EmuNations

NanoBoyAdvance is a multiplatform Game Boy Advance emulator focusing on accuracy. It has been reported its CPU and timing emulation is more accurate than software emulators. It also has HQ audio mixer and quite a few other nice post-processing options (ghosting simulation, color correction, etc.)...

WinUAE is a highly accurate Commodore emulator for Windows covering A500, A500+, A600, A1000, A2000, A1200, CD32, CDTV, A3000, A3000T, A4000, A4000T and much more. It's packed with features for high DPI support, multiple Commodore accessories support, native CD and more!

Mesen is a multi-system emulator (NES, SNES, Game Boy and PC Engine) for Windows & Linux built in C++ and C#. It focuses on accuracy, though does incorporate graphic mappers and filters (i.e. HD packs in HDNes format as well). It also allows video recording...