[Disclaimer: I'm a really bad builder, but I'm good at scripting and decent at UI design.]

1. Admin commands (these will be finished soon, and will be open source with a feature-packed API for developers to create plugins with)
https://www.roblox.com/library/3131187278/AdminCommands

2. Beyond Illusions (A game that I'm currently rescripting; That's why it says 'Closed')
https://www.roblox.com/games/2243079939/Beyond-Illusions-Pre-Alpha

3. Audio visualizer
https://www.roblox.com/games/3111685001/Audio-Visualizer

4. Sub count (T-Series VS PewDiePie)
https://www.roblox.com/games/2928066353/Sub-count-Pewdiepie-VS-T-Series