Some tools for writing online include PaperRater, Draft, FocusWriter and Keep Writing. These tools can help writers with such tasks as proofreading, collaborating, controlling versions of a document and staying on track with their writing tasks.
PaperRater is a free online tool that allows writers to paste or upload their writing for proofreading and suggestions to improve grammar, word choice and spelling. There's also an option for plagiarism detection, and the tool allows users to specify the type of writing.
Draft is an online tool writers can use to keep track of edits they make to their writing, make comments on their work and collaborate with others online. It also has transcription, cloud sync and publishing tools.
Both FocusWriter and Keep Writing are designed to help writers focus. While Focus Writer has a full-screen editor to prevent writers from being distracted, Keep Writing helps keep writers from constantly revising their work so that they can focus on getting their ideas out.