All APIs

Browse curated APIs with real-time link verification, pricing history, and community feedback. Filter by free tiers or explore adjacent categories.

LogRocket
Observability, Errors & ReplayLogRocket

LogRocket

Network Request/Log/Error Data Capture API Developer-centric Replay Tool, providing complete technical debugging context. Target Users: Developers needing to reproduce and debug complex frontend issues.

New
Paid
Datadog
Observability, Errors & ReplayDatadog

Datadog

Metrics/Logs/Traces Data Ingestion & Extraction API All-in-one Cloud Monitoring Platform Integrating Logs, Metrics, Traces, RUM, and Session Replay. Target Users: DevOps Teams, Large/Multi-cloud Environment Enterprises.

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Paid
WooCommerce API
eCommerce & MarketplacesWooCommerce API

WooCommerce API

Products, Orders, Customer Management (WordPress Plugin) REST API Target Users: WordPress Users, Developers seeking Open Source and High Control.

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Paid
DocuSign eSignature API
Documents, PDFs & eSignatureDocuSign eSignature API

DocuSign eSignature API

Embedded Signing, Document Workflow, CLM REST API Target Users: Enterprise Apps, Finance, Real Estate, High Security & Compliance Requirements.

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Paid
Jumio
Auth, Identity & KYCJumio

Jumio

Document Verification, Biometrics, AI Moderation. Industry Leader, Powerful Document Processing.

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Paid
Sendbird
Support, Chat & FeedbackSendbird

Sendbird

Chat API / SDK, Supporting Group Chat, 1-on-1 Messaging, Push Notifications. Ultimate Developer Tools and In-app Chat Embedding Experience. Target Users: Teams needing to embed highly customizable chat features in their own App/Website.

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Paid
Tawk.to
Support, Chat & FeedbackTawk.to

Tawk.to

JavaScript API, Live Chat Feature. Basic features completely free, easy to install. Target Users: Limited budget, only needing website live chat features.

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Paid
USPS
Shipping, Fulfillment & TrackingUSPS

USPS

Shipping API, Tracking API, Rate Calculator API REST/XML API Target Users: Handling US domestic small parcels, mailing services.

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Paid
Flexport
Shipping, Fulfillment & TrackingFlexport