CSets: Supplemental Unicode Mapping Tables
Mark Leisher provides over 40 mapping tables between Unicode and other encodings/character sets. It is intended to supplement the character set mapping tables already available at the Unicode FTP Site.
http://crl.nmsu.edu/~mleisher/csets.html

ConScript Unicode Registry
The purpose of the ConScript Unicode Registry (CSUR) is to coordinate the assignment of blocks out of the Unicode Private Use Area (E000-F8FF and 000F0000-0010FFFF) to constructed/artificial scripts, including scripts for constructed/artificial languages.
http://www.evertype.com/standards/csur/

How to interoperate between UTF-8, UTF-16, and UTF-32
Ken Lunde illustrates with some Perl code how the various Unicode Transformation Forms can interoperate. This article was published in the IBM DeveloperWorks Unicode section.
http://www-106.ibm.com/developerworks/unicode/library/u-encode.html

NameMap
Map from any Unicode 3.0 character to its official name, or vice versa, adding only a 61kB jar to your application.
http://www.gjt.org/pkgdoc/org/gjt/cuspy/unicode/

SC UniPad
SC UniPad is a Unicode plain text editor for the Windows NT/2000/9x/ME and XP operating systems.
http://www.unipad.org

The International Phonetic Alphabet in Unicode
Pages by John Wells dedicated to the use of the IPA symbols.
http://www.phon.ucl.ac.uk/home/wells/ipa-unicode.htm

Unicode-Afrique
French language discussion group for publicizing African Unicode projects, considering issues relating to use of Unicode for African languages, and sharing experience and info on development & use of Unicode fonts for Africa.
http://fr.groups.yahoo.com/group/Unicode-Afrique/

Uniqoder [This link generated an error during the last automatic check]
UNIQODER is a freeware add-on to Microsoft Word for Windows 97-2000 which enables you to enter Unicode characters quickly and easily. It focuses on Extended Latin, phonetic and Greek characters, including special routines for diacritics.
http://hem.fyristorg.com/dahloe/uniqoder/

custom cf tag converting utf-8 to/from iso-8859-1
First custom coldfusion tag to convert between ISO-8859-1 and UTF-8 encoding.
http://devex.macromedia.com/developer/gallery/info.cfm?ID=E7DCA16E-07E3-11D6-83FA00508B94F85A&method=Full

Simredo
Free Java Unicode editor by Cleve Indriko with special features for Esperanto and right-to-left languages.
http://purl.oclc.org/net/klivo/simredoeng