There is no native Linux and Mac versions of Chromium available but codeweavers released version for Mac OS X and Linux. From the project page:
Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all Internet users to experience the web. The Chromium codebase is the basis for Google’s Chrome browser.
This is just a proof of concept and you should wait for native version. This good if you would like to test new browser.
Download Google Chrome for Linux / Mac OS X
WordPress 2.6 has been released and available for download almost a month ahead schedule. New
features in wordpress 2.6:
=> Wiki-like tracking of edits
=> Post from wherever you are on the web
=> Turbo-speed your blogging - Gears is an open source browser extension project started by Google that developers like us can use to give you features we wouldn’t normally be able to.
=> SSL login support
=> Theme Previews: See it before your audience does and much more
Download WordPress 2.6
=> Visit official download page.
Related: Upgrade wordpress quickly in 3 easy steps from UNIX shell prompt