Hey, people, look at what I just found: https://www.fair-contracts.com/.

This is made on Nebulas platform. Here is what the creator himself writes about it: "When working remotely on a contract, developers often do not get paid after finishing the workload. This project aims to solve this issue by ensuring that money for the contractors are stored safely in the blockchain while they are developing the application. After project hits some milestone, part of the payment is automatically sent to the contractor (after business confirms that work was finished)."

I personally didnt try to use it, but UI seems very nice and smooth. And it is actually impressive. People are already working on implementation all these cool ideas in real life. Kudos to the creator! Really looking forward to see more and more of this stuff in the future!