Do
- Bitcache (https://en.wikipedia.org/wiki/Bitcache) - in development
- Namecoin (https://en.wikipedia.org/wiki/Namecoin)
- Steemit (https://en.wikipedia.org/wiki/Steemit)
- Synereo (https://en.wikipedia.org/wiki/Synereo)
count? I know, formally these can be considered as a cryptocurrencies, but I would not consider this as the central purpose of existence.