DevFilesLand
Directory of freeware and shareware products for software developers.
http://www.devfilesland.com/

Kinook Software
Provides a tool that enables software developers to create an automated, repeatable process for building their software.
http://www.kinook.com/

Reliable Software
Developers of Code Co-op, a server-less version control system for collaborative development. Site offers information on programming, including Windows tutorials and the online book "C++ in Action", source code, and a discussion on MFC.
http://www.relisoft.com/

FMS Inc.
Provider of Microsoft Access, Visual Basic and SQL server tools. Offers a collection of resources for Microsoft Access, VB and SQL Server developers.
http://www.fmsinc.com/

Jargon Software
Provides software tools for development and deployment of thin-client wireless and desktop PC Internet business and e-commerce applications.
http://www.jargonsoft.com/m2/index.html

SoftArtisans
Produces business-solution products for report and data management (ExcelWriter), industrial-grade file transferring (FileUp) and Web development (ASPstudio).
http://www.softartisans.com/

Fundamental Objects
Offers development tools and services for windows and handheld operating systems.
http://www.fo.com/

Reverse Engineering Tools
Sizable list of over 50 tools (many freeware) with very brief descriptions and links.
http://scgwiki.iam.unibe.ch:8080/SCG/370

toolsfactory GmbH
Offers developer tools including Doc-O-Matic, a Source Code Documentation System for C/C++ and Delphi.
http://www.toolsfactory.com/

Headway Software
Advanced source code analysis techniques to understand and measure structure (architecture, design, composition, dependencies).
http://www.headwaysoftware.com/