Hi, are there any plans to support Linux on the server side in the future or is this perhaps already possible?
You can already use RemoteDB on Linux with Indy-based HTTP Server. It's just the installer doesn't compile for Linux platform yet, but you can simply manually compile the packages for Linux platform and add the proper directories to library path manually.
any plan for supporting Lazarus/FPC on the server side in near future
We have the intention, but it's a long road to accomplish that.