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"Everything should be made as SIMPLE as possible, but no simpler"

(A. Einstein)

About SIMPLE 1.0

Single-particle IMage Processing Linux Engine 1.0 (SIMPLE 1.0) does ab initio 3D reconstruction (programs cluster & origami), heterogeneity analysis (programs cluster, origami & cycler), and high-resolution refinement (programs align, reconstruct, automask & cycler).The SIMPLE back-end consists of an object-oriented numerical library with a single external dependency - the Fastest Fourier Transform in the West (FFTW). The SIMPLE front-end consists of a few standalone, interoperable components developed according to the 'Unix toolkit philosophy'. SIMPLE is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the license, or (at your option) any later version. SIMPLE is distributed with the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see


SIMPLE 2.0 can be found here.

SIMPLE 2.1 can be found here.