It's pretty brand new, but, the community is pretty active developing various things now that it actually exists. One is BurnKoin which is essentially a decentralized mining pool where people can participate in block production without having to run a node themselves (yes I know not super exciting, but, it is up and running and was needed nontheless). Hive account@jga also just launched Fogata which is a different mining pool solution with a twist - it is the base infrastructure for some other projects he's planning to launch. There's Koiner which is basically a block explorer with some fancy features. There have been two NFT collections launched on Koinos so far (OG-Rex and Press Badges) but there isn't anywhere to trade them (yet). Both collections sold out within a day. I am currently building Kollection with a small team. It's a digital asset trading marketplace. Obviously the classic image NFT's is the first use case, but, there are some really cool use cases for NFT's that can't be done elsewhere on non-free chains like Ethereum.... but we need this base infrastructure first which is why I'm building it. The NFT marketplace is needed for some other types of businesses to be able to exist on Koinos. KAP is being built and is sort of like Ethereum's ENS domains (the .eth things you see all over twitter) but is a bit more than that as it's really a "smart wallet" solution. It brings account abstraction to Koinos so that user's can have wallets with Mana to perform transactions but not needing to worry about their keys. It also gives people human readable names. Games are the other big use case and there are at least two rumored in development but nothing officially announced. Koinos Group recently received 500k in seed funding from Blockchain Founders Group and @Splinterlands