HistoryWindow for Visual Studio 1.0 (by Quest Software)
Save Historical versions of your source code edits. So you don't loose changes.

SQL Optimizer for Visual Studio 1.5 (by Quest Software)
Optimize SQL Server Queries in Visual Studio

CompareRocket for Visual Studio 1.5 (by Quest Software)
Compare and Synchronize SQL Server in Visual Studio

Toad for MySQL 2.0.1 (by Quest Software)
Toad for MySQL provides a development environment that improves productivity

Spotlight on MySQL 2.0.1 (by Quest Software)
Spotlight on MySQL diagnoses performance issues by displaying all DB activity

HistoryWindow for Visual Studio 1.0 (by Quest Software)
Save Historical versions of your source code edits. So you don't loose changes.

SDE for Visual Studio .NET (PE) for Windows 3.0 Profes (by Visual Paradigm)
Visual Studio UML plugin: UML diagrams, use case modeling, textual analysis...

VBBackup 1.4 (by R.M. de Boer Software)
VBBackup, never loose your VB source code again!

Code Historian 2.0 (by Smart Bear, LLC)
Diffs, code-reviews, and visualizations for SourceSafe, Perforce, and CVS

SDE for Visual Studio .NET (ME) for Windows 3.0 Modele (by Visual Paradigm)
Visual Studio UML modeling plugin: UML diagrams, code generation, model to code,

NoteIT 1.96 (by Digital Services of South Florida, Inc.)
Never loose information again, search the Web and access your notes quickly.

Visual Integration Studio 2.8.1.1 (by CrossRhoades Software)
Visual Integration Studio - Data Integration for .NET Developers

Project Analyzer 8 (by Aivosto Oy)
Source code analyzer and documentor for Visual Basic, VB.NET and VBA

CompareRocket for Visual Studio 1.5 (by Quest Software)
Compare and Synchronize SQL Server in Visual Studio

Studio Complete 1.0 (by Aivosto Oy)
Visual Studio .NET add-in that completes code as you write it

Dynamic AutoComplete Tool 1.1.125.0 (by LaMarvin)
Improve usability of your WinForms application and save your users' time.

COM Express for .NET 3.4.1 (by Shoutsoft, Inc.)
a template driven .NET code generator which creates 3-tier app with BO and GUI

Creator Forms 1.0 (by Perikov Vadim)
Creation of windows of the non-standard form for programs on Visual Basic

HistoryWindow for Visual Studio 1.0 (by Quest Software)
Save Historical versions of your source code edits. So you don't loose changes.

RQDEV Studio 1.0 (by rqdev)
Radpiq Code source editor with auto-completion support for all objects.