With the announcement of NEM's catapult yesterday, we should see more attention to the NEM blockchain.
http://mijin.io/en/1238.html
https://www.youtube.com/watch?v=Axza6fi3lFc

I'm sure there are more than I know, below are the three I'm aware of as of now.

Qchain.co (upcoming digital marketing, advertising, and analytics platform built on NEM and Ethereum blockchain technology)
The ICO is currently running.  7.5% bonus is ending in less than 12 hours.
www.qchain.co/crowdsale

They have a working demo app here https://beta-dev.qchain.co

Telegram Group @qchainplatform



Graft.network (global, open-source, blockchain-based, decentralized payment gateway and processing platform)
The ICO token is NEM's mosaic.  They would have their own blockchain eventually.  ICO starts January 18, 2018.
Telegram Group @GraftNet



Loyalcoin (customer loyalty-oriented digital asset)
https://loyalcoin.io/
Telegram Group https://t.me/LoyalCoin