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RESTful APIs
Representational State Transfer (REST) is an architectural style for designing networked applications. RESTful APIs use HTTP methods to perform CRUD operations and communicate between client and server using stateless, cacheable requests with standard conventions. This collection covers RESTful API design principles, best practices, standards, tools, and the OpenAPI Specification ecosystem.
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DomainSecurityWebsiteOpenAPI SpecificationRFC 7231 HTTP SemanticsRoy Fielding REST DissertationRichardson Maturity ModelOWASP API Security Top 10JSON API SpecificationHAL SpecificationSwagger ToolsPostman REST Client
Providers working in RESTful APIs
Providers whose own tags share at least two of this topic's tags, most shared first — the top 30 of 42.
| Provider | About | Rating | APIs |
|---|---|---|---|
| REST | REST (Representational State Transfer) is an architectural style for designing networked applications, defined by Roy Fielding in his 2000 doctoral dissertation. REST uses stateless communication, standard HTTP methods (GET, POST, PUT, DEL… | emerging | 4 |
| RESTful Services | Representational State Transfer (REST) services are web services built using the REST architectural style, which uses stateless HTTP communication and standard HTTP methods (GET, POST, PUT, DELETE, PATCH) to expose resources. RESTful servi… | emerging | 5 |
| Swagger | Swagger is an open-source framework by SmartBear for designing, building, documenting, and consuming RESTful APIs using the OpenAPI Specification. Originally created by Wordnik in 2011, Swagger became the OpenAPI Specification (OAS) in 201… | thin | 5 |
| API Style Guides | A landscape index of public API style guides published by leading technology companies and standards bodies. API style guides codify conventions for resource modeling, URI design, HTTP method use, status codes, error formats, pagination, v… | emerging | 11 |
| RESTful | Representational State Transfer (REST) is an architectural style for designing networked applications using stateless HTTP communication and uniform interfaces. RESTful describes systems and APIs that conform to the REST constraints: clien… | emerging | 5 |
| 0xArchive | 0xArchive is a replayable market-data archive for two decentralised perpetuals venues, Hyperliquid and Lighter, delivered as one REST API, one WebSocket API that carries both live subscriptions and historical replay on a single connection,… | exemplar | 2 |
| Postman | Postman is the world's leading API platform, used by 35+ million developers to design, build, test, document, mock, monitor, and govern APIs across the entire API lifecycle. The platform spans Collections, Workspaces, the API Client, Spec… | exemplar | 21 |
| Cvent Event Cloud | Cvent Event Cloud is the event management product line of the Cvent Platform. It supports the full event lifecycle: event creation, registration, marketing, agenda and session management, mobile event apps, onsite check-in, virtual and hyb… | exemplar | 2 |
| Amazon API Gateway | Amazon API Gateway is a fully managed service that makes it easy to create, publish, maintain, monitor, and secure APIs at any scale. It acts as the front door for applications to access backend services, supporting REST APIs, HTTP APIs, a… | exemplar | 13 |
| StayingAPI | Unified accommodation-data API returning live search, availability, price, cross-OTA price comparison, and normalized reviews across Airbnb, Booking.com, Vrbo, and Google Hotels via a single normalized JSON schema, so one integration cover… | strong | 1 |
| Routebase | API lifecycle platform covering Design (visual OpenAPI editor), Mock (spec-driven mock servers), Test (suites, assertions, OWASP security scanning), Document (published docs portals), and Agents (MCP server), built around a single living O… | strong | 1 |
| Netcracker | Netcracker Technology is a Waltham, Massachusetts-based BSS/OSS and digital business software vendor and a wholly owned subsidiary of NEC Corporation. It sells cloud BSS, digital commerce and monetization, convergent charging, service and… | strong | 4 |
| APIVerve | An agent-native API marketplace exposing 300+ (367+ enumerated) ready-made REST APIs behind a single API key with a uniform JSON envelope. Offers REST, an alpha GraphQL gateway, OpenAPI + Postman contracts, a self-hosted apis.json, an llms… | strong | 3 |
