Apple - Chromium builds for Mac OS X

Currently recommended method (05-2017):

• Install HomeBrew
• brew tap domt4/chromium
• brew cask install mac-chromium
• brew tap buo/cask-upgrade (click here for cask-upgrade info/source)

To upgrade Chromium, run:

• brew cu

or

• brew cu -y -a

This was the original posted answer:

• Install HomeBrew
• Install HomeBrew Casks: brew install caskroom/cask/brew-cask <- this is now obsolete
• Install Chromium: brew cask install chromium

Or, an alternative

is this method which uses this script, and has a more up to date version as the one above (and also verifies the Chromium checksum), and provides updates:

• Install HomeBrew
• brew tap domt4/chromium
• brew install domt4/chromium/chromium
• brew linkapps chromium

updating is as simple as:

• brew update; brew upgrade

If you want to automatically upgrade daily in the background you can use this (note that this also upgrades your other HomeBrew packages if you have any):

• brew tap domt4/autoupdate
• brew autoupdate --start --upgrade

The Chromium Project¹ does not seem to provide compiled builds for the OS X or Windows platform. If you run Ubuntu, you can use the Software Center to install Chromium just like you would with the Mac App Store.

Therefore, under OS X you would have to download the source code and build the application yourself which requires the use of the free Development Software Xcode².

You can follow the official Mac build instructions to help you get started:

https://chromium.googlesource.com/chromium/src/+/master/docs/mac_build_instructions.md

Ewh! I don't want to go through all this trouble...

The Free OpenSource Mac User Group hosts a site that has the latest³ compiled build. According to their website:

1. ...the download is compiled following the official Mac Build Instructions (link above).
2. ...they integrated the Sparkle⁴ update framework to offer a simple update procedure since Chromium does not have the auto-update feature of Google Chrome.

Their download is a simple .dmg which you install via drag-and-drop, just like Chrome.

While they do provide a MD5 hash, the Chromium Project does not provide MD5 hashes of the compiled builds. So you have to trust this website's integrity when using their downloads.

Other than no auto-update integration, Chromium has some more differences from Google Chrome which you can read in the following Wikipedia article on Chromium (web browser).

Stable build from FreeSMUG (Free Software Mac User Group are here: http://www.freesmug.org/chromium