Haystack Search - Haystack helps you make the most of your time, by searching all your files and documents in the cloud in one place. It's been built for privacy from the ground up, so your data isn't stored on a server, just your computer.

Frysbe - Frysbe: Make global friends at random and the fling app comes up with features to send messages to strangers from every corner of the world to expand your social circle.

MailJack+ - Send PDFs as postal mail

Yochat - Yochat app enables users to get to know about strangers from a large number of countries from around the world by video chatting with them.

Paperkit - Create and download custom graph, lined, or dot grid paper

Anygram - Anygram app offers features that let you meet new people so you can make new foreign friends practice native languages to learn something new.