Successor of BeIDE

Please tell me, what is the recommended successor for BeIDE, or otherwise, what is the recommended development environment to make myself familiar with? It could be an interesting task for me to write a generic Haiku chessprogram if I only could feel there at home as a developer.

Maybe Paladin

The latest version of Paladin is 1.2.1 and available from

DarkWyrm reports that Paladin v1.3 now reads BEIDE project files.