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bwSync&Share is an online storage service, based on Nextcloud, that enables employees and students of universities in Baden-Württemberg to synchronise or exchange data between different computers, mobile devices and users (similarly to dropbox). Each user has a storage quota of 50GB, which can be extended if necessary.


Data can be accessed using the Nextcloud Client (from 01.01.2022 only using clients from version 3.3 onwards), which is available for Windows, Mac OS, Linux, Apple iOS and Android, as well as cross-platform using a web browser. In addition, a user can make his stored data accessible to other users by assigning the relevant access rights. You can download the client directly from the Nextcloud website or, on university computers that are managed with baramundi, you can install it directly from the baramundi kiosk. It is not recommended to download the client from the bwSync&Share website, as this is often not up-to-date.

The integration of OnlyOffice, an online editor similar to Google Docs, allows users to edit documents in the web interface without the need to install an Office suite on the device. In addition to synchronising and sharing files, it is also possible for multiple people to edit the files at the same time.

You can invite members of the participating universities (Shibboleth users), as well as all other e-mail addresses (external users).

Communication between users' devices and the infrastructure of Karlsruhe Institute for Technology (KIT) is encrypted. The data is stored unencrypted on the online storage systems of the KIT. Data access is limited to: 

  • the user who initially saved the data
  • other users who have been authorised to have access by the data owner.


User Guide

University computers managed with baramundi:

User guide for installing the Nextcloud Client from the baramundi kiosk (PDF in German)

Private computer:

Download the Nextcloud Client directly from Nextcloud's download centre

Instructions for the initial setup of the Nextcloud Client:

First steps with the Nextcloud Client (PDF in German)


Available from bwSync&Share


Please report any problems to the Service Desk.

The service systems normally run around the clock. During service hours (weekdays from 09.00 to 17.00) the response time is four hours. In general, KIT strives for the highest possible service availability. Planned service interruptions (e.g. for maintenance work) are announced in advance with a notice period of at least five days.

Data Backup / Hosting

This service is backed up for recovery purposes following a crash. A data backup in the form of a second copy is not performed.

Request Service

Registration is required before you can use the software.

Select your home organisation ("Reutlingen University/Hochschule Reutlingen") and log in using your university username and password.

Once you have registered, you can access the service here.

User Responsibilities

To use the bwSync&Share service, users must first register. The 'Regulations of Digital Information Processing and Communication (I&C) at the Karlsruhe Institute of Technology (KIT)' apply.


The regulations of the State Data Protection Act (LDSG) and valid area-specific data protection regulations (in particular TKG, TMG) must be observed.

The service can be used for the duration of your attachment to Reutlingen University.

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