The best open source alternative to taskpaper+ is Zim. If that doesn't suit you, our users have ranked nine alternatives to taskpaper+ and five of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to taskpaper+ are Org mode, MyTetra, MonoCorpus and Taskpad.
Zim brings the concept of a wiki to your desktop. Store information, link pages and edit with WYSISYG markup or directly typing some lightweight markup syntax and see it previewed as-you-type. Creating a new page is easy by either clicking on the "Create new note"...
Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system.
MyTetra is open source and cross platform personal manager for information accumulation. It is powerful program for data memorization and structuring notes.
Take notes, share them, learn and work faster. MonoCorpus helps teams keep track of code and notes during the development of software and machine learning algorithms.
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