quadplay is described as 'The quadplay fantasy console bundles an emulator and advanced development tools including an adept IDE and tools for use with other IDEs like VS Code, Vim and Emacs' and is a Game Development Tool in the Development category. There are more than 10 alternatives to quadplay for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Android. The best alternative is TIC-80, which is both free and Open Source. Other great apps like quadplay are PICO-8 (Paid), Voxatron (Paid), Bitsy (Free) and Pixel Vision 8 (Paid).
Voxatron is a fantasy console system where games are made out of voxels and made available to the system as traditional cartridges that can be made from scratch through a built-in designer or remixed from other shared creations.
Pixel Vision 8 is a platform that standardizes 8-bit fantasy console limitations built on top of an open source C# SDK. Developers can customize these restrictions to match actual legacy hardware or create something new. It is ideal for game jams, prototyping ideas or having fun.
BASIC8 is an integrated Fantasy Computer. Create, share and play disks in a modern BASIC dialect. Use built-in tools like sprite, tile and map editor to develop games fast while having fun with retro aesthetics.
LowRes NX is a simulated retro game console which can be programmed in the classic BASIC language. Make your own retro games on a virtual game console. Create sprites, tile maps, sound and music with the included tools.
VectorBoy is a fantasy console that can be used to play your own games written in the LUA scripting language. Unlike other systems of its kind, it doesn't use pixels to display graphics. Instead, the screen displays straight lines to form graphics of all kinds.