GetBadges - GetBadges is a gamification platform which allows developers to play and compete while using software development tools.
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.
HabitScript - Gamify your coding time
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
Goals & Challenges by Fini - A social way to gamify goals and habits with challenges
Wondershare PDFelement - All-in-one PDF editor