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Stella vs OpenEmu: catalog facts
Stella	OpenEmu
Free Free and open source under the GPL.	Free The open-source application is available without a license fee.
Windows, macOS, Linux	macOS
Extremely broad cartridge and peripheral coverage Built-in debugger and accurate TV display effects	Native Mac library interface with artwork and metadata handled for you One controller configuration applies across every emulated system
Single-system emulator The 2600's own quirks mean some games still need per-game settings	macOS only Core updates depend on the OpenEmu team packaging them
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	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 September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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