Original: Alex Free
This: JPL
Open95Keygen is a portable open source program that generates random valid Product Keys (both OEM and Retail types) for Microsoft's Windows 95 and Windows NT 4.0 operating systems.
The Windows 95/NT 4.0 OEM/Retail Product Key algorithms have been reverse engineered by many people. Open95Keygen is a clean room design implementation not based on any existing software, it is written based on the specifications of the algorithm which is inherently not copyright infringement. I was inspired to write Open95Keygen after watching the YouTuber stack smashing's video Why 111-1111111 is a valid Windows 95 key.
GitHub || HomePage || Macintosh Garden
View all releases.
Windows 95+, Mac OS, Linux
The win32 release works on Windows 95 and newer (requires Internet Explorer 4.0 installed if using Windows 95).
The Linux releases for x86 32 bit and x86_64 64 bit are static executables meaning they should work on most modern distros. If the Linux versions provided does not work for you, please compile from source.
The Mac OS 8 release works on Mac OS 8 and Mac OS 9 on both PowerPC and 68K Macs.
The Mac OS X release works on PowerPC Mac OS X 10.3.9-10.6.8. Intel Macs should be able to use this release on Mac OS X 10.4-10.6.8 provided that the Rosetta software is installed. If you want to use Open95Keygen on Mac OS X 10.7+ or some other operating system, please compile Open95Keygen from source.
First, download the right release for your operating system, or compile Open95Keygen from source.
This is a command line program, so on Windows you first must open the command.com or cmd.exe program. Then just drag o95kg.exe into the command.com or cmd.exe window and press the enter or return key.
On Mac OS 8, Mac OS 9, or Mac OS X just double click the o95kg file.
On Linux, you may be able to just double click the o95kg file to start Open95Keygen. If this does not work, start your terminal program and execute o95kg.
On Windows 95/NT 4.0, if you see the word OEM in between where you enter the Product Key, use the generated OEM Product Key. If you do not see the word OEM when asked to enter a Product Key, use the generated Retail Product Key.
Version 1.0 - 2/7/2021
- First release.
This software is written to run on any ANSI-C platform. Really, this software is as easy to compile as gcc o95kg.c -o o95kg. A GNU Makefile is provided in the source download (N/A to classic Mac OS 8-9, you'll need to generate your own build commands with Macintosh Programmer's Workshop) that will do just that by default, when executing make. There are some additional rules to make various tasks easier to accomplish, which are listed below.
Compile for Mac OS X 10.3.9+ PowerPC.
make mac-ppc
Compile a static 32 bit Linux build.
make linux-static32
Compile a static 64 bit Linux build.
make linux-static64
Cross compile using the i686-w64-mingw32-gcc compiler for Windows 95 and above (requires Internet Explorer 4.0 to be installed if running on Windows 95).
make cross-win32
This license is distributed with Open95Keygen.
BSD 3-Clause LicenseCopyright (c) 2021, Alex Free All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.