Evernote
Freemium
Evernote is a note taking application which keeps the notes taken in sync across all platforms using its cloud infrastructure.
TiddlyWiki
Open Source
TiddlyWiki is an open-source single page application wiki in the form of a single HTML file that includes CSS, JavaScript, and the content.
Leanote
Open Source
Leanote is a self-hosted note taking app.
BeeCanvas
Free Personal
BeeCanvas is an online whiteboard based visual collaboration tool.
Notezilla
Commercial
Notezilla is a sticky notes app for Windows.
WizNote
Freemium
WizNote is a cross-platform cloud based note-taking client.
Zoho Notebook
Free Personal
Zoho Notebook takes the same catch-all approach as Evernote and OneNote, but has a few design ideas of its own.
Wiki on a Stick
Open Source
Wiki on a Stick is a wiki that lives in one self-modifying XHTML file.
Compare MyTetra with alternatives
Compare Zoho Notebook and MyTetra and decide which is most suitable for you.
Compare Wiki on a Stick and MyTetra and decide which is most suitable for you.