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Spectra vs Task Master: catalog facts
Spectra	Task Master
Free Free download for macOS and Windows.	Free Free to use; the AI model APIs it calls are billed by their providers.
Windows, macOS	Command line
Keeps specs and change history in structured files AI tools can read Scoped proposals with tasks and success criteria for each change	Turns a PRD into an ordered task list for agents Works as an MCP server in Cursor, Windsurf, Roo and others
No Linux build listed Useful mainly if you adopt the spec-driven workflow	Needs API access to an AI model Adds planning overhead that small tasks may not need
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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.