ShareLaTeX is an online LaTeX editor which allows for real time collaboration editing LaTeX documents. It has a built-in chat, a version control and an export function (project/PDF).
The HZB operates its own ShareLaTeX-System. To use it only a supported web browser and access to the HZB-network is required. You may get access through the HZB UserApp.
The HZB ShareLaTeX-Service can be accessed here: