Opera

Opera is a light-weight but fully featured web browser available for multiple platforms including: GNU/Linux, MacOS, Microsoft Windows, QNX, FreeBSD, Solaris, and BeOS. It features tabbed browsing, integrated pop-up blocking, advanced cookie management, support for Netscape plug-ins, Java, etc. Although it is not open source like Mozilla, Opera has an excellent track record for security and support.

= External links =
 * Opera official website
 * Opera screenshots
 * Opera Watch: The Unofficial Opera Blog