Free Developer Tools

• Eclipse
  Open-source, extensible development platform that's very popular with enterprise users.
  

• Dev-C++
  Integrated development environment for C and C++ programming.

• Free Pascal
  Open-source Pascal compiler.

• AutoIt
  Windows programming language that's very similar to BASIC.

• DIR2HTML
  

Automatically creates HTML indexes from file system directories

• Inno Setup
  Free installer that supports all versions of Windows.

• NSIS
  Short for "Nullsoft Scriptable Install System," NSIS is an open-source system that lets you create the logic you need to install your apps on Windows.

• Link Checker Lite
  Easily find broken links and syntax errors on your Web site.

Free Educational Software - Software for Education

• Celestia
  Travel to any point in the known universe without leaving your desk.

• WordWeb
  One click takes you to dictionary, thesaurus, and Wikipedia entries for words found in most applications.

• Google Earth
  View satellite imagery of any point on Earth.

Free Email Desktop Software Client

• Thunderbird
  Mozilla's mail client works well with Firefox and makes it easy to organize your messages.

• Pegasus
  First released in 1990, Pegasus is bills itself as "the Internet's longest-serving PC e-mail system."

• ePrompter
  Check up to sixteen different password-protected e-mail accounts from one place.