Smallpdf - PDF document management and conversion suite
Raspberry Pi - The Raspberry Pi is a tiny and affordable computer that you can use to learn programming through fun, practical projects. Join the global Raspberry Pi community.
iLovePDF - Free online PDF tool set
Orange Pi - It’s an open-source single-board computer. It can run Android 4.
Kingshiper Image Compressor - With Kingshiper Image Compressor, you can easily compress, optimize and reduce jpg, jpeg, png, svg and gif file to a smaller size in seconds.
Odroid - The Odroid is a series of single-board computers and tablet computers created by Hardkernel Co.