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Open-source keyboard firmware for Atmel AVR and Arm USB families

A Java 8+ Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)

A collection of modern/faster/saner alternatives to common unix commands.

Athens is no longer maintainted. Athens was an open-source, collaborative knowledge graph, backed by YC W21

Low Level ARM Machine Amulator - but really, a low-level emulator for the Nintendo 3DS. Main focus on its ARM9 security processor.

Java code comparison tool (jar / class)

A MapleStory2 Repacker