APIs & backend
backend-as-a-service, API gateways, serverless functions, queues
Compare the best in APIs & backend side by side →
- IP-API.com
IP Geolocation API - lookup any IP address
- IPGeolocation.io
IP geolocation API and downloadable IP intelligence databases with threat intelligence
- IPWho
IP geolocation API returning location, network, company, timezone, currency, security and user-agent data for any IPv4 or IPv6 address
- Inngest
Durable execution for workflows and AI agents
- Hook0
Open-source webhooks-as-a-service with HMAC signatures, configurable retries, and EU hosting
- FreeIPAPI
Free IP geolocation API for IPv4 and IPv6 addresses, available in JSON and XML formats.
- Formfeed
PDF, e-invoice and image API for developers and AI agents
- finlight
Real-time financial news API with sentiment analysis, WebSocket streaming, and an advanced query builder
- CarAPI.dev
Automotive data API platform for VIN decoding, vehicle history, listings, and EV data
- BigDataCloud
IP geolocation, reverse geocoding, phone/email verification, and network intelligence APIs
- App AI Gateway
Keep AI provider keys out of your iOS app. Verify each request with App Attest and set limits and budgets per user.
- APIVerve
One key for 300+ production APIs
- APITemplate.io
Automate PDF documents and images at scale
- AnyHook
Webhook relay that answers senders in about a second, stores every event, and forwards to your handler with retries and replay
- AlphAI
Financial news API for trading bots and AI agents
- Abstract API
API suite for email, phone, and IP verification, fraud detection, and data enrichment
- HS Ping
Country-specific HS & HTS code lookup API
- FinancialData.Net
Stock Market API & Financial Data API
- DB-IP Free IP Geolocation API
Free IP geolocation API providing IP to country, state, and city mapping.
- Commerce Layer
API-first, headless commerce platform for multi-market ecommerce
- Calendarific
Global Holiday Calendar API for National and Religious Holidays
- Doppio
HTML to PDF and screenshot API with managed Chromium rendering
- CurrencyBeacon
REST currency exchange-rate API with code samples and an MCP server for AI agents
- Export SDK
PDF generation API with visual template builder, REST API, SDK, and no-code integrations
- Geolocated.io
Free IP Geolocation API providing country, city, ISP, latitude, longitude and more in JSON format from any IP address.
- disease.sh
Open API for disease-related statistics
- Advicement DynamicDocs API
Dynamic PDF generation via JSON to PDF API and Excel Add-in
- Doczilla
API for PDF and screenshot generation
- Country-State-City Microservice and API
API for accessing geographical data including countries, regions, provinces, cities, and postal codes.