Overleaf Community Edition (still familiar to many as "ShareLaTeX") is an open-source, collaborative online LaTeX editor.
It has a complete, pre-built LaTeX environment running on RHRZ's servers.
Work together on a single version. Overleaf CE provides the same LaTeX environment wherever you and your colleagues are.
Almost all features of LaTeX, such as inserting images, bibliographies, equations are supported.
To use ShareLaTeX/ Overleaf CE on the RHRZ servers, registration for the Overleaf Community Edition is required. To do so, select the "Register" button and identify yourself with your rhrk account to create your Overleaf CE account.
This service is provided by RHRZ without support or availability guarantee.