# proprietary file format

> format that is not a free and open format

**Wikidata**: [Q2720536](https://www.wikidata.org/wiki/Q2720536)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Proprietary_file_format)  
**Source**: https://4ort.xyz/entity/proprietary-file-format


## References

1. Freebase Data Dumps. 2013