When I first heard of Hashgraph, I liked the technical side or using gossip to facilitate more efficient voting. However, it is not open source. I do not know much about tangle.

Ultimately the market will choose the winner, and it will likely be a spinoff of a decentralized ledger. However there are a lot of issues with blockchain efficiency that these competitors are trying to solve.

I wonder if the market will care about the open source nature. Maybe we just want something that works.

Take Steemit for example, while the database is decentralized, this platform is very must run off a central bank of servers (unless I am missing something). --3D