Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

Pure Writer - fast, smooth, fluid, at any time, never lose content, Markdown, super reliable

Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.

YourQuote - YourQuote is an interactive mobile app that helps you to write stories, quotes, screenplays, poems, and books.

Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.

JotterPad - JotterPad Writer for Android — Turn your thoughts into text. Go about your creative writing without distractions, write to your hearts content...