Fidus Writer is described as 'online collaborative LaTeX editor especially made for academics who need to use citations and/or formulas' and is an website in the News & Books category. There are more than 50 alternatives to Fidus Writer, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and SaaS. The best alternative is LibreOffice - Writer, which is both free and Open Source. Other great sites and apps similar to Fidus Writer are Notion (Freemium), Google Docs (Free), Apache OpenOffice Writer (Free, Open Source) and Etherpad (Free, Open Source).
With so many tools, it's hard to keep everyone on the same page. Notion is a new tool that unifies them all. It's like Google Docs, but everything is organized and discoverable by your team. Real collaboration in real-time.
Etherpad is a highly customizable Open Source online editor providing collaborative editing in really real-time. Collaborating in really real-time No more sending your stuff back and forth via email, just set up a pad, share the link and start collaborating!
LyX is a document processor that encourages an approach to writing based on the structure of your documents (WYSIWYM) and not simply their appearance (WYSIWYG). LyX combines the power and flexibility of TeX/LaTeX with the ease of use of a GUI.
AbiWord is a free software word processor. The name "AbiWord" (pronounced "Abby Word") is derived from the root of the Spanish word "abierto", meaning "open". It runs on Linux, Mac OS X (PowerPC), ReactOS, BeOS (unsupported), AmigaOS 4.