Opera said its browser was popular with Linux users and that the release of Opera 6.1 would offer enhanced font support, Java support without using a plug-in, and improved bookmark handling.
The company said that it had received more than 1.5 million downloads from Linux users since February 2001 and was anticipating a quick take-up for the new offering.
Furthermore, the addition of the FreeBSD port makes Opera available on eight different operating systems. FreeBSD is a Berkeley Software Distribution operating system popular with high-end users such as systems administrators.
The pairing of Opera with FreeBSD is expected to entice corporate users with an emphasis on stability.
Opera is now available on Windows, Linux, Mac, Solaris, FreeBSD, OS/2, Symbian OS and QNX.