Use Selenium with Chromium Browser

On unix systems, you can do something like

sudo ln -s /usr/lib/chromium-browser/chromium-browser /usr/bin/google-chrome

and then you can use "*googlechrome" as the lauch parm when creating your DefaultSelenium instance.

Yes. For Chromium use:

DefaultSelenium selenium = new DefaultSelenium("localhost", 4444, "*custom path/to/chromium" , "www.google.com");
selenium.start();

The other options that you can use are *custom, *chrome(note: this is not Google chrome, its a firefox mode only), *googlechrome, *iexplore. Please check selenium documentation for complete list of the modes.

EDIT: Changed googlechrome to chromium

Uh, the accepted answer doesn't answer the question. Google Chrome is based on Chromium, but they're not the same browser.

This is what you want: (since Chromium isn't officially supported)

DefaultSelenium selenium = new DefaultSelenium("localhost", 4444, "*custom C:/path/to/chromium.exe" , "www.google.com");
selenium.start();

Edit 2018-08: Looks like the accepted answer changed to a copy of this one several years later, so my original comment is no longer correct. I'm leaving it there, but struck out, because the votes are misleading if I straight remove it.

(Python)

You can use chromium-chromedriver instead of the vanilla chromedriver. It can be installed via apt-get like "sudo apt-get install chromium-chromedriver"

In my scripts I then configure the chromebrowser and driver to use the chromium exe and chromedriver exe like:

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = Options()
options.BinaryLocation = "/usr/bin/chromium-browser"

driver = webdriver.Chrome(executable_path="/usr/bin/chromedriver",options=options)
driver.get("https://www.google.com")