The name oftpd was chosen scientifically - I started with "aftpd", but another server already had that name. Likewise with "bftpd", "cftpd", and so on... "oftpd" was the first single-character ftpd name available.
I have since been informed that oftp stands for ODETTE File Transfer Protocol. I should have searched for "oftp" as well as "oftpd". No matter, the folks at http://www.oftp.net/ don't mind the name similarity.
0.3.7 is the latest of the "development" series, but I've been using the 0.3.6 version for a few years without any problems, so I recommend it. It is a security fix for a DoS bug found in 0.3.6. Details are in the ChangeLog
Please read the FAQ if you have questions.
You can also download earlier versions, but there's not really any reason to do so:
You can download Mauro Tortonesi's IPv6 patch from here:
You can see his other IPv6 patches on
Use this against the 0.2.0 release. It is more likely to work than the current 0.3.x code if you need IPv6 support!