30 open-source projects similar to servicestack/servicestack, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
Encore is a distributed systems framework designed to unify backend development, infrastructure provisioning, and observability. It functions as an infrastructure-as-code platform that allows developers to define cloud resources, databases, and messaging topics directly within their application code. By analyzing these declarations at compile-time, the system automatically manages the deployment of cloud resources and security policies, ensuring parity between local development and production environments. The platform distinguishes itself through its integrated development experience, which
Trailbase is a backend-as-a-service platform delivered as a single executable that integrates a realtime database engine, an identity and access manager, and a type-safe API generator. It provides a comprehensive backend environment including a SQLite-backed storage engine and a WebAssembly runtime server for executing custom logic. The platform distinguishes itself by automatically transforming database schemas into JSON APIs with cross-language client bindings and by allowing the execution of portable components for server-side rendering and custom HTTP routes. It further incorporates vecto
orpc is a contract-first API development framework for TypeScript that starts with a shared contract definition and generates type-safe clients and servers from that single source of truth. It guarantees end-to-end type safety, meaning inputs, outputs, errors, and streaming data are all checked at compile time across the client–server boundary. What distinguishes orpc from typical RPC frameworks is its ability to export contracts as OpenAPI specifications, to optimize server-side rendering by calling API handlers directly inside the server process, and to support real‑time bidirectional commu
NSwag is an OpenAPI toolchain for .NET that provides a suite of generators for converting OpenAPI specifications and JSON schemas into clients, server stubs, and structured documentation. It enables the creation of type-safe client libraries and data transfer objects, as well as the generation of OpenAPI specifications by analyzing .NET controllers. The project supports contract-first API development by generating server controller stubs from specifications and offers dedicated TypeScript API integration to ensure type safety in frontend applications. It also provides tools for hosting intera
Hanko is an open-source identity provider and customer identity and access management system. It serves as a passkey authentication service and an OAuth and SAML SSO gateway, allowing applications to authenticate users and issue tokens via standard identity protocols. The project distinguishes itself through a strong focus on passwordless access using WebAuthn-based passkeys and email-based passcodes. It provides framework-agnostic authentication interfaces as customizable web components that can be embedded directly into web applications to handle login, registration, and profile management.
This project is a comprehensive library of reference implementations and patterns for building web applications using the Go Fiber framework. It provides curated templates and implementation guides for creating REST APIs, web servers, and structured backend services. The repository serves as a practical resource for applying architectural patterns, including Clean and Hexagonal architectures, as well as port-and-adapter decoupling. It offers detailed examples for integrating common web features such as OAuth2 authentication, JWT verification, WebSockets for real-time communication, and server
Moya is a network abstraction layer for Swift that provides a structured framework for defining and executing REST API requests. It functions as a type-safe API client that decouples network endpoint definitions from the underlying implementation details to prevent configuration errors and URL typos. The project distinguishes itself by using protocol-based endpoint definitions and a provider-coordinated execution model. It includes a system for mapping network responses to strongly typed objects and features a dedicated tool for generating type-safe network interface files from external REST
This project is a cloud-native identity and access management platform designed to centralize authentication, authorization, and identity lifecycle management. It functions as a standards-compliant OpenID Connect authorization server, providing secure session management and token issuance for web, mobile, and device-based applications. The platform is built to handle complex identity requirements through stateless token authentication and support for modern passwordless methods, including biometrics and hardware keys. What distinguishes this platform is its native support for multi-tenant env
Elysia is a high-performance TypeScript web framework designed for building type-safe backend services. It provides a modular, plugin-based architecture that allows developers to compose server logic, middleware, and validation schemas into scalable application instances. By leveraging native web standards, the framework ensures portability across diverse JavaScript runtimes, including Node.js, Deno, and various edge computing environments. The framework distinguishes itself through its focus on end-to-end type safety, automatically synchronizing request and response definitions between the s
Authentik is a centralized identity and access management platform designed to serve as a unified authentication authority. It enables enterprise single sign-on across diverse applications and services, providing a cloud-native identity provider that manages user sessions and security protocols from a single location. The platform distinguishes itself through a policy-driven flow engine and a visual orchestration interface. This allows administrators to design complex, custom authentication workflows by chaining modular verification stages and conditional logic. These workflows can be further
