Discover top API development, testing, and management platforms. Compare features, pricing, and reviews.
60 tools
Tools in API Tools
SQD — SQD (formerly Subsquid) is an open-source onchain data platform that delivers validated, real-time and historical blockchain data across 225-plus networks through a single streaming API.
PostgREST — PostgREST is a free, open-source standalone web server that turns an existing PostgreSQL database directly into a RESTful API, generating endpoints from database tables, views and stored procedures without custom backend code.
DreamFactory — DreamFactory is an API management platform that automatically generates fully documented, secure REST APIs on top of databases, file stores, and legacy systems, primarily for enterprise and government use.
Kong — API and AI connectivity platform built around the open-source Kong Gateway, offering API management, an AI gateway and a Konnect control plane.
Tyk — Tyk is an open source and enterprise API gateway and management platform for building, securing, and scaling REST, GraphQL, TCP, and gRPC APIs.
Gravitee — Gravitee is an open-source-rooted API, event and AI agent management platform that lets enterprises design, secure, govern and monetize APIs and event streams from one gateway.
KrakenD — Open-source, high-performance API gateway written in Go, offering stateless, declarative routing plus an Enterprise edition with AI Gateway and security features.
Gloo Gateway — Gloo Gateway is an Envoy-based API gateway from Solo.io for managing REST, gRPC, GraphQL, and WebSocket traffic, free and open source with paid enterprise add-ons.
Traefik Hub — Traefik Hub is Traefik Labs' commercial, Kubernetes-native API management and API gateway add-on that extends the open-source Traefik Proxy with security, GitOps-based publishing, and a self-serve developer portal.
Hurl — Open-source command-line tool for running and testing HTTP requests defined in a simple plain-text format, powered by libcurl.
Schemathesis — Schemathesis is an open-source property-based API testing tool that automatically generates test cases from OpenAPI and GraphQL schemas to catch bugs and spec violations.
Convoy — Convoy is an open-source, cloud-native webhooks gateway that securely ingests, retries, and delivers webhook events at scale for engineering teams.
ApiFlash — ApiFlash is a website screenshot API built on headless Chrome and AWS Lambda that lets developers capture full-page, mobile, and custom-viewport screenshots of any URL through a single REST endpoint.
geoapify.com — Geoapify is a location platform providing maps, geocoding, routing, and places APIs built on open data sources like OpenStreetMap, aimed at developers building map-based applications.
sumsub — Sumsub is an AI-powered identity verification and compliance platform that helps businesses verify users and companies, screen for AML risk, monitor transactions, and prevent fraud.
checkify — Checkify is a privacy-focused age and identity verification tool that lets WordPress and WooCommerce merchants add checkout-time verification passes without collecting or storing personal data, with an SDK and API for custom app integrations.
compressify — Automatically compress, resize, and convert images to next-gen formats like WebP and AVIF. Supercharge website speed and Google PageSpeed scores.
saudiaddresspro — Saudi Address Pro: Customers enter a short code, we auto-fill the complete SPL-verified address. Reduce cart abandonment, eliminate address typos, ensure accurate delivery. Address widget for Magento, Shopify, WooCommerce. TGA 2026 compliant. العنوان الوطني السعودي
datafiniti — We offer easy access to property, people, business, and product data.
pictomancer — Resize, compress and convert images over HTTP in under 50ms, from $0.001 per image. REST, Python SDK, WordPress plugin, MCP. First 50 requests free.
clearbounce — Verify email lists with 99.5% accuracy. Bulk verification, real-time API, form protection shield & deliverability monitoring. Start free with 100 credits.
nowpayments — ▶️ NOWPayments is a crypto payment gateway for accepting Bitcoin, USDT, Ethereum and other cryptocurrencies. ✅ Sign up for free and start accepting crypto NOW!
anywarex — AnyWareX is an Austria-based software studio building SaaS products such as TOTPX, a cloud TOTP verification API, and ClockTAM, a TOTP-integrated time tracking system.
updatebrief — Update Brief turns WordPress plugin and core updates into concise, plain-English summaries delivered via a simple API, so developers, agencies, and managed hosts can show clients exactly what changed.
snapsheetclaims — Snapsheet is a cloud-based claims management platform for P&C insurance carriers, MGAs, and TPAs, unifying claims files, no-code automation, and open APIs to run auto, home, boat, and commercial claims end-to-end.
makecrypto — MakeCrypto is a crypto payments and swap infrastructure platform offering MakePay (checkout links and merchant plugins for accepting crypto payments) and MakeSwap (a token-swap API for embedding cross-chain trading).
hero — Hero is the smart software helping US travel agents and resellers sell more in less time, with real-time rates and instant ticketing.
predax — Real-time IP intelligence, risk scoring, and abuse detection API for security teams and developers. Block fraud, bots, and abuse before it hits your application.
respectify — Respectify moderates comments before they post and coaches commenters toward better discourse. Near drop-in replacement for Google's Perspective API with compatible toxicity scoring and migration guides.
autoapiwp — Ingestics is a WordPress plugin that automates content ingestion from REST APIs and RSS feeds. Fetch, transform, filter and publish content automatically without coding.
