T3 Code. The GitHub README lists the current release as v0.1.0 and describes the project as in early development.

What It Is

Coincide is a desktop workspace for coding agents: Claude Code, Codex, Cursor's command-line agent, Grok Build, OpenCode and Antigravity. Projects, threads, bots and chats from every agent share one sidebar, with a single model picker covering all installed and signed-in agents. Coincide says it never resells, proxies or meters tokens, and that it has no Coincide server or account.

Working With Agents

A thread can be handed to another agent mid-conversation. The next agent gets a recap of the turns it missed and continues in the same folder, and switching back resumes the earlier agent's own session. Plan mode lets an agent propose changes without touching files. Approval mode lets you confirm each command and edit, while full access lets agents run freely. A background agent host keeps turns running after you quit or update the app.

Code, Browser and Mac Control

Git support includes diffs, per-turn checkpoints, per-thread worktrees, commits, pushes and pull requests across GitHub, GitLab, Bitbucket, Azure DevOps and Forgejo/Codeberg. Each thread can have an integrated terminal and a WebKit browser that agents can read and operate. An optional Computer Use feature, off by default, lets agents operate other Mac apps. Appshots bring a window into a chat with both Command keys, and Keep Awake keeps a MacBook running long jobs.

Automation and Setup

Scheduled tasks send prompts on a schedule, including cron expressions, and bots are standing assistants with a personality and a job. A bundled coincide command-line tool can start threads, send messages and answer approvals from Terminal, scripts or another agent. It can be installed from a notarized DMG, Homebrew or npx coincide-dev, and requires macOS 26 or later on Apple silicon or Intel. The interface is available in 19 languages. Coincide Remote, an iPhone and iPad companion, is listed as coming soon, and Windows, Linux and Android versions are planned.