This is the file COPYING. It gives an overview of the licenses used in the Lazarus sources. The Lazarus sources consists of several parts and each part has its own license. Three main licenses are in use: * the GNU General Public License, version 2 (GPLv2) * a modified LGPL (as described in COPYING.modifiedLGPL) * the MPL In general, each file contains a header, describing the license of the file. The license directory tree: / | +- ide (GPLv2) | +- designer (GPLv2) | +- debugger (GPLv2) | +- examples (GPLv2) | +- packager (GPLv2) | +- tools (GPLv2) | +- lcl (modified LGPL) | With the exception of the customdrawn/android interface, | where some files are licensed under the | Apache Licence, Version 2. | +- components/ | +- codetools (GPLv2) | +- synedit (MPL - Mozilla public license) | +- xxx There are various packages under various licenses. Mostly the modified LGPL. See the license in the package files for details. Some are not free for commercial use. The IDE files are the files in the ide, designer, packager and debugger directory. They are under the GPLv2, with the following exceptions: transfermacros.pp, wordcompletion.pp, patheditordlg.pas, outputfilter.pas, inputfiledialog.pas, findreplacedialog.pp, findinfilesdlg.pas These files are under the modified LGPL as described in COPYING.modifiedLGPL.