What is F-Droid?
The F-Droid Repository is an easily-installable catalogue of free and open source apps for Android. With F-Droid, it's easy to browse and install apps on your device, and keep track of updates. You can also browse the repository with a web browser, and download the app directly from there, if you can’t or don’t want to run the F-Droid client on your device.
All applications in the default repository must be Free and Open Source software – for example, released under a GPL or Apache license. Every effort is made to verify that this is actually the case, both by visual inspection of the source, and by building the application from the published source.
Software that reports user activity without permission (e.g. via Google Analytics) or tracks user behaviour (e.g. most advertising platforms) is specifically excluded from FDroid’s own repository, as is software with the primary purpose of interacting with a non-Free network service. You are, of course, free to set up your own repository for this kind of software – the server source is available, and the client will allow addition or removal of repositories as you see fit.
F-Droid originated as a fork of Aptoide. F-Droid can be installed from its website or from within Aptoide, but it is not available for download in Google Market.