The latest version of ILASP is available to download from GitHub. Older (unsupported) versions are available to download from SourceForge. Note that as ILASP versions 1-4 share a common codebase, you should download the latest version of ILASP (currently version 4.0.0) and specify which algorithm you wish to run using the --version option. Older versions of ILASP are better suited to simpler tasks (e.g. learning tasks with no noise), whereas ILASP3 and ILASP4 are specifically targeted at solving learning tasks with large numbers of potentially noisy examples. For more information about each version of the ILASP algorithm, run ILASP with the --version-info option.