Frost for Facebook - Frost is a third party Facebook wrapper geared towards design and functionality
Friendica - Decentralisation - Privacy - Interoperability
Tinfoil for Facebook - Download Tinfoil for Facebook app for Android. Tinfoil for Facebook is for those users that require a Tinfoil hat. .
Gab - Gab is an ad-free social network dedicated to free speech.
Friendly for Facebook - Friendly is the most complete Facebook Lite and FB Messenger alternative.
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!