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RustCast vs Monarch: catalog facts
RustCast	Monarch
Free Free and open source under the MIT licence, with optional GitHub sponsorship.	Free Free download; the fetched page does not describe paid plans.
macOS	macOS
Launcher, calculator, clipboard history and unit conversion behind one hotkey Runs custom shell scripts and aliases through modes	Calculator with dates, time zones, units and currencies Searchable clipboard history built in
macOS only Smaller plugin ecosystem than established launchers	No Intel Mac support yet Pre-1.0 software
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account 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 September 24, 2026

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