Maybe "stepchildren" might be a better moniker. We are coming up on the first anniversary of WotC's attempt to murder the OGL 1.0. This sent many publishers (myself included) on various paths of re-discovery on what to do about it. Some looked for new licenses. Others stuck with the OGL 1.0 to show it can't be removed.
Myself? Well, it knocked the wind out of my sails, to be honest, and I have spent the better part of 2023 figuring out where I want to go next. But while I am over here contemplating the various Gods, others have moved on. So here are a couple of recent purchases that embrace the two paths of the OGL.
Pathfinder and OSRIC
Undoubtedly two of the biggest success stories of the OGL and 3e era has been Pathfinder and OSRIC. Both gambled on the OGL and spent a long time enjoying the fruits of that gamble.
OSRIC of course used it to go back to "1st Edition style" play and Pathfinder to extend and enhance their own flavor of "3rd Edition style" play.
The OSRIC Players Book covers everything the Player needs to know. It is a great resource and a good replacement for your Player's Handbooks and Unearthed Arcana books that might be showing their wear.
This one embraces the OGL 1.0 and keeps it alive.
Pathfinder has taken a different path (sorry) and taken their own 2nd Edition and revised it into two new books for Players and GMs.
This uses the new OGL-free version of Pathfinder. I have not spotted many differences yet, but I am still working through the game. The new books combine the older OGL Corebook and some of the Advanced Player's Guide.
These are supposed to be the same system, Pathfinder 2nd Ed, so there are far more similarities than differences.
I am looking forward to delving deeper into both games.