Free Software for UNIX
Lynx
Lynx is a customizable text-based web browser for use on cursor-addressable character cell terminals. The Lynx browser is avalible for UINX, MacOS, VMS, Windows 95/98/NT, DOS386+. As of 2020, Lynx is the oldest web browser still being maintained, having started in 1992.
CentOS
The CentOS Linux distribution is a stable, predictable, manageable and reproducible platform derived from the sources of Red Hat Enterprise Linux (RHEL). The operating system is built with community-driven efforts and is released free and open-source under the GPLv2. Since March 2004, CentOS has been used to power servers and desktops across the world, and the project is still going strong to this day.
FreeBSD
FreeBSD is a free and open-source Unix-like operating system descended from the Berkeley Software Distribution. FreeBSD was first released as in 1993, and is today the most popular free and open-source BSD operating system on the market today. In total, FreeBSD accounts for more than 75% of the market. FreeBSD can be installed easily on most machines and is licensed under the permissive BSD License.
GNOME Web
GNOME Web or codename: Epiphany is a free and open-source web browser based on the WebKit rendering engine. The web browser is developed openly by the GNOME Project and the community for all Unix-like systems. GNOME Web is the official web browser of the Linux desktop environment GNOME.
Wine
Wine is a free and open-source compatibility layer that aims to allow application software and computer games developed for Microsoft Windows to run on Unix-like operating systems, such as Linux, macOS, & BSD. Wine began in 1993 under the initial coordination of Bob Amstadt as a way to support running Windows 3.1 programs on Linux. To this day, Wine makes it easy to wrap and install Windows games and software for your favorite Unix system.