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Linux/GNU
The Linux kernel was created by Linus Torvalds, which was inspired by the MINIX project. On the other hand, GNU had been developed some time before in 1983 by Richard Stallman, whose purpose was to have a completely free operating system, so that all source code could be freely used, modified and redistributed by anyone. -
SLS Linux 1.5
The first linux distribution that was widely distributed was developed by Peter MacDonald. For the first time GNU tools were integrated and using the Linux kernel, it also had a graphical environment that made it attractive to advanced users. -
Slackware 10.2
Developed by Patrick Volkerding, with the purpose of being a better version in comparison with SLS, so, it had a simpler, cleaner and more faithful distribution to the UNIX design. This version was recognized for its focus on stability and total control of the system by the user. -
Debian GNU/Linux
Developed by Ian Murdock, in order to be a community project that could create a high quality and democratically maintained Linux distribution. Mainly an advanced “.deb” package system was introduced, as well as the APT package manager. This version was a fundamental part for the creation of future distributions.