Kalam Labs - Twitch for Science
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
RunaWFE - RunaWFE Free is a free Open Source BPMS (business process management system), which serves to optimize and automate business processes (for Windows, Linux, Mac OS).
Wondershare PDFelement - All-in-one PDF editor
Littlecodr - Insanely fun card game that teaches kids the basics of code
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.