Retaxis is described as 'powerful ecommerce software solution that can help both Single brand business as well as Multivendor Marketplace solution providers with an option to be able to manage their online selling processes with ease'. There are five alternatives to Retaxis for Online / Web-based and Self-Hosted solutions. The best alternative is Sharetribe. It's not free, so if you're looking for a free alternative, you could try MarketplaceKit. Other great apps like Retaxis are Arcadier Marketplaces (Paid), Marketinf (Paid) and Online Marketplace Software by Rademade (Paid).
Allowing people to quickly open an online marketplace like Airbnb, Etsy or Themeforest. Without any coding required, Marketinf allows people to create a marketplace for products, services and digital goods.