Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
Retro Virtual Machine - The ZX Spectrum and Amstrad CPC emulator which works natively in macOS, Linux, and Windows.
Dropsource - Mobile development platform for building native iOS & Android apps
JSSpeccy - ZX Spectrum emulator in JavaScript
GoodBarber - GoodBarber is a mobile app creation platform.
Speccy emulator - Sinclair ZX Spectrum emulator