It makes sense to look for subject-specific repositories first, if they are already established in your discipline. If you have an affiliation with Ulm University, you are welcome to publish your data on the Open Access Repository of Ulm University and Ulm University of Applied Sciences (OPARU).

1. subject-specific repositories

individual conditions

In many disciplines there already are repositories where you can publish your datasets. When searching for a suitable RD repository in your own discipline, re3data.org can help.

https://re3data.org

2. institutional repositories

OPARU

for members and affiliates of Ulm University, free of charge

• max. 2 Gb/ file
• Readme file and metadata required
• Data freely accessible worldwide
• Data citable via DOI

Service description & more informations
https://oparu.uni-ulm.de
Contact: E-mail

Example software: DOI 10.18725/OPARU-12408
Example moving images: DOI 10.18725/OPARU-4516

3. cross-disciplinary repositories

Zenodo

for everyone, free of charge

• operated by CERN, funded by the European Commission
• up to 50 Gb per dataset free of charge (as of May 2018); larger datasets on request, possibly subject to a fee
• Own "communities" possible
• Data citable via DOI

https://zenodo.org

4. commercial data repositories

Another possibility are repositories of commercial providers. Here, however, many questions, e.g., those of long-term availability, are still unresolved.