QAOP lets you play ZX Spectrum games right through your browser. Choose from a large selection of classic games or select 'Open' from the emulator's menu system to load a game from your computer.
Spectral Alternatives
Spectral is described as 'Experimental Sinclair ZX Spectrum emulator from the 80s, which has been randomly assembled since the pandemic days. Accuracy and performance are long-term goals, but the primary focus is just having fun with this thing' and is a Game Emulator in the gaming software category. There are more than 25 alternatives to Spectral for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best Spectral alternative is RetroArch, which is both free and Open Source. Other great apps like Spectral are DuckStation, Lemuroid, Super ZSNES and Snes9x.