The best alternatives to Devpost are Epic Games, Paradiddle, and Amplitude. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Devpost?
AssemblyAI— Speech-to-Text API with superhuman accuracy
A curated digital storefront for PC and Mac, designed with both players and creators in mind. Focusing on great games and a fair deal for game developers.
Paradiddle lets you play drums in VR without the limitations of the real world. Available for the @OculusRift, @htcvive and WMR headsets on Steam Early Access.
Paradiddle lets you explore your percussion skills freely in a flexible and responsive VR environment. Out now on Early Access on Steam, & soon the Oculus Store!