.NET Reactor protects your intellectual property by mixing any pure .NET Assembly (written in C#, VB.NET, Delphi.NET, J#, MSIL...) with conventional native code. In detail, .NET Reactor builds a native wall between potential hackers and your .NET code. The result is a standard Windows based(non MSIL compatible) file. The original .NET code remains intact, well protected by native code and invisible for prying eyes.

AXE is a hex editor/analysis tool that combines a rich GUI with powerful features.

With the AXE editor you can cut, paste, drag, drop, undo, use Unicode, set bookmarks, jump, goto, find, replace, open multiple views, mark regions, and zoom.

With AXE's analytic facilities, you can define structures, run scripts to transform or find data, use arithmetic on regions, diff, and more.

AXE works on arbitrarily huge files, disks, and memory.

Powerful Windows Software Protector. Designed for software developers who wish to protect their applications against advanced reverse engineering and software cracking. SecureEngine® is an innovating and revolutionary technology for protecting Microsoft Windows applications against modern cracking. Its architecture and design is a completely new idea, never seen before on the security-world.

The typical problem with decompilation is the absence of full source information in the executable file. Dis# is a .NET decompiler which allows you to edit local variables and other names and keep the changes in a project file. The decompiled code is similar to the original source. A trial version is available.

Cavaj Java Decompiler is a graphical freeware utility that reconstructs java source code from CLASS files. You can decompile java applets, jar and zip files producing accurate java source code. Browse the reconstructed source code with the Class View for instant access to methods and fields. Cavaj Java Decompiler is a standalone Windows application, it doesn't require you to have Java installed.

Quickly produce professional looking puzzles for students, employees, friends and family with Crossword Construction Kit. Enter words and clues, select a puzzle shape and page layout, and generate the puzzle. Design custom puzzle shapes or page layouts. Print puzzles, create graphic images or create interactive puzzles to solve on your computer. Upload puzzles to web pages where visitors can play and solve the puzzles online. And much more!

This is an extension of the "Program Plus".
It enables compiling with options from windows explorer's menu.
You can compile next types of files: C/C++(c, cpp), C#(.cs), Java(.java), Assembler(.asm).

BDASM is a multi-cpu, multi format file disassembler for Windows and now it features a Windows Debugger. Currently it supports ucLinux, ELF, X-Box, PE and raw binary files. The CPU support includes the Intel x86 16/32bits processor family up to SSE2 instructions, and PowerPc 603,604 32bits CPUs, lately support for ARM processors was added trought plugins. You can program your own plugins to extended BDASM formats and CPU's, and SDK is available

Visualize your source code with flow charts and UML activity diagrams. Visustin charts your code automatically. Print the charts or export to Visio, Word or PowerPoint. Visustin flowcharts Ada, ASP, assembly language, BASIC, C/C++, C#, Clipper, COBOL, Fortran, Java, JSP, JavaScript, LotusScript, Pascal/Delphi, Perl, PHP, PL/SQL, PowerScript, PureBasic, Python, QuickBASIC, REALbasic, T-SQL, VB, VBA, VB.NET and Visual FoxPro.

Obfuscator is a tool to modify x86 assembler source code in this way to make an analysis of compiled code very difficult.

It is an unusual tool and the target audience is quite small, but if you're writing assembler code and you want to protect your work from decompilation or just to make it as hard as it's possible to analyze, you might want to try it.