| ReefAPI | ReefAPI is a unified web-data gateway that fronts 183 production data engines - Amazon, Zillow, Reddit, Trustpilot, LinkedIn Jobs, Indeed, Google Maps, Booking.com, StockX, YouTube and more - behind ONE JSON contract, ONE API key and ONE s… | strong | 1 |
| Autodesk | Autodesk is a global leader in design, engineering, and entertainment software, providing cloud-connected platform APIs through Autodesk Platform Services (APS). APS APIs enable developers to build applications that access design data, aut… | strong | 12 |
| Odds API | OpenAPI-first sports betting odds API (odds-api.net) providing bookmaker odds, odds comparison, arbitrage, positive EV, line movement, and racing/sports coverage via REST plus SSE and WebSocket streaming. Agent-native with an MCP server, l… | strong | 1 |
| ETSI | ETSI, the European Telecommunications Standards Institute, is a not-for-profit standards development organisation headquartered in Sophia Antipolis, France, and one of only three bodies officially recognised by the European Union as a Euro… | strong | 24 |
| MediaCaption API | A credit-billed REST API for retrieving public YouTube transcripts, with single and bulk transcript jobs, job-level webhooks, and AI transcription/translation capabilities. Backed by a public OpenAPI 3.1 contract with bearer/X-API-Key auth… | developing | 1 |
| 3GPP | 3GPP (the 3rd Generation Partnership Project) is the global standards partnership that writes the technical specifications for mobile networks — GSM, UMTS, LTE, 5G and the ongoing 6G work — through seven regional Organizational Partners (A… | developing | 116 |
| Blng | BLNG is an AI-driven creative suite for the jewelry industry, giving jewelers, designers, brands, and retailers tools to explore, refine, and present designs fast and without compromise. Its Design product turns sketches, doodles, photos,… | developing | 4 |
| Vehicles.dev | Automotive vehicle data platform offering a live REST API for VIN decoding, specifications, recalls, market valuation, depreciation, ownership costs, listings, price history, and photos, backed by federal sources (NHTSA vPIC, NHTSA recalls… | developing | 1 |
| AutoCAD | APIs for Autodesk AutoCAD, providing programmatic access to CAD design, drawing, and automation capabilities through Autodesk Platform Services (APS, formerly Forge) and desktop development environments including AutoLISP, ObjectARX, .NET,… | developing | 6 |
| Ruby Programming Language and Popular API Gems | A profile of the Ruby programming language ecosystem from an API perspective: the language and its standard library HTTP surface (Net::HTTP), the rubygems.org package registry and its public v1/v2 REST API, Bundler, RBS type signatures, po… | developing | 1 |
| Adsmom | Adsmom (SIA Adsmom) is a Latvia-based AI-powered ad intelligence platform that indexes 200M+ ads from Meta, TikTok and Google, decodes them with AI, and gives brands, agencies and research teams a clear read on what competitors are running… | developing | 1 |
| Acelab | Acelab is a Brooklyn, New York software company building Material Hub, an AI-assisted material intelligence platform for the architecture, engineering, construction and owner (AECO) market. Founded in 2019 by architecture graduates from Ha… | thin | 2 |
| Apache CXF | Apache CXF is an open-source Java services framework governed by the Apache Software Foundation that helps build and develop web services using JAX-WS (SOAP) and JAX-RS (REST) frontend APIs. It supports contract-first (WSDL) and code-first… | thin | 1 |
| LAPIS | LAPIS (Lightweight API Specification for Intelligent Systems) is a compact, LLM-native API description format authored by Daniel Garcia (cr0hn). It is designed as the format you convert your OpenAPI specifications to when the consumer is a… | thin | 1 |
| UML | UML (Unified Modeling Language) is the standard modeling language for software architecture, system design, and technical documentation. Governed by the Object Management Group (OMG), UML defines a set of notation conventions and diagram t… | thin | 2 |
| Snaptrude | Snaptrude is a cloud-native design platform for architecture and interior design that unifies sketching, real-time collaboration, AI-assisted programming, and BIM into a single browser-based tool. Snaptrude 3.0 offers four integrated modes… | thin | 1 |
| Dropwizard | Dropwizard is a Java framework for developing ops-friendly, high-performance RESTful web services, pulling together stable, mature libraries from the Java ecosystem into a simple, lightweight package. | thin | 1 |
Tags
ArchitectureHTTPRESTWeb ServicesOpenAPIStandardsDesign