Overleaf v2 offers an impressive collection of new and upgraded collaboration features. The collaborative editing is faster and smoother than in Overleaf v1, and it shows you where your collaborators cursors are as they type. The new track changes mode lets you see exactly what has been changed by your collaborators, and allows you to accept or reject each individual change. You can also comment on ranges of text in your document for precise communication.
Overleaf Blog, https://www.overleaf.com/blog/641-try-out-overleaf-v2
Caltech Library now provides free Overleaf Pro accounts for all students, faculty and staff who would like to use a collaborative, online LaTeX editor for their projects. Claim your free 10GB Pro account on Overleaf by signing up at https://www.overleaf.com/edu/caltech. You’ll need to verify a Caltech email address in order to receive your free Pro account.
Overleaf is designed to make the process of writing, editing and producing your research papers and project reports much quicker for both you and your collaborators. Overleaf can also be linked to other services such as arXiv, Git and Plot.ly to best fit into your workflow.
Some of the of features that Overleaf/WriteLaTeX includes: