Single-file header-only regex engine, C99/C++11

Java TLS PSK JSSE Socket Factories powered by Bouncy Castle

Implementation in Java for AES DUKPT, X9.24-3-2017

Bouncy Castle Java Distribution (Mirror)

The ASN.1 Compiler

AFGH Proxy Re-Encryption with RELIC (C library)

A cryptography library from NICS Lab

Transform encryption library for Scala

I2cKeypad - Arduino library for interfacing with I²C matrix style keypads

I2C keypad backpack board for keypads with up to 16 keys.

HID over I2C demonstration

Simple Dynamic Strings library for C

Advanced fault backtrace library for ARM Cortex-M series MCU | ARM Cortex-M 系列 MCU 错误追踪库

Catch Hard Faults on Cortex-M devices and save out a crash dump to be used by CrashDebug.

Mirror of memwatch : a memory leak detection tool.

Memory tracer, leaks hunter.

Embedded Backtrace and Stack Unwinder for ARM Cortex-M

An implementation of ByteBuffer in C

ARM Run-Time ABI for the Cortex-M0 processor

Wiki pages about Android internals

A Cursor filtering class for Android