Top 4 C 65c02 Projects

vrEmu6502

3 32 6.9 C

6502/65C02 emulator library (C99)
AppleWin

6 22 9.5 C

Port of AppleWin Emulator with Native macOS UI (by sh95014)

Project mention: Apple II Emulation Evaluation (2022) | news.ycombinator.com | 2024-01-02

Check out Mariani, a port of AppleWin (Windows) for macOS and Linux. It's open-source, cycle accurate and emulates a fairly good number of devices: https://github.com/sh95014/AppleWin
The last version finally has a debugger. It lacks the killer feature of Virtual II though: the ability to mount a folder. This is gold for cross development.

InfluxDB

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acme

1 7 5.7 C

ACME 6502/65C02 Assembler (by visrealm)
vrEmu6522

1 3 6.6 C

6522 / 65C22 VIA emulation library

Project mention: picoclock - A Raspberry Pi Pico clock for the 6502 project | /r/beneater | 2023-12-06

visrealm/vrEmu6522: 6522 / 65C22 VIA emulation library (github.com)

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).