Bonus

• It's All Widgets! - Open list of published apps by Hillel Coren, Thomas Burkhart, Simon Lightfoot and Scott Stoll.
• Awesome Flutter Linux - A curated list of awesome Linux-specific Flutter packages and projects by J-P Nurmi.

Fun

• The One [444👍]

Hardware

• Matrix2 - Sense Hat's LED matrix control game by bus710.

Guide & Interviews

• Interview Questions - List of helpful questions you can use to interview potential candidates by Whatsupcoders.
• The International Flutter Starter Kit - Guide by the experts by Beyza Sunay Guler & Nawal Alhamwi.