GNU TeXmacs is a free scientific text editor, which was both inspired by TeX and GNU Emacs. The editor allows you to write structured documents via a wysiwyg (what-you-see-is-what-you-get) and user friendly interface. New styles may be created by the user. The program implements high-quality typesetting algorithms and TeX fonts, which help you to produce professionally looking documents. One major objective of TeXmacs is to promote the development of free software for and by scientists, by significantly reducing the cost of producing high quality user interfaces. FriCAS is on of programs that can use TeXmacs as user interface. GNU TeXmacs runs on most Unix architectures, as well as on Windows. Detailed information is available for downloading and installing TeXmacs.

FriCAS interface

FriCAS contains special output format for interfacing with TeXmacs. Together with appropriate plugin included in reasonably recent versions of TeXmacs it allows accessing FriCAS via TeXmacs. Recent version of TeXmacs is pre-configured to automatically interface with FriCAS provided that FriCAS "installed" and available via commandline (in the path).

In the past different interface was in use, see OldTeXmacs