Supabase
Supabase is an open-source backend platform built around a real PostgreSQL database, with managed hosting for teams that want to build applications without operating every backend service themselves.
Appwrite
Appwrite is an open-source development platform that brings application backends and hosting into one toolkit. It is designed for web, mobile and server applications that need common infrastructure without assembling a separate vendor for every capability.
BuildShip
BuildShip is an AI-assisted visual backend builder for creating APIs, automations and agent workflows. It combines editable workflow diagrams with code access, so teams can connect services without giving up custom logic.
Convex
Convex is a reactive database and backend platform for real-time, collaborative and AI-enabled applications. Queries and mutations are TypeScript or JavaScript functions, with subscribed clients updated when data changes.
Firebase
Firebase is Google's application-development platform for web and mobile teams. It combines managed backend services with release, analytics and engagement tools, reducing the infrastructure developers need to operate themselves.