Visual Studio Express:Free, but limited editions of Visual Studio 2005 for a single programming language supported by .NET.
.NET Reflector: A CLR class browser with XML documentation viewer, type search, disassembler and C#/VB view.
.NETUnit: An implementation of Kent Beck's XUnit testing framework designed specifically for unit testing components written for the .NET platform. [LGPL]
Add-in Express .NET Edition: A visual RAD tool for creating COM add-ins, Smart Tags and RTD Servers for Microsoft Office family applications in Visual Studio .NET. Also exist Delphi edition.
ADO.NET Express: ADO.NET Express is an add-in for Visual Studio 2003 that generates ADO.NET code for calling stored procedures and executing common types of SQL statements. It supports C#/VB and SQL Server/Oracle.
AlachiSoft TierDeveloper: An object-to-relational mapping and code generation tool. Map relational tables to data objects, embed sophisticated SQL in them, and generate code for .NET (C# and VB.NET).
Allocation Profiler: Profiler for visualizing and analyzing allocations on the .NET managed heap
Anakrino: A decompiler for .NET applications. Decompiles .NET assemblies into C# source code.
Anticipating Minds: devAdvantage: a programming tool that finds bugs and issues in .NET C# code and collaborates with developers to fix them. devMetrics: a software management tool that gathers metrics on .NET C# code to identify issues and make informed project decisions. ArtificialMind .NET: free SDK for developing applications that employ Artificial Intelligence algorithms.
ANTS: The Advanced .NET Testing System, a .NET based load testing tool and code profiler.
AppForge Enterprise Developer Suite (EDS): Designed for enterprise organizations and system integrators who wish to leverage their Microsoft Visual Studio .NET and Visual Basic 6.0 resources for mobile and wireless application development.
AQTime.NET: Performance and memory optimization tool for Microsoft's .NET framework and Visual Studio .NET environment.
Aquifer: .Net application platform suite for rapid custom applications development and data security. By Systems Management Engineering, Inc.
C-Sharpener For VB: Automatically converts VB.Net projects to C# projects through a Visual Studio .Net Add-in. It typically converts 99% of your VB source code and all other project related files. By Elegance Technologies.
CodeXchange: An Visual Studio.NET add-in and a standalone application providing instant integrated access to an online repository of ready to use .NET code snippets.
Codify: A code generation add-in for Visual Studio.NET. It allows replace repetitive code patterns in projects. By Workstate Technologies.
CompileX.NET: Automatic data-driven .NET application generator
Crystal Reports for Visual Studio.NET: The report generation tool that is expected to be included in Visual Studio.NET. By Crystal Decisions.
csUnit Unit Testing Tool for the .NET Framework: C# based unit testing framework for the .NET framework. Includes samples, tutorials and FAQ.
DataAide: A VB.Net desktop application that utilises SQL Server 2000 client tools to generate VB.Net, C#, or VB6 classes and stored procedures for tables in a SQL Server 2k database. It also generates ADO.Net or ADO code to call stored procedures.
DataDirect Connect for .NET: .NET data provider suite built with 100% managed code, delivering data connectivity for Sybase, Oracle, DB2 and SQL Server.
DataKwikWatch: Add-In to Visual Studio.NET for viewing data objects in a datagrid during debug mode.
DeKlarit: A Rapid Application Development tool with Visual Studio .NET integration
Dis#: .NET decompiler. It allows to edit local variables and other names and persist changes in project file.
Framework Studio: An IDE for rapid application development, building web applications based on .NET using C#, XML, webservices, SOAP.
FxCop: A code analysis tool that checks for conformance to the .NET Framework Design Guidelines. FxCop inspects assemblies for more than 175 design defects. [Freeware]
Gen-X: A template tool to help you reuse source code by Developmentor.
Iron Speed Designer: A application/code generator for .NET developers. Generate web-based databound application - from simple online forms applications to a sophisticated CRM application.
IronWorks Code Generator: Automatically generates C# and VB.NET n-tier web applications. Template-based and fully extensible.
