Iodine - iodine is a free (ISC licensed) tunnel application to forward IPv4 traffic through DNS servers (IP over DNS). Works on Linux, FreeBSD, NetBSD, OpenBSD and Mac OS X.

Mockup Generator - Create attractive product screenshots with just a few clicks

Swarm - Swarm lets you earn prizes and compete with friends based on the places you go.

Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.

Tooyoo Emergency Sheet - Free & secure, emergency medical information sharing

shotsnapp - Create beautiful device mockup presentation