Narrow - Narrow helps you build a targeted audience and increase your influence on twitter.

Scrivener - Scrivener is a content-generation tool for composing and structuring documents.

Follow3rs - Follow3rs enables you to add more followers to your Twitter account and become prominent in no time at all.

Final Draft - Use your creative energy to focus on the content; let Final Draft take care of the style.

Followerion - Followerion is the most trusted site regarding how to get more followers on twitter.

yWriter - Free writing software designed by the author of the Hal Spacejock and Hal Junior series. yWriter6 helps you write a book by organising chapters, scenes, characters and locations in an easy-to-use interface.