Some of the other, older language environments I've found are the C-based CPFG, C++-based LPFG, L-Py for python
http://algorithmicbotany.org/lstudio/CPFGman.pdf http://algorithmicbotany.org/lstudio/LPFGman.pdf http://algorithmicbotany.org/papers/lpy.fps2012.pdf