News

• Jul 07, 2014
  LEMON 1.3.1 released
  Maintenance release. Please visit the NEWS files for more details on the changes.
• Aug 10, 2013
  LEMON 1.3 released
  Major release with several new features and improvements. Please visit the NEWS file for more details.
• Aug 10, 2013
  LEMON 1.2.4 and 1.1.6 released
  Maintenance releases. Please visit the NEWS(1.2.4) and NEWS(1.1.6) files for more details on the changes

... more news

Welcome to ​COIN-OR::LEMON

LEMON stands for Library for Efficient Modeling and Optimization in Networks. It is a C++ template library providing efficient implementations of common data structures and algorithms with focus on combinatorial optimization tasks connected mainly with graphs and networks.

LEMON is a member of the ​COIN-OR initiative, a collection of ​OR related ​open source projects. You are free to use it in your commercial or non-commercial applications under very permissive license terms.

The project was launched by the ​Egerváry Research Group on Combinatorial Optimization (EGRES) at the Department of Operations Research, Eötvös Loránd University, Budapest, Hungary in 2003. Up to this point, the developers of the library work at the ​Eötvös Loránd University, Budapest and at the ​Budapest University of Technology and Economics.

Starting Points

• Documentation -- Installation guide, tutorial and reference manual.
• Downloads -- Download LEMON.
• Local site -- Some local information related to the LEMON team.

Related Projects

• gLemon -- A graph editor for LEMON.
• ​pyLemon -- A ​Python language binding for LEMON.
• Other projects -- Unofficial contribution projects for LEMON.

Sponsors