TopNotes is described as 'powerful app for handwriting and organizing notes, sketches, diagrams, illusions and drawings. It is the easiest-to-use and going to be the best-selling handwriting app for iPad' and is an app in the Office & Productivity category. There are more than 50 alternatives to TopNotes for a variety of platforms, including Windows, Android, iPhone, iPad and Online / Web-based. The best alternative is Joplin, which is both free and Open Source. Other great apps like TopNotes are Standard Notes (Freemium, Open Source), Evernote (Freemium), CherryTree (Free, Open Source) and Cryptee (Freemium, Open Source).
This program is a structured notetaking application based on GTK+ 3. Write your notes in instantly-formatted Markdown, organise them in a tree of folders that can be instantly navigated from within the program, and add hand-drawn notes by mouse, touchscreen or digitiser.
MixNote is a mobile note taking app, like a memo pad or notepad. Take note of every deserved thing, with text, ToDo, voice and picture. You can take notes, write memos, create to-do list, record voice and add pictures in MixNote. Make your notes more varied and interesting.