Richard Semper

THE place to go for free soundfonts - large library, many contributors.

Large collection of free soundfonts and other software. See their article ‘How to build a bank of soundfonts’. Registration required for downloads.

Offers collections for sale, some free soundfonts available.

Shareware Music Machine. SoundFonts, editors, players, and utilities.

GENERAL INFO   -   DOWNLOADS   -   WEBSITES   -   UTILITIES
There are many sites offering large libraries of both free and paid for soundfonts for download.
I am including links to the main ones here, along with links to further sites which give more information
and insight on the subject. Note that as I write (summer 2011) many sites are outdated and links to some
sites no longer work properly. The ones below I have checked to ensure they are still current.