The latest TestShell builds can be found here: http://securityandthe.net/wp-content/uploads/chromium_mac/.
The most up to date build at the time of this posting was 17-Jan-09, available by clicking here.
Although due to the huge dearth of functionality to which nearly every user of finished Web browsers are accustomed to, TestShell is absolutely not a replacement for such production browsers.
However, it does deliver absolutely incredible levels of speed and is even surprisingly stable….though given its very early state of beta testing and highly developmental nature, some crashes are to be expected and quite simply come with the territory. Read more