Ungoogled Chromium is is essentially a drop-in replacement for Chromium sans dependency on Google web services. It retains the default Chromium experience as closely as possible but also features some tweaks to enhance privacy, control, and transparency (almost all of which require manual activation or enabling).

What are the main differences between Google Chrome and Ungoogled Chromium?

Ungoogled Chromium removes many services that the regular Chrome browser uses that rely on Google and usually track your usage. Even Google's Safe Browsing is disabled to avoid communication with the company. However, if you want a similar kind of protection you can use extensions such as uBlock Origin. As long as you (take the time to customize it) learn how to use it properly, you can enjoy a Chrome-like browser without the privacy implications. Read more.