InfoWorld's top picks for the most indispensable open source software of all time
9. OpenSSH and OpenSSL
OpenSSH and OpenSSL bring indispensable tools for secure Internet communications to the world of free and open source. OpenSSH encrypts shell communications to remote computers, addressing the shortcomings in tools such as rlogin and telnet, which send usernames and passwords in clear text. OpenSSL is a software library that allows developers to incorporate SSL or TLS into their Internet applications.