vessot — VESSOT is a zero-knowledge encrypted data vault that lets businesses centralize and securely sync sensitive data across their systems via a REST API.
fuuffy — Fuuffy (貨飛) is a Hong Kong-based shipping rate-comparison and fulfillment platform where e-commerce sellers and individuals compare live rates from 16+ international couriers, book pickups, and ship to 180+ countries.
roxyapi — Astrology API for spiritual wellness apps. Natal charts, horoscopes, Vedic kundli, tarot, human design. 175+ endpoints, 12+ domains, Remote MCP.
synchronity — Synchronity is agentic commerce infrastructure that lets AI assistants like Claude, ChatGPT, and Cursor shop, manage carts, and check out across WooCommerce and custom storefronts, with human approval built in.
zywrap — Use 125K+ pre-built wrappers across 14K+ real use cases. Pass basic data, files, or variables while Zywrap handles prompt logic, model routing, artifacts, usage ledger, and API workflow execution.
clicksend — ClickSend is a cloud-based business messaging API and dashboard for sending and receiving SMS and MMS at scale, with no-code integrations for apps like Salesforce, Zapier, and Shopify.
assemblyai — AssemblyAI provides Speech AI models and APIs that transcribe speech to text and extract insights from voice data.
ikaros — IKAROS Pro is a WooCommerce and WordPress engineering studio that builds custom ecommerce systems and connects storefronts to ERPs, POS platforms, and marketplaces.
planetaenvios — Planeta Envíos is a multi-carrier shipping platform for Mexico that lets businesses compare rates, generate shipping labels, and track domestic and international shipments from FedEx, DHL, Estafeta, UPS, and more in one dashboard.
acrossai — Connect Claude, ChatGPT, or Cursor to your self-hosted WordPress site. AcrossAI is an open-source MCP server and Abilities API with no third-party relay.
trumailo — Email verification API with eight deliverability signals per address. Real SMTP handshake, catch-all probe, disposable + role detection, provider mapping. Cached responses under 10ms. Open source, free during beta.
vedintelastroapi — The most accurate Vedic astrology API — accuracy verified against Jagannatha Hora across 71 Swiss Ephemeris checks. Built on Swiss Ephemeris with zero external dependencies. Drop-in replacement for VedicAstroAPI. 133 endpoints. Horoscope, Kundali, Dasha, Panchang, Matching, Claude AI narratives.
mercuryai — MercuryAI is a unified LLM platform that gives developers and businesses one OpenAI-compatible API and dashboard to access GPT-4o, Claude, Gemini, Llama and 20+ other language models.
30yearweather — Weather forecast and historical data analysis based on 30 years of NASA satellite data. Accurate long-range forecasts for travel, weddings, and event planning.
hilt — Hilt completes the paid-request loop with HTTP 402, Solana USDC settlement, receipts, entitlements, webhooks, and atomic usage consumption.
thumbapi — Thumbnail API to generate thumbnails from any title via a single REST API call. Built for n8n, Make.com, Zapier, YouTube, Instagram, X, blogs, and automation workflows.
smstunnel — Write texts on your computer and send them from your own Android phone and number. Transactional SMS, 2FA codes, and notifications — delivered by your phone.
addresszen — AddressZen is an address verification and autocomplete API that validates, standardizes, and corrects postal addresses using authoritative sources like USPS across 240+ countries.
LatentKit — LatentKit is a route-based AI gateway that gives applications a single API for chat, completions, embeddings, images, vision, audio, and video across multiple AI providers.
captcha — CaptchaLa is a bot and abuse prevention platform that combines risk-based CAPTCHA challenges, server-side verification, and content moderation APIs for web and mobile apps.
hopewiser — UK-based address, email, and bank validation software helping businesses cleanse data and prevent failed deliveries and fraud.
activelayer — AI-powered spam protection API that blocks form and comment spam in milliseconds without CAPTCHAs, for WordPress and any framework.
oopspam — OOPSpam is a spam and fraud detection API that filters spam submissions from forms, comments, and signups without CAPTCHAs or user data collection.
invoice-api — REST API for generating, validating, parsing, and archiving compliant e-invoices (XRechnung, ZUGFeRD, Factur-X, Peppol) across 28 countries.
indusface — Indusface provides application security offerings including Web Application & API Protection(WAAP), WAF, DAST & Malware Scanners and, Entrust SSL certificates
apibara — Apibara is a developer API providing structured, normalized JSON access to live Copart and IAAI vehicle auction data — vehicle search, VIN lookups, pricing, and auction history — plus a WordPress plugin for displaying listings without scraping.
painlessanalytics — Painless Analytics is a privacy-first web analytics platform that delivers simplified, cookie-free visitor tracking and reporting for websites of any size.
pinpeo — Pinpeo is a Mexican payment gateway and financial services platform that lets businesses accept card, POS, and OXXO cash-deposit payments via API or a WooCommerce plugin, and lets consumers send transfers, remittances, and pay bills from a mobile app.
orshot — Image, PDF and video automation from templates via API or AI agents. Works with Zapier, Make and n8n. Built for agencies, developers and founders. Start free.
langbly — Context-aware translation API. Drop-in Google Translate v2 replacement, 100+ languages, and a 75% lower usage rate. 500K characters included every month.