Nextcloud server, similar to Polybox for D-INFK members and D-INFK students is running at https://cloud.inf.ethz.ch. Details can be found here. GitLab service for D-INFK members at https://gitlab.inf.ethz.ch can is mainly a version control system and can be used for collaboration. It incorporates a wiki and an issue tracker. Details can be found here. D-INFK Sharepoint site can also be used to work together on pages and office documents.