GNU Aspell, usually called just Aspell, is a free software spell checker designed to replace Ispell. It is the standard spell checker for the GNU operating system. It also compiles for other Unix-like operating systems and Windows. The main program is licensed under the GNU Lesser General Public License (GNU LGPL), the documentation under the GNU Free Documentation License (GNU FDL). Dictionaries for it are available for about 70 languages. The primary maintainer is Kevin Atkinson.