C++ Insights is a clang-based tool which does a source to source transformation. Its goal is to make things visible, which normally and intentionally happen behind the scenes. It's about the magic the compiler does for us to make things work. Or looking through the classes of a compiler.

Decompiler Explorer is an interactive online decompiler which shows equivalent C-like output of decompiled programs from many popular decompilers.

Clothing with lots of pockets

Security camera view calculator. Ubiquiti.

Ubiquiti / Unifi gear, networking gear

Tests DMARC, SPF, and DKIM configuration

SBE

Flow diagram drawing. Makes it look hand-drawn.

Machine learning based system to mangle and play with the spelling of words.