Open-source alternatives to Json Api

This project is a formal RFC proposal and technical specification for a new range of HTTP status codes. It defines a developer error standard designed to distinguish implementation failures from standard client or server errors within REST API responses. The specification proposes an extension to the HTTP protocol that introduces reserved numerical ranges for status codes. This system maps unique integer identifiers to specific implementation mistakes, providing precise diagnostic meaning and isolating developer fouls from standard protocol responses while maintaining backward compatibility.

CodeIgniter is a PHP web framework built on the Model-View-Controller pattern, designed for building full-stack web applications. It provides a lightweight toolkit with minimal configuration, organizing application logic into controllers, models, and views for clean separation of concerns. The framework includes a fluent query builder for constructing SQL statements programmatically, PSR-4 autoloading with namespace mapping, and a service-based dependency injection container for managing shared class instances. The framework distinguishes itself through its comprehensive set of built-in tools

This project is an Eloquent query builder wrapper and REST API query parser for Laravel applications. It translates HTTP request parameters into database queries to provide dynamic filtering, sorting, and relationship loading for API endpoints. The system decouples the external API interface from the storage layer through alias-based schema abstraction, allowing public field names to map to private database columns. It supports the dynamic inclusion of nested relationships and aggregate counts, as well as the execution of custom programmatic logic for filters and sorting via invokable classes

utoipa is a Rust API documentation tool used to generate machine-readable OpenAPI specifications. It functions as a specification generator and schema mapper that converts Rust structs and enums into compliant OpenAPI schemas. The project distinguishes itself by using procedural macros and traits to automate metadata extraction from code. It supports complex data modeling, including generics, polymorphism, and recursive type resolution, while synchronizing field renaming and tagging from serialization attributes. It also enables the composition of modular specifications, allowing multiple sma

codeigniter-restserver is a REST API framework and controller library for building RESTful servers within the CodeIgniter PHP environment. It functions as a backend implementation that handles standard HTTP methods to expose data and functionality through structured endpoints. The project includes a customizable response engine that allows for the transformation of output data into various specific formats through custom formatting methods. The library provides tools for mapping incoming HTTP requests to controller methods, managing resource responses, and implementing configuration-based ac

This project is a REST API framework for NestJS designed to automate the creation of boilerplate-free CRUD endpoints and resource management. It functions as an automated CRUD generator that produces controllers and services for standard database operations, accelerating the development of RESTful APIs. The toolkit includes a REST query parser that translates complex URL parameters into structured database filters, pagination, and sorting rules. It also operates as an API response serializer to control the exposure of entity fields and manage nested relations within JSON responses. For extend

swagger-core is a set of libraries for parsing, generating, and serializing OpenAPI specifications to automate REST API documentation. It provides tools to read, validate, and transform JSON or YAML specifications into programmable objects, as well as a generator that scans source code and annotations to create formal technical descriptions of an API. The project enables bi-directional specification serialization, allowing in-memory API definitions to be converted between native language objects and structured files. It uses a plugin-based scanning mechanism and annotation-driven generation t

Spec is a comprehensive set of frontend coding standard specifications and project architecture guides. It provides a framework for organizing directory structures, module dependencies, and package layouts to create scalable and predictable codebases. The project defines rigorous governance standards for React components, including specific naming conventions and structural patterns for props. It also establishes a JSON API data specification to ensure predictable communication between system components through standardized exchange formats and HTTP response structures. The specification cov

This project provides a foundational boilerplate for building full-stack web applications that connect React frontend interfaces to backend GraphQL services. It serves as a structured environment for developers to initialize both client and server components, ensuring a unified architecture for data-driven software. The framework emphasizes a schema-first approach to API design, allowing for consistent data modeling across the entire stack. It includes pre-configured templates that integrate authentication and real-time subscription capabilities, alongside modular middleware for managing requ

Neon is a serverless PostgreSQL database platform designed with a decoupled storage and compute architecture. It functions as a multi-tenant system that isolates data and compute resources for independent users on shared cloud infrastructure, utilizing a specialized PostgreSQL storage engine. The platform features a database branching system that allows for the creation of isolated, instant copies of a database for testing and development. It further distinguishes itself with an HTTP-based SQL gateway, enabling the execution of queries via HTTP requests and JSON responses without the need for

This repository contains the official technical specification for GraphQL. It serves as the formal standard defining the query language, the execution engine, and the schema definition rules required to maintain consistency across different API implementations. The specification establishes a language-agnostic standard for query syntax and semantics, alongside a formal protocol for introspection. It provides the documented algorithms and logic requirements necessary for implementing a consistent server, ensuring that metadata about types and fields can be discovered by automated tools. The p

api-blueprint is a markdown-based API design language and specification standard used to define the structure, behavior, and data schemas of HTTP web services. It provides a formal method for mapping HTTP methods to resources and defining payload validation rules through a machine-readable syntax. The project functions as a blueprint for creating interactive technical documentation and functional mock servers. These tools transform design specifications into human-readable guides and simulated backend environments to enable integration testing before implementation. The language covers API m

JDA is a Java wrapper for the Discord API, providing a framework for building automated agents and integrating applications with the chat platform. It functions as both a REST API client for managing server entities and a gateway client that maintains persistent WebSocket connections for real-time state updates. The library features a comprehensive voice API module for managing audio streaming, voice channel connectivity, and soundboard integration. It also includes a specialized toolkit for interactive UI design, enabling the creation of slash commands, buttons, select menus, and modal input

