Font Software:
Adobe Type Manager Light (free) - Use and print PostScript Type1 fonts. Windows and Macintosh versions.
The Font Creator Program - Font creating/editing software for Windows.
FontForge - This is a versatile font editor. It is open source so it can be downloaded freely. It runs under many UNIX/LINUX like systems including Cygwin (a UNIX like shell for Windows).

Other Software:
Stuffit Expander for Mac and Windows (demo) by Allume Systems - Expands compressed and encoded files. Mac and Windows versions available. This is a useful utility for crossplatform work.

Font Information and Software:
Comp.fonts FAQ - Frequently asked questions about fonts. A wealth of information here.
TrueType and Type 1 comparison - Good non-technical comparison.
Another TrueType and Type 1 comparison - Brief overview of the two formats.
TrueType Typography - Just about everything you would want to know about TrueType fonts.
Microsoft Typography home page - Microsoft typography related information, news, fonts, tools, links, etc.
Apple Typography home page - Apple typography related information, tools, links, etc.
Apple Font Tools - Apple conversion, diagnostic, editors and other font tools.
Adobe Systems Web Site - Creators of Adobe Type Manager, Photoshop, Illustrator, Acrobat and many other software innovations. They have a large type library. This site has lots of useful font information.
Get ATM light (free) - Use and print PostScript Type1 fonts. Windows and Macintosh versions.
Typography resources - Information on OpenType, Multiple Master and other font formats.
Macintosh character access chart (PDF) - Key sequences used to access characters in a standard Macintosh font.
Windows character access chart (PDF) - Key sequences used to access characters in a standard Windows font.

Free Font Sites:
dafont.com
1001fonts
1001freefonts
Filelibrary.com
Typoasis
Dr. Berlin's Foreign Font Archive
FREELANG Foreign Font Archive
Yamada Language Center Font Archive
Fontface.com
Filecart