A free IDE for C#, VB.NET, & Boo projects on Microsoft's .NET platform
SharpDevelop is the open-source IDE for the .NET platform. Write applications in languages including C#, VB.NET, F#, IronPython and IronRuby, as well as target rich and reach: Windows Forms or WPF, as well as ASP.NET MVC and WCF. It starts from USB drives, supports read-only projects, comes with integrated unit and performance testing tools, Git, NuGet and a lot more features that make you productive as a developer.
Inspired by JUnit, csUnit brings the power of unit testing to the .NET framework. csUnit is your key to unit testing and test-driven development using .NET languages such as C#, Visual Basic .NET, Visual J#, or Managed C++.
db4o is the world's leading open source object database for Java and .NET. Leverage fast native object persistence, ACID transactions, query-by-example, S.O.D.A object query API, automatic class schema evolution, small size (http://developer.db4o.com)
BugNET is an issue tracking and project issue management solution built using C# and ASP.NET . The main goals are to keep the codebase simple, well documented, easy to deploy and scalable.
Open Source Web Application Framework for the Microsoft ASP.NET platform.
OW.NET -- 1-Wire API port from Java (and J#) to C#. Use the Dallas 1-Wire and iButton chips with standard C# using a serial adapter (also CF.net) or the TMEX drivers on the Windows platform. No J# distribution installation required.
HTMLToWord is a .NET project written in C# that reads well-formed HTML (XHTML) and inserts it as formatted text into a Microsoft Word document using SoftArtisans' OfficeWriter for Word (WordWriter) Enterprise Edition (EE).
ASP.NET-CMS is aimed to be a good easy to use and manage web based content management system. It will include all possible features that a web application can have like a web portal. It will have good administration features.
Free and easy-to-use webmail script with AJAX interface. Supports POP3/IMAP accounts, SMTP, SSL. Users can check and send mail, use address book. Skins, non-English languages, UTF-8. MS SQL/MySQL/MS Access backends supported.
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OmniPortal was built on the idea of having a web-portal-kernel, that could handle security, themeing, and localization. This means that you can create any web based system on top of OmniPortal (i.e. ERP, CMS, CRM) easily. Mono and .Net is supported.
Cloud Web Browser is a web browser which uses Microsoft's Trident engine to render websites. It has features like: - Tabs - Bookmarks - Parental Control System - Language support - Theme support etc.
IXSF Search is a web interface for Windows Indexing Service
IXSF Search is a web interface for Windows Indexing Service / Microsoft Index Server. It's written in ASP.NET and can be easily adapted for searching your web-site or it may be used as a customizable intranet / desktop search.
ManagedFusion was built on the idea of having a single Web-Portal Core, that handles modules, security, themeing, and localization. A CMS, ERP, or CRM can be easily created with this powerful framework. Mono and .Net are supported.
Passage .NET Enterprise Portal provides content management and interactive web applications for Customer, Partner, and Employee portal applications.
Build on C# .NET Language .Mailler is application for send Newsletter (please don't use for send Spam, Scan, etc). This project use Application Blocks and n-tier. .
AlexaWidgets is a simple module for Cuyahoga framework. It shows the traffic of your site, monitored by Alexa.com
The XCRM project is base on .net 2.0 ,open source.
AutoProc (Stored Procedure Generator) is a couple of stored procedures which simplifies generating getter and setter procedures for a given Sql Server 2005/2008 table.
Beyondsky is an open-source content management system. It is totally Ajaxified with multiple skins, and easily migrated among different database.
CS Localization is a WebService and WinForm application developed to ease the localization efforts for the Community Server software suite.
Set of .NET libraries, UI controls & applications for managing & synchronizing contact information. It includes managed wrappers for file formats like vCard, and classes to manage/sync contact information with popular applications & online services.
DiffSchema analyses the schema of MS SQL Server databases and tells you what the differences are. It's great for making sure your database structures are identical between your development and live environments. It's also very easy to use.
Two player chess game to be played over TCP/IP, e-mail or a through a website.