Open source
Vapor
Server-side Swift framework for APIs, backends and websites
Backend FrameworksServer-side Swift framework
Alternatives to Ktor
12 tools like Ktor, chosen by what they do. About Ktor
Open source
Koa
Small Node.js web framework that uses async middleware
Backend FrameworksNext-gen Node web framework
Open source
Play Framework
Java and Scala web framework with a stateless, async design
Backend FrameworksScala and Java web framework
Open source
Open source
Sinatra
Lightweight Ruby framework for building web apps and APIs
Backend FrameworksTiny Ruby DSL framework
Open source
Actix Web
Pragmatic, fast Rust web framework with typed extractors
Backend FrameworksPowerful Rust web framework
Open source
Micronaut
JVM microservice framework with compile-time dependency injection
Backend FrameworksJVM microservice framework
Open source
ASP.NET Core
Open source web framework for C# apps, APIs and interactive pages
Backend FrameworksMicrosoft's web framework
Open source
Elysia
TypeScript framework for Bun with end-to-end type safety
Backend FrameworksErgonomic Bun framework
Open source
Flask
Lightweight Python WSGI framework for web apps and APIs
Backend FrameworksLightweight Python framework
Open source
Open source
Fastify
Fast Node.js web framework with schema validation and plugins
Backend FrameworksFast low-overhead Node server