Jungle Creatures, Inc.: Provide .Net tools: Decompiler.NET is combination Decompiler and Obfuscator for Microsoft .NET. Deploy.NET is a tool for packaging Windows Forms based .NET applications for deployment. XMLModeler is a C# based graphical XML editor that performs real time validation of XML documents according to their associated XML Schema. [Commercial]
Lab Technology.NET: Data management solution for the game industry. It combines the power of the .NET framework with productivity-boosting features. Tool lets manage data as .NET objects and eliminates the need to tediously map it onto database tables, XML files or other data containers.
Lesser-Software: Tools for .NET including a Smalltalk-like browser, decompiler, interlanguage translation obfuscator
LightningCode: A .NET Web application generator.
Link.NET: An application development platform for building content managements, desktop publishing, CRM, and ERP applications.
ManagedXLL: Create true Excel 97-2003 Add-Ins (XLL) in any .NET language (C#, VB.NET, C++) and make objects available in Excel worksheets instantly.
NAnt: A .NET based build tool. A replacement for make based on Ant.
NDOC (formerly DOC.NET): Merges the assemblies and XML documentation files produced by csc.exe and creates a compiled HTML Help file enabling browse own libraries just like the .NET Framework Class Library. [Open source, GPL]
NUnit: A framework, based on the JUnit family, for building application unit tests. It assists with test-driven design, a technique of Extreme Programming. By Philip Craig.
oakland software: Provides the .NET Component Inspector which dynamically inspects .NET code, includes visual design surface and event tracing.
ORM.NET: A O/R mapping and code generation tool create a complete ADO.NET Data Access Layer from a SQL server schema. By by Olero Software.
PT Code Generator Lite: A software to generate C#, Visual Basic.NET and SQL source code based on SQL data tables and views. [Freeware]
RADvolution Designer: An integrated RAD tool for Visual Studio.NET with drag&drop layout engine technology, control naming convention and .NET components and controls. Allows fast design of forms and applications. By DevelopGuidance.
Remaid: A framework (hosted at Arlanet BV servers) provides .NET developers with a fast and secure fundament for business applications.
RichPayment.NET Payment Web Service: An ePayment web service using SOAP & XML for processing credit cards, debit cards and check services with RichPayments.
SetPoint: A full-featured Aspect-Oriented Tool (AOT) engine for the .NET framework. It heavily relies on the use of RDF/OWL for the definition of "semantic pointcuts". It features an IL-level, highly dynamic weaver and LENDL, an eye-catching definition language. In prototype state now.
SharpDevelop: A free editor for C# and VB.NET projects on Microsoft's .NET platform. [GPL]
SharpPlus: Provide components and tools for .NET framework includes: SharpPlus for C#Builder and Delphi8 is an automatic component renamer and typo auto corrector (commercial); OverSeer for .Net is a message-based debugging tool for .Net Framework which is ported from OverSeer for delphi written by Pavel Cisa (freeware).
SharpToolbox: Categorized directory of the existing development tools, libraries and add-ins for .NET.
SteadyTier.NET: A tool intended to speed up rich-client Internet applications development on the .NET platform. Includes a component framework and a Visual Studio .NET add-in to automate middleware code development.
StudioSpell: Spell checker Add-In for Microsoft Visual Studio .NET, providing a user friendly tool for checking web-page Html and strings in source code.
Terra-Axis - .Net Enablers: A component-based development framework that supports the rapid development and deployment of Web applications.
TestDriven.NET: Unit-Testing add-in for Visual Studio .NET fully integrated with all major unit testing frameworks including NUnit, MbUnit, csUnit and Visual Studio Team System.
Unite.NET: Unit- and Integration testing for the .NET platform.
Unix.NET: Free software collection of various Unix utilities that have been ported to the Common Language Runtime including "echo", "ftpd" and "kill". [BSD License]
VB.NET XML Comments Creator: Complete Intellisense and .NET code documentation for any .NET language directly from your source code.
Vil: A tool for collecting metrics from .Net assemblies. Metrics relate to classes, methods, inheritance, cohesion, coupling, complexity. [Freeware]
Visual Paradigm SDE for Visual Studio .NET 2003: Allows generate .NET source code from UML model directly, or reverse engineer existing code into the model for further enhancement.
X-Unity: A unit testing and integration environment for the Microsoft .NET Framework. Features include simplified unit test development, automated builds, Visual SourceSafe interoperability and e-mail notifications.