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Nestopia (Richard Bannister) vs Nestopia UE: catalog facts
Nestopia (Richard Bannister)	Nestopia UE
Free Free download; the optional Emulator Enhancer add-on is shareware.	Free Free and open source under the GPL.
macOS	Windows
Cycle-exact NES emulation for timing-sensitive games Supports 201 mappers and the Famicom Disk System	Based on the well-known Nestopia core Includes a game database and palettes
Gamepad and full screen support require the paid Emulator Enhancer add-on macOS only	This repository covers only the legacy Win32 build New GUI development has moved to the Jolly Good Emulation project
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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