Google has added a new release channel for its Chrome browser called as Chrome Canary. You can now install & run two Google Chrome builds side by side.
To do so, first install one of Google Chrome stable/beta/dev releases as usual.
Having done this, next install Google Chrome Canary build (Windows operating system only for now) which will be installed to different path, get updated separately, and run side by side with existing regular Chrome installation.
In usual situation, the canary build will be same as dev build. Sometimes if necessary, we may push additional update on canary build so its version is higher than developer build.
If you are doing development/test for Chromium project or interesting in getting involved, Google recommends you install Google Chrome Canary build and use it on daily basis.
Download Page: Google Chrome Canary Build.
You can easily uninstall it via the Control Panel.