Microsoft OneNote, GoodNotes, Notability, Flexcil, MyScript Nebo, Squid, OpenBoard Whiteboard, Xournal++, Bamboo Paper, Noteshelf, Butterfly, HandWrite Pro, Touchnotes, INKredible, Scrble, LectureNotes, MrWriter, WritePad, Saber: Handwritten Notes, NoteLab, ZoomNotes are some alternatives to CollaNote.