Helloooooo :)
First Tomasso, it's nice to know it's working well for you :). We need feedback and contributions, even the smallests (like docs, or blogposts with your experiences or tutorials).
Answering your question, GarageGlorp does not yet use the cursors from the Garage drivers. I do not know what exactly should be added to the Glorp's GarageAdapter, maybe we can take a look at it if you are available.
For the rest:
OpenDBX -> it is a database abstraction written in C. It was developed outside the community, though we contribute if necessary. There is also a driver in Pharo providing bindings against this opendbx library.
Garage -> a database abstraction in Pharo. It provides a common interface to talk with several drivers (e.g., opendbx, native postgres, native mysql...)
Glorp -> an object relational mapping framework that connects to a database (therefore it needs some database driver) and converts relational data into objects.
DBXTalk -> the umbrella project of all the above (and their connections)
Cheers,
Guille