Fonts

Bach, Musicological Font - [Win - Mac] Shareware font for writing essays or compiling databases which need to have some musical symbols in them.
http://www.music.qub.ac.uk/~tomita/bach-mf.html

DVM Publications - Company that features some font packages for engravers and publishers: includes demos and online ordering.
http://www.dvmpublications.com/

Sigler Music Fonts - Features Jazz Font and Swing Font, usable with Finale and Overture. Includes demo pages, online ordering form.
http://www.jazzfont.com/

Caltabiano: Music Fonts - Offers Sicilian Numerals, Ghent Percussion Font, and Rehearsal Letters. Samples and order form available.
http://www.caltabiano.net/shareware/index.html

Toccata and Fughetta - Two fonts designed to be used with Finale. Includes samples, free demos, and ordering information.
http://www.efn.org/~bch/AboutFonts.html

Express Music: Fonts - Offers three music fonts: Ashmusic, Leemusic and Russmusic. Available for both Mac and PC.
http://expressmusic.com/

Sonata - [Win - Mac] Description and order form for this font by Adobe.
http://store.adobe.com/type/browser/P/P_021.html

Gregorian Chant Fonts - Featuring StMeinrad and StMeinradAux, that contain the symbols necessary to reproduce Gregorian chant.
http://www.music.princeton.edu/chant_html/fonts.html

November - Made up of more than 330 symbols, from basic shapes such as note heads, clefs and rests, up to rarer characters like microtonal accidents, plain-song clefs or baroque ornaments.
http://www.klemm-music.de/november/index_e.htm