WriteLaTeX – Online Collaborative LaTeX Editor With Integrated Rapid Preview
https://www.writelatex.com/

WriteLaTeX is a free service that lets you create, edit & share your scientific ideas easily online using LaTeX, a comprehensive & powerful tool for scientific writing. WriteLaTeX has grown rapidly since its launch in 2011, and today there are thousands of active users who’ve created over a hundred thousand projects. WriteLaTeX was founded by John Hammersley and John Lees-Miller, two mathematicians who worked together on the pioneering Ultra PRT Project and who were inspired by their own experiences in academia to create a better solution for collaborative scientific writing. Their aims include: a) Effortless Sharing – Every document you create has a secret link. Just send it to your co-authors, and they can review, comment and edit; b) Create Beautiful Documents Together– writeLaTeX synchronizes changes from all authors transparently, so everyone always has the latest version; c) Not Just Papers– Make amazing presentations with the beamer package! The preview helps with complicated tables, figures and graphs; d) Real-time Preview– writeLaTeX compiles your document in the background, so you can see the results right away – great for learning quickly; e) Find Errors Fast– writeLaTeX shows you errors & warnings as you go, so you can catch them early, and you don’t have to find them in the LaTeX log; and f) LaTeX in the Cloud– Edit online from anywhere and on any device – works great on your iPad! There’s no software to install, and no sign-up required. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.