Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Tinfoil for Facebook - Download Tinfoil for Facebook app for Android. Tinfoil for Facebook is for those users that require a Tinfoil hat. .
Invision - Prototyping and collaboration for design teams
Frost for Facebook - Frost is a third party Facebook wrapper geared towards design and functionality
Sketch - Professional digital design for Mac.
Friendly for Facebook - Friendly is the most complete Facebook Lite and FB Messenger alternative.