Jotter is described as 'lightweight, no database, powerful web notebook that lets you create and manage notes online safely, quickly & easily' and is an app in the Office & Productivity category. There are more than 50 alternatives to Jotter for a variety of platforms, including Windows, Online / Web-based, Android, iPhone and Mac. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Google Keep. Other great apps like Jotter are Microsoft OneNote (Freemium), Evernote (Freemium), CherryTree (Free, Open Source) and NoteLedge (Paid).
Notebook PEAs - encryption of notes. Protects your private notes with a password. The text is never stored unencrypted on your disk (until you explicitly decide to do that). The used cryptographic primitives are currently considered as safe as possible.
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.