Open Source Software
ChemSep – A column simulator for distillation, absorption, and extraction operations
COCO – A free-of-charge CAPE-OPEN compliant steady-state simulation environment
GNU Octave – A scientific programming language
Maxima –  A computer algebra system
OPENMODELICA – An open-source modeling and simulation environment  for industrial and academic usage.

Learning Communities and Foruns

CHEMRESOURCES – Your Chemical Engineering Community

EIPPCB – European IPPC Bureau – BREFs

EngToolbox – Tools and Basic Information for Design, Engineering and Construction of Technical Applications

LearnChemE – Educational Resources for Chemical Engineering

PSE Community – The World Community for Chemical Process Systems Engineering Education and Research

International Organizations

AIChE – Academy

CACHE – Computer Aided for Chemical Engineering

CAPE – Computer Aided EFCE’s Process Engineering Working Party

CEFIC – The European Chemical Industry Council

EFCE – European Federation of Chemical Engineering

WEF – World Economic Fourm

Educational Journals

CEE – Chemical Engineering Education

ECE – Education for Chemical Engineers

JCE – Journal of Chemical Education