SoftArtisans

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

GenerExe's XPad

Allowing to visually design, program, simulate, document and compile native code for plug-in targets, including the PIC16F84, 68HC11 and PalmOs platforms.
http://www.generexe.com/

Optimal Solution Software

Provide expert system development toolkits, and report production and printing tools, data migration solutions.
http://www.optsol.at/

Semantic Designs

Provides automated software engineering tools in the areas of legacy migration, software measurement and analysis, custom compilers and program transformation tools.
http://www.semanticdesigns.com/

JADE

A software development technology that makes it easier and faster to create computer programs.
http://www.jadeworld.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/

Free Live Knowledge

freeliveknowledge.com is a place that offers free tutorials in many fields, from HTML coding to Exotic recipes… just use the search bars on the main page and you will certanly find what you want to know about.
http://www.freeliveknowledge.com

Headway Software

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

Level 8

Provides Geneva AppBuilder, an enterprise-scale, repository-based, integrated application development environment that allows for design, deployment, and maintenance of high-volume, distributed J2EE applications.
http://www.appbuilder.com/

DevFilesLand

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