OpenSSH is a free version of the SSH connectivity tools that technical users rely on. Free • 55 alternatives • 335 likes
Apache, is a web server notable for playing a key role in the initial growth of the World Wide Web and in 2009 became the first web server to surpass the 100 million web site... Free • 48 alternatives • 438 likes
QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that performs hardware virtualization. Free • 38 alternatives • 213 likes