Overleaf enables the collaborative editing of documents with LaTeX directly, without further software installations, via any web browser!
Templates in the template gallery make it easy to get started with LaTeX and all LaTeX features like inserting images, equations or bibliographies are supported by Overleaf.
Collaboration is done via only one master version for each document, which can be accessed by any authorized person.
Several people can work on a document at the same time, the changes of other people are displayed directly.
The document history also shows which changes were added or removed by whom. Furthermore, it is easy to return to previous versions.