Ghidra is a software reverse engineering (SRE) framework

Termux - a terminal emulator application for Android OS extendible by variety of packages.

a fast, scalable, multi-language and extensible build system

Free and open log management

An advanced theming manager designed to be used with RRO, OMS and Dynamic Overlays

Golo - a lightweight dynamic language for the JVM.

🐊 The historical, initial implementation of an ooc compiler in Java