The most recent Windows version of WordNet is 2.1, released in March 2005. Version 3.0 for Unix/Linux/Solaris/etc. was released in December 2006. Version 3.1 is currently available only online.
WordNet binaries and source are available for Windows and Unix-like systems (Irix, Solaris, and Linux binaries). There is also a Prolog package and some additional standoff files.
Use of WordNet in other projects or papers
Please note that WordNet® is a registered tradename. Princeton University makes WordNet available to research and commercial users free of charge provided the terms of our license are followed, and proper reference is made to the project using an appropriate citation. Acknowledgement is both required for use of WordNet, and critical to future funding for project maintenance and enhancements.
WordNet 2.1 for Windows
WordNet browser, command-line tool, and database files with InstallShield self-extracting installer:
WordNet 3.0 for UNIX-like systems (including Linux, Mac OS X, Solaris)
Before you download: The WordNet 3.0 README file contains additional information about the release. You can read about the changes from version 2.1.
Source code and binaries:
Download tar-gzipped: WordNet-3.0.tar.gz
Download tar-bzip2'ed: WordNet-3.0.tar.bz2
Download just database files: WNdb-3.0.tar.gz
WordNet 3.1 DATABASE FILES ONLY
You can download the WordNet 3.1 database files. Note that this is not a full package as those above, nor does it contain any code for running WordNet. However, you can replace the files in the database directory of your 3.0 local installation with these files and the WordNet interface will run, returning entries from the 3.1 database. This is simply a compressed tar file of the WordNet 3.1 database files.
Prolog version of WordNet 3.0
ANSI Prolog version of the WordNet database.
Sense-key mapping from version 2.1 to 3.0