Manuskript is a tool for writers, with outliner, character management, plot development, etc.
Organize your thoughts and snippets in a hierarchical manner. Organize them as you wish, reorganize them on the go.
Get rid of all distraction while writing. Set personal goal in word count or time before you can leave editor.
Use the snowflake method to grow your single genius idea in an coherent whole, with complex characters, intricate plots and detailed universe.