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eXPressor - Software Protection System and PE Compressor. Used as a compressor this tool can compress EXE files to half their normal size. Once compressed, the files execute just like normal. As a protector It is designed to protect applications against crackers. Also can help developers in creation of uncrackable registration keys, and implementation of trial version for protected software. Features: -excelent compression ratios ~70% (this is - tighter than .rar, .zip, upx etc.); -multilevel packing (over and over the same file); -support for various 32bit PE files like .exe, .dll, .net, .ocx, .scr; -customizable resource compression; -password protection for applications; -counteraction to classical memory dumping tools; -detection of cracking tools like file or registry monitors, debuggers; -application integrity check (agains viruses, resource modifications); -anti-debugging and anti-disassembling; -anti memory patching techniques; -protection of application's imported functions using different methods (emulation etc.); -eXPressor offers a set of APIs for interaction betweend decompressing routines and protected applications; -registration keys system using RSA based encryption/decryption algorithm; -keys can be generated using specific hardware ID; say STOP to your application keygenerators; -"stolen" registration keys management, integration of stolen keys in new protected versions of the application; -eXPressor offers the possibility of creating "trial" versions of the application, with limited functionality, and limited evaluation time or number of executions; -reminder message in unregistered version of protected programs; -shell integration, project file saving, command line support and more