Information about the dictionary:

• Dictionary working master list
• Questions and Answers about this project
• How entries get added to the dictionary
• Perl source code for CGI back-end

Here are some other sites that have surveys or dictionaries of programming languages.

NCSA Computing Languages List

Pretty broad list, with short descriptions and links for most entries. Also includes some data-description and formatting languages.
[Large flat HTML file with links]

Tunes Review of Programming Languages

As part of the TUNES project, F. Rideau is examining all existing languages, operating systems, virtual machines, and UI systems. This language list is pretty broad, contains both subjective and objective critique of the various languages, and the related reviews under the main reviews page are also pretty cool.
[Large flat HTML file, some links]

 

More Programming Language Resource Links..

Some more resource links with descriptions.

 

WWW Virtual Library: Computing, Programming Languages

A nice list, not exceptionally broad, but with links for every topic.
[Large flat HTML file, many links]

THE Language List

The largest and most comprehensive list on the net, and a fine job by the CUI group at University of Geneva and Bill Kinnersley. This list has a very good search capability, and many of the entries have links to FTP sites for compilers and tools. Unfortunately, some of the links on the list are a little out of date, but its source attribution and journal references are great.

[Very large searchable database]