Oasis was started by Renner, Walden & Newman. I don't know what the first version of it was, as I didn't see it until around 1985. At that time it was a bit of a novelty being written in all assembly language compared to Forem which most people ran in my area at the time. I think the last version they put out was Oasis 3.09. Glenda Stocks bought it from them around December 1987.according to her release. She renamed Oasis 3.09 to Oasis Jr and used it as the demo version. She then reorganized the code, breaking it into many separate modules, as well as enhancing the message prompt files to support more colour options, like C64 and Ansi. This really increased the overhead time for locating prompts and made the system noticeably slower than the original 3.09, due to the overhead of searching directories under SpartaDos.
Sometime in the early nineties (1993 ?) I purchased Oasis IV from Glenda. She no longer had the source code for the original 3.09, so all I got was the code for Oasis IV. I started developing what would have been Oasis V, but by then interest in the Atari was fading, and I was already involved with Galacticomm's MajorBBS and I stopped working on Oasis as it became clear that the web was overtaking the place of BBS systems. I was actually running the Puff BBS at the time.
I still have the letter of sale from Glenda here somewhere. I sold maybe 20 copies of Oasis IV after I took over from her. I still have the code, but I no longer have the complete set of master diskettes from which sold copies were made. At the time I was irate about not getting 3.09 which was what I had really wanted, as I considered version IV to be a travesty of what Oasis had been: fast, efficient software.