- Factom, wanting to offer a decentralized platform for notaries.
If you mean this (
https://www.factomprotocol.org), looks like they have their own blockchain (according to
https://www.factomprotocol.org/protocol)
- Golem, whose stated goal is to become a kind of Airbnb of computing power. The platform lets users sharing some computing power and is based on the Ethereum platform.
I can't find reliable source about this token/coin.
- Basic Attention Token, which aims to revolutionize the world of digital advertising with an innovative model that benefits advertisers, publishers, and users.
It has real life usage, but have many controversy. Since BAT also aim to solve privacy problem, IMO AdBlock and donation system are more practical.
-
Siacoin, offering a fully decentralized cloud storage platform.
I checked Siacoin, they seem to already release
their platform and people are using it.
Siacoin is coin and have it's own blockchain (according to
https://sia.tech/technology)