Librera Reader is a free open source eBook reader Android app. You can also check out lists of best free EPUB to MOBI Apps, STL Viewer Apps, and EPUB to Kindle App for Android. Plus, it also offers multiple reading modes to facilitate all types of users. Librera Reader is my favorite app because it lets you read both locally stored and online eBooks. My Favorite Open Source EBook Reader Android App: Go through the list to know more about these apps. Besides this, you can also find additional tools through which you can read online eBooks, download eBooks, synchronize eBooks, etc. In some apps, you also get an advanced text to speech feature to listen to eBooks like an audiobook. I also like search (to search eBooks) and dictionary (to find the meaning of words) features provided by some apps. In some app, you also get a dedicated dark or night mode to read eBooks in a low-light environment. On the other hand, reading modes adjust the color profile and page settings (single page view, two-page view, etc. Through page navigation tools, you can either navigate to previous and next pages or directly jump to a specific page.

To give users a good reading environment, these apps offer easy to use page navigation and reading modes.

Besides eBooks, you can also read documents (HTML, DOC, RTF, etc.) in most apps. In most apps, you can easily read eBooks of multiple formats like EPUB, MOBI, PRC, AZW3, FB2, and more. Unlike standard apps, all these apps are open source, thus their users can download and edit source codes of these apps without any restriction. These apps are similar to standard eBook reader apps in which you can easily read eBooks of various formats. Here is a list of best free open source eBook reader Android apps.

Epub file reader for android