For more details on LEMS see:
Robert C. Cannon, Padraig Gleeson, Sharon Crook, Gautham Ganapathy, Boris Marin, Eugenio Piasini and R. Angus Silver, LEMS: A language for expressing complex biological models in concise and hierarchical form and its use in underpinning NeuroML 2, Frontiers in Neuroinformatics 2014, doi: 10.3389/fninf.2014.00079
Java based LEMS interpreter/simulator
jLEMS can be used to parse and execute any LEMS model. For an application which adds NeuroML 2 ComponentType definitions and various options for importing & exporting LEMS to other formats, see jNeuroML.
Python based LEMS interpreter/simulator
This code is distributed under the terms of the GNU General Public License v3.