Chromium may look just like Chrome with a different icon and, for the most part, it is, but it's more geared towards "power users" and for open-source projects. The most significant differences are Chromium being less annoying with warnings (when using custom extensions for instance), it doesn't silently install any auto updaters and it has fewer user tracking features (no RLZ). And of course, you can modify it, but the codebase is so huge and complicated, it's most likely not worth it.
If you'd like to try it, I highly recommend downloading an unofficial build with all the auvio/video codecs built in from here: chromium.woolyss.com
I am using ubuntu 64bit (on my desktop) and 32bit (on my old laptop) and chromium works perfectly. With the package adobe-flashplugin flash works even at my 32bit system (really important since google stopped 32bit builds). It comes with chromium pdf reader plugin enabled by default (at least on ubuntu, I'm not sure about other distros). There is also the package chromium-codecs-ffmpeg-extra on Ubuntu for restricted codecs support (I'm guessing something similar will exist on other distros), so you have all the functionality that chrome has with the benefits of being an opensource project!!!
Google will limit the capability of adblock extensions drastically especially for uBlock Origin with their manifest v3 which includes radical changes like 30k filter limit and disabling dynamic filters.I will not recommend it anymore, it became an evil and and starting to become a considerable threat to open source world and security within privacy of users.
Firefox, Opera, Vivaldi, Brave and so much alternatives have all same feature sets and maybe even more. Like better developer tools and better extension support in Firefox, VPN and Turbo support in Opera, better theme customization in Vivaldi etc.
Google Chrome have become just a habit for most of users but its abilities are not greater than alternatives. They rely on it just like Internet Explorer relied it years ago.
Chromium is the basis for many browsers, including Chrome. However, since Google cut off sync support for all browsers but Chrome, this browser has become useless to me.
Less bugs than Firefox.
A good project, I use this to watch youtube
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