Refit is a type-safe REST client for .NET that transforms API definitions into live interfaces. It functions as an automatic API proxy generator, allowing developers to define endpoints as interfaces to eliminate manual HTTP request boilerplate. The library is designed for compatibility with ahead-of-time compilation and trimmed binaries, utilizing build-time source generation to ensure support for native AoT deployments. The project covers a broad range of API integration capabilities, including attribute-driven request composition, automatic JSON deserialization, and request header managem
openapi-ts is a tool and orchestrator used to convert OpenAPI specifications into type-safe TypeScript SDKs and HTTP client implementations. It automatically generates typed interfaces and request functions from API definitions to ensure consistency between the server and the client. The project employs a transport-agnostic client interface, decoupling high-level API calls from the underlying network library. It uses a plugin-based generation pipeline and a custom plugin architecture to allow for the customization of output types and validation schemas. The system provides capabilities for n
Spring Cloud Gateway is an API gateway and routing service built on Spring Boot. It acts as a central entry point for microservices, directing incoming HTTP traffic to downstream services using a combination of predicates and filters. The project is a non-blocking request router that leverages Netty and Project Reactor to handle high-concurrency traffic via asynchronous data streams. It functions as a dynamic request router and network traffic filter, allowing for the automated detection of and routing to available service instances in dynamic network environments. The gateway manages micros
Orval is an OpenAPI-to-TypeScript code generator that produces fully typed API clients, data-fetching hooks, mock data, validation schemas, and server handlers from OpenAPI or Swagger specifications. It reads any YAML or JSON API specification and generates TypeScript interfaces, HTTP request functions, and framework-specific integration code that ensures compile-time correctness for all API calls. The project distinguishes itself by generating production-ready data-fetching hooks for React Query, Vue Query, Svelte Query, Solid Query, Angular, and SWR, complete with automatic cache invalidati
This project serves as a comprehensive reference architecture and a guide to best practices for developing scalable applications with the Spring Boot framework. It provides a structural blueprint for Java backend development, focusing on the implementation of decoupled APIs and the establishment of architectural standards. The project specifically details the creation of custom starters and auto-configuration modules to simplify the integration of third-party libraries. It also provides a deployment blueprint for packaging applications as executable jars and optimizing layered builds for cont
Connect-go is a library for building type-safe remote procedure call services that are wire-compatible with gRPC and HTTP. It provides a Go implementation of Protocol Buffers for structured data exchange, enabling the creation of multi-protocol RPC servers and generated type-safe clients. The framework is distinguished by its polyglot protocol support, allowing a single server handler to serve requests using several different protocols simultaneously over HTTP. This includes the ability to toggle between different transport protocols for the same service and the use of pluggable content negot
Moleculer is a Node.js microservices framework designed for building distributed systems. It functions as a distributed service broker, task orchestrator, and service mesh framework, enabling a decentralized architecture with built-in service discovery and load balancing. The project differentiates itself through a pluggable transport layer supporting protocols such as NATS, Redis, TCP, and Kafka, as well as a dedicated microservices API gateway that maps external HTTP and WebSocket requests to internal service actions. It includes built-in fault tolerance mechanisms, including circuit breake
Openapi-typescript-codegen is a code generation tool that parses OpenAPI specification files, URLs, or strings to build type-safe TypeScript or JavaScript network clients. It transforms raw API definitions into structured internal abstract syntax trees before mapping them onto custom text templates. The tool provides a pluggable network layer that supports interchangeable transport libraries such as Fetch or Axios. It normalizes diverse endpoint structures into a unified internal schema to generate strongly typed client source code. Execution occurs synchronously through command line argumen
Easegress is a cloud-native traffic orchestration platform that functions as a multi-protocol API gateway and service mesh proxy. It routes, transforms, and orchestrates HTTP and MQTT traffic through configurable filter chains, providing high availability, security controls, and resilience for backend services. The platform integrates with service discovery systems like Kubernetes, Consul, and Eureka to dynamically route traffic to discovered services with automatic failover and health monitoring. The system distinguishes itself through a pipeline-based filter chain architecture where request
bknd is a self-hosted backend-as-a-service platform and serverless backend framework that provides an integrated environment for managing databases, authentication, and file storage. It functions as a headless CMS and a portable API engine designed to run across various JavaScript runtimes, including Node.js, Bun, Cloudflare Workers, and AWS Lambda. The project distinguishes itself through a combination of schema-driven API generation and a built-in database management UI. It enables the definition of data structures either programmatically via a type-safe API or visually through an administr
