Instabridge - Crowdsourced free wifi (now on Android)
Cold Turkey - Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!
Café Wifi Search 🔍 - Find great cafés to work from, worldwide.
Stay Focused - More suitable with Google Chrome, this service enables you ensure you do not waste precious time on updating Facebook status or chatting with people.
Get Free Fucking WiFi - Find the best fucking WiFi just around the corner.
Freedom.to - Freedom is a productivity hack that lets you block apps, websites or the entire Internet on iPhones, iPads, Windows and Mac computers.