WiFi Map - A crowdsourced list of routers and passwords
Wi-Fi Widget - See, test, and share your wifi without unlocking your iPhone
Get Free Fucking WiFi - Find the best fucking WiFi just around the corner.
yFi - macOS utility app to monitor your WiFi connection.
Instabridge - Crowdsourced free wifi (now on Android)
Waflee - Provides an effortless way to connect to your Wi-Fi