Instabridge - Crowdsourced free wifi (now on Android)
Gyroscope - Gyroscope is a personalized dashboard for tracking your life.
Café Wifi Search 🔍 - Find great cafés to work from, worldwide.
CareKit by Apple - Open source software framework for creating health apps
Get Free Fucking WiFi - Find the best fucking WiFi just around the corner.
DNScapy - DNScapy is a DNS tunneling tool. The code is very light and written in Python.