C64 Forever vs Frodo

C64 Forever is a Windows package for preserving and emulating Commodore 8-bit software. It emulates C64 hardware and systems including PET, VIC-20, C16, Plus/4 and C128, with legal CBM system ROMs. A built-in catalog holds configuration data for more than 5,000 titles and receives online updates through the RetroPlatform Library. The package includes more than 200 games and demoscene productions with permission from their creators. RP9 combines a title into a single file for one-click playback, and the title editor can create or modify self-contained RP9 packages. Input options include USB and Xbox controllers, X-Arcade, I-PAC, customizable keyboard layouts, touchscreen gestures and an onscreen keyboard. The feature list also names clipboard, Windows File Explorer and Search integration. The free Express Edition is feature-limited. The downloadable Plus Edition costs 19.95 USD once and adds features including saved states, simultaneous playback windows and image building. Listed requirements include Windows 11, 10, 8, 7 or Vista, or equivalent Windows Server editions, on x86 or x64 systems.

Frodo is a free, portable Commodore 64 emulator for Linux, macOS, and Windows. It focuses on reproducing special graphical effects from the C64 and supports disk and tape software, many game cartridges, and formats including D64, G64, T64, TAP, X64, and LYNX. It offers a cycle-exact regular mode and Frodo Lite, a less compatible version intended to run better on slower machines. The official site lists V4.5, which adds Datasette TAP emulation and support for banked cartridges including Ocean, Fun Play, Power Play, Super Games, and Simons' BASIC. TAP emulation is unavailable in Frodo Lite. V4.5 can auto-start disk and tape images, cartridges, and C64 BASIC program files from the command line. Frodo can detect connected controllers for C64 joystick ports and map additional buttons to C64 keys. Display settings include windowed or fullscreen mode and an initial window size. The V4.5 snapshot format changed, so it cannot read snapshots from earlier versions. Frodo is listed under GPL-2.0.