IDE - #Develop (win)

#develop (short for SharpDevelop) is a free IDE for C#, VB.NET and Boo projects on Microsoft's .NET platform. It is open-source, and you can download both sourcecode and executables from this site.

Supported Programming Languages

* C# (Code Completion, Windows Forms Designer)

* VB.NET (Code Completion, Windows Forms Designer)

* Boo (Code Completion, Windows Forms Designer)

* IronPython (Code Conversion, Windows Forms Designer)

* F#

Developer Productivity

* Refactoring

* Parallel build support for multi-core machines

* Multi-framework targetting (.NET 2.0, 3.0 and 3.5)

* Code Autoinsert

* Starts from a USB memory stick

* Read-only project support

* Full MSBuild 3.5 support

Quality Tools

* Integrated Debugger

* Code Analysis (FxCop)

* Unit Testing (NUnit)

* Code Coverage (PartCover)

* Profiler (Roadmap)

* Integrated Subversion support (TortoiseSVN)

* StyleCop addin

http://www.icsharpcode.net/OpenSource/SD/Default.aspx

Remote Access - UltraVNC (win)

UltraVNC is a powerful, easy to use and free software that can display the screen of another computer (via internet or network) on your own screen. The program allows you to use your mouse and keyboard to control the other PC remotely. It means that you can work on a remote computer, as if you were sitting in front of it, right from your current location. If you provide computer support, you can quickly access your customer's computers from anywhere in the world and resolve helpdesk issues remotely.

http://www.uvnc.com

Helpdesk - OTRS (win/linux)

OTRS, Open-source Ticket Request System, is a free and open-source trouble ticket system software package that a company, organization, or other entity can use to assign tickets to incoming queries and track further communications about them. It is a means of managing incoming inquiries, complaints, support requests, defect reports, and other communications.

http://en.wikipedia.org/wiki/OTRS

Graphic Tool - GIMP (win/linux)

GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.

It has many capabilities. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc.

GIMP is expandable and extensible. It is designed to be augmented with plug-ins and extensions to do just about anything. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted.

http://www.gimp.org

Office Suite - OpenOffice.org (win/linux)

OpenOffice.org is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages. It can be downloaded and used completely free of charge for any purpose.

http://www.openoffice.org