@Akash614 if you need a definitive answer you would need to give more specific details. @UFD is quite correct, the main issue would be that of capacity. The Pi has more RAM and a faster CPU, but if you don't require these then the Omega may well be suitable. From your initial question: Onion has UARTs available Onion can run a database (I use SQLite3 on an sdcard) You can run a web server, in fact I run 2 different web servers on my devices So it comes down to capacity and performance.