As software development companies, their biggest concern is that their software will be decompiled/cracked soon after it is launched, so many developers choose to pack/encrypt their software products. In general, the file size of packed software is smaller, and the program itself becomes more secure. These days, packer has been moving towards virtual machine protection technology, whose greatest benefit is that it can greatly improve the protection strength. Packers employing this technology include Themida, WinLicense, EXECryptor, etc.; While the downside is that it affects the startup and running speeds of program, so it's not suitable for every situation.

Considering that web application users use a wide variety of web browsers, web programmers must run compatibility and performance tests on various browsers before an app goes live. As a result, you'll have to install all the popular web browsers on the same computer, and you'll even have to run the same tests on all kinds of media devices (such like PC, smart phones and tablets) to simulate how an application works under different page sizes, resolutions and so on conditions. That is really head-scratching and very inefficient.

Database Application Builder is an excellent database application rapid development tool designed for beginner developers on Windows, created by Longtion Software. It enables user to easily and simply create database-powered local and web applications. You can use it to design an application that displays data to your users, and allow them to enter new information or modify existing data, allowing user to interact with the information stored in the database.

Batch Compiler is a professional and easy to use batch scripts editor and compiler, also currently the only one real sense of integrated development environment for batch development, developed by Isuru Arunoda from Sri Lanka. It comes with excellent batch file editor, debugger, converter, and compiler, and has a very clean and clear user interface.

ILSpy is a free and open-source .NET assembly browser and decompression tool that is pretty popular in the C# development field, developed by ICSharpCode (i.e. the development team of SharpDevelop). It has the user interface, layout, and decompilation functions similar to Red Gate Software's .NET Reflector. Moreover, sometimes for some assemblies that can not be decompiled with .NET Reflector (because of encryption), it's still possible to do that using ILSpy. Simply speaking, it has only one purpose - to finally completely replace .NET Reflector and do better.