tsoa is a TypeScript API framework that synchronizes server routing, request validation, and API documentation through the static analysis of typed controllers. It functions as a Node server route generator and an OpenAPI REST API generator, converting TypeScript models and controllers into routing configurations and API specifications. The project differentiates itself by using static type analysis to extract metadata from source code without executing it. This metadata is used to synthesize OpenAPI specifications and generate JSON schemas for structural validation of request payloads. The
Litestar is a high-performance Python ASGI web framework designed for building asynchronous APIs and web services. It functions as a type-safe toolkit that leverages Python type hints to provide automatic request validation and response serialization, while natively generating interactive API documentation based on the OpenAPI specification. The framework is distinguished by its integrated dependency injection system, which manages shared resources and resolves complex nested service chains directly within request handlers. It further organizes API development through class-based controllers
Kratos is a centralized identity and access management server designed to handle user registration, authentication, and profile management. It functions as an identity flow orchestrator, managing the state and security of authentication processes across web, mobile, and command-line interfaces. The system provides a standards-compliant authorization server that issues tokens and manages delegated access for third-party applications and internal services, supporting multi-factor authentication and custom identity schemas to secure user accounts. The project distinguishes itself through a headl
NATS Server is a high-performance, lightweight messaging system designed for cloud-native applications, edge computing, and distributed microservices. It functions as a distributed publish-subscribe broker that routes messages using hierarchical, dot-separated subject strings, enabling decoupled communication between services without requiring centralized broker lookups. The system supports core messaging patterns including asynchronous publish-subscribe, request-reply, and load-balanced queue processing. The platform distinguishes itself through a decentralized architecture that eliminates t
mcp-context-forge is a Model Context Protocol federation gateway that unifies diverse AI tool servers and APIs into a single consistent interface for discovery and execution. It acts as a centralized proxy that aggregates multiple servers and APIs, allowing AI agents to access and invoke a unified set of tools, prompts, and resources. The project distinguishes itself through a multi-protocol translation bridge that converts communication between standard I/O, SSE, gRPC, and REST to enable interoperability between disparate tool servers. It includes a comprehensive LLM evaluation framework for
rxhttp is a communication layer and network library for Android applications that wraps OkHttp to provide an asynchronous HTTP client. It functions as a type-safe API client that manages network requests and automates the conversion of responses into structured objects. The library features a compile-time code generation tool to produce type-safe request boilerplate and an interceptor framework for applying global encryption, decryption, and custom headers to network traffic. It supports non-blocking communication using Kotlin Coroutines and RxJava. The project covers a broad range of networ
RAML is a declarative YAML-based specification language used for modeling RESTful interfaces and data structures. It functions as a contract-first API framework and modeling standard, establishing a formal agreement for service communication and a single source of truth before implementation begins. The specification enables the automation of functional mock servers and the generation of language-specific client SDKs directly from the definition files. It supports a modular approach to API design through the use of external libraries, overlays for extending contracts, and reusable traits and
Typia is a compile-time code generator that transforms TypeScript type annotations into runtime validation, serialization, and schema functions without requiring decorators or separate schema files. It generates optimized validation and serialization code during TypeScript compilation, producing dedicated functions for each type that eliminate runtime schema objects for faster execution. The project extends this core capability into several integrated areas. It generates fully typed client SDKs from NestJS controller source code, keeping server and client types synchronized automatically. It
This project is a set of hands-on labs for practicing cloud development, focusing on implementing web apps, functions, storage solutions, and containerized workloads. It provides a practical framework for developing solutions within the Azure ecosystem. The content covers a wide range of specialized cloud capabilities, including serverless development with HTTP and timer triggers, container orchestration using apps and instances, and API management for routing and transforming traffic. It also emphasizes identity and access management through OpenID Connect and managed identities. Additional
Twirp is a Protocol Buffers RPC framework designed for implementing type-safe, distributed microservices communication over HTTP. It functions as a microservices communication framework and API code generator that produces strongly typed client stubs and server interfaces from schema definitions to eliminate manual network boilerplate. The framework ensures compatibility with existing web infrastructure by executing remote procedure calls over standard HTTP transport. It uses schema-driven contracts as a single source of truth to enable cross-language interoperability and decouple business lo