GreptimeDB is a distributed, open-source time-series database built for unified observability. It stores and queries metrics, logs, and traces together in a single columnar engine, supporting both SQL and PromQL for analysis. The database is designed as a Kubernetes-native operator with a decoupled compute and storage architecture, enabling horizontal scaling and multi-region deployment. What distinguishes GreptimeDB is its role as a multi-protocol ingestion gateway, accepting data through OpenTelemetry, Prometheus Remote Write, InfluxDB, Loki, Elasticsearch, Kafka, and MQTT protocols without

Cabot is a self-hosted incident management platform and monitoring alert manager. It serves as a centralized system for receiving external monitoring data, managing on-call responder rotations, and dispatching incident notifications to administrators to ensure prompt resolution of system failures. The platform provides a containerized monitoring interface and a REST API for programmatically creating and modifying monitoring data and incident reports. It coordinates the routing of critical system alerts and manages the scheduling of personnel for on-call rotations. The system includes capabil

This project is an interactive learning resource and tutorial for implementing the Apollo GraphQL client. It provides a guided instructional experience to teach frontend data management, specifically focusing on how to connect web applications to GraphQL data sources. The platform uses a sequenced path of hands-on lessons and interactive code walkthroughs. These modules combine instructional text with executable code blocks to demonstrate real-time API behavior and the integration of GraphQL into frontend frameworks. The curriculum covers the use of declarative queries and schema-driven data

fast_jsonapi is a Ruby object serializer designed to transform complex backend data objects into structured JSON representations. It specifically implements the JSON:API format to ensure consistent data exchange between servers and clients. The library functions as a compound document generator, allowing related resources to be embedded within a single response to minimize network requests. It uses a class-based schema definition to decouple internal database models from the public API representation. The project includes a command-line tool for generating serializer boilerplate by scanning

Om is a frontend state management library and reactive user interface framework that integrates ClojureScript functional programming with the React virtual DOM rendering engine. It provides a bridge to build responsive web interfaces where visual elements automatically update when underlying application data changes. The project centers on a normalized state store that flattens complex data structures into a relational format. This data is accessed through a reader-based querying system, which decouples the user interface from the state by allowing components to declare specific data requirem

This project is a cryptocurrency exchange API documentation portal. It provides a technical reference for integrating with REST and WebSocket interfaces to trade digital assets and stream market data. The site serves as a REST API reference with schema-driven endpoint descriptions and request-response examples, alongside a WebSocket data stream guide for receiving live order book updates and price feeds. The documentation is implemented as a markdown-based static site featuring client-side search indexing and hierarchical navigation. It uses schema-driven content generation and linked asset

stacktrace.js is a JavaScript library designed for generating and parsing detailed function call stacks from error objects across different web browsers. It functions as a stack trace parser and error instrumentation utility that captures execution flow and error traces. The project differentiates itself through its ability to resolve source maps, translating minified JavaScript stack traces back to original source lines. It also includes a remote error reporter for transmitting processed exception data and stack traces to a centralized server for analysis. The library covers broad capabilit

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

req is a chainable HTTP client library for Go designed to simplify request configuration and automatic response decoding into structures. It provides a fluent-interface request builder that allows developers to incrementally define request properties and encapsulate HTTP logic into reusable API SDKs. The project distinguishes itself with a TLS fingerprint emulator that mimics browser network signatures to bypass bot detection and crawler filters. It also includes a concurrent file downloader that increases transfer speeds by fetching large remote files in parallel segments. The library cover

This is an asynchronous Swift client library for calling OpenAI’s API across Apple platforms. It provides native access to chat completions, image generation and editing, speech synthesis and transcription, text embeddings, and content moderation through a single interface built on Swift’s async-await concurrency model. The client supports structured output generation by constraining model responses to a provided JSON schema, and enables real-time consumption of generated text through streaming responses delivered as an AsyncSequence. It includes a thread-based conversation model for managing

Restangular is a REST client and resource mapper for AngularJS applications. It provides a suite of tools for mapping API endpoints to local objects and collections, facilitating frontend CRUD implementation through standard HTTP methods. The project distinguishes itself through an async data binding system that links user interface elements to server-side objects, ensuring automatic updates upon request completion. It also features a programmable request interceptor pipeline for modifying headers and transforming responses, as well as a JSONP request handler to bypass same-origin policy rest

Apollo Kotlin is a strongly-typed GraphQL client and code generation library designed for Kotlin and JVM applications. It functions as a comprehensive development tool that transforms GraphQL schema definitions and query documents into type-safe models during the build process, ensuring that data access errors are identified at compile time rather than at runtime. The project distinguishes itself through its multiplatform runtime abstraction, which allows developers to share data fetching and caching logic across Android, iOS, and desktop environments. It provides a normalized local caching s

EmDash is an open-source content management system built on Astro that combines a visual admin panel with a plugin-driven architecture and server-side rendering. It provides a complete content management system with structured content modeling, a rich text editor using Portable Text format, and a TypeScript API for type-safe content queries. The system supports authentication through passkeys, OAuth 2.1, and external providers, with role-based access control and fine-grained permission scopes. What distinguishes EmDash is its plugin development framework, which supports both native plugins ru

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