[BobMarin]

OpenTransactions is currency agnostic and doesn't use Bitcoin blockchain in way that I'm familiar with.

It's essentially a open source exchange mechanism based on anonymous federated servers.

I don't see how it's hard to find out about how these things work since literally every one of them has it's own wiki, blog and forum.

[zmguy]

It's not hard. It's time consuming. Scouring 9 different semi-curated resources to develop a clear and concise comparison of the 3 is quite a task, a task someone should take on if any of these technologies are to become mainstream. How would you summarize the differences between them?

[ninguem2]

If you are able to extract concrete, detailed information about these things from their wiki, blog and forum, congratulations. I can't. It all sounds pretty vague to me.

[zmguy]

This exactly. I think part of the problem is that each of these projects has a corporate backer, Monetas, sponsoring Open Transaction is building a business around the platform. There is some incentive to keep the best doco closed source. There is a slim to none chance that the only documentation Monetas is using is available publicly. I spent some time setting up an opentransactions server, but could never spend enough time/research to get a production server up.