Kinopio - Thinking canvas for mind mapping, brainstorming, and moodboards
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.
Kanboard - Kanboard is a free and open source Kanban project management software.
Wondershare PDFelement - All-in-one PDF editor
Excalidraw - Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.