Spacy Browser was originally developed by RMN (aka Ricky Martin's Network). With simple and intuitive design at heart its licensed with an official Apache 2.0 open source Android project license, which is nice.
Plus now you can fully customize your browser, by simply tapping on your default theme. As Spacy Browser is based on clean, open source design (albeit, without lacking in features) -- now you'll retain almost full control when it comes to customizing your browser and mixing up your default theme.
That said, it is based on Mozilla Firefox, includes an ad-blocker (which is disabled by default), and has options to import your bookmarks and set up your homepage.
As a relatively lightweight app, these features are bundled in as little space as possible.
Requirements (Latest version)
- Android 4.0, 4.0.1, 4.0.2 or higher required
3 reviews 
Comments
This is undoubtedly one of, if not the best browser for android devices.
Of the browsers that I have used so far, this is the most faithful with the advertising block and also goes fast in the search and open the web. I see it better than chrome or firefox.