Openpixel is a customizable library for building web tracking pixels.

Cookie Manager for Firefox (Desktop/Android), Chrome. Supports viewing and editing of cookies and private cookies.

Code examples to follow along with http://brett.is/writing/about/third-party-tracking-pixels/

simple pixel tracking server

Tiny GPS tracker with LoraWAN

Modern, privacy-friendly, and detailed web analytics that works without cookies or JS.

LinkedIn enumeration tool to extract valid employee names from an organization through search engine scraping