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.
Comparison to Ispell
Unlike Ispell, Aspell can easily check UTF-8 documents without having to use a special dictionary. But the mechanism behind is still 8-bit. Aspell will also do its best to respect the current locale setting. Other advantages over Ispell include support for using multiple dictionaries at once and intelligently handling personal dictionaries when more than one Aspell process is open at once. However, Ispell follows the Unix convention of being a command applied to a file, e.g., ispell text-file-with-spelling-errors, whereas...