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Emdash vs ThinkRail: catalog facts
Emdash	ThinkRail
Free Free and open source; the coding agents you connect may have their own costs.	Free Free and open source under the Apache-2.0 licence.
Windows, macOS, Linux	Windows, macOS, Linux
Runs several coding agents in parallel in isolated Git worktrees Works with many agents rather than locking you to one	Each workspace is an isolated git worktree with its own branch and terminals Concurrent agent chats alongside Monaco editor tabs and diffs
Needs separately installed and paid-for coding agents to do the actual work Young product that is still changing quickly	Built specifically for the pi coding agent macOS build is for Apple Silicon only and the Linux build targets Ubuntu 24.04 or later
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.