1Flow vs Opal
A side-by-side look at 1Flow and Opal. For an in-depth review of either product, follow the links below.
1Flow
News & Books
1Flow is a free and open-source feed reader app for Android. It allows you to subscribe to RSS feeds, organize them into categories, and read articles in a clean, ad-free interface.
rssfeed-readeropen-source
Opal
Office & Productivity
Opal is an open-source alternative to Microsoft OneNote for taking notes and organizing information. It allows users to create digital notebooks to capture text, drawings, and web clippings.
notesorganizationopensource