What convenient services do you know for communication between IT developers based on blockchain technology?

Question

Communities

Tell me, are there any convenient services for communication between programmers / IT specialists based on blockchain technology (or without it)?
All any remotely similar options are suitable, including paid ones .

Answer 1

Ready at the moment could not be found.
But I managed to find a tool for implementation: https://www.hyperledger.org/

Answer 2

None, blockchain is useless. The only use is illegal transactions on the dark web, but we are on the Internet, so it is useless.