Ef is a software for charged particles dynamics simulation. It's primary areas of application are accelerator science and plasma physics.

Ef focuses on nonrelativistic energies. Currently, particular emphasis is placed on low-energy beams, such that can be found in ion sources and electron guns.

Particles dynamics is traced under action of external electromagnetic fields. Particle self-interaction is taken into account with particle-in-cell method.

Attention is given to integration with CAD software to allow for simulation of complex real-life experimental setups. An experimental plugin for FreeCAD exists.

Ef is a free software -- it's source code is open and avaible for modification and redistribution. It is written mostly in C++. Basic MPI support allows to take advantage of parallel execution in multiprocessor environment.

Development goals and current features are described in detail in appropriate wiki sections, as well as installation procedure. Some usage examples are also given.