StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
WiFi Map - A crowdsourced list of routers and passwords
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Café Wifi Search 🔍 - Find great cafés to work from, worldwide.
UptimeRobot - Free Website Uptime Monitoring
Instabridge - Crowdsourced free wifi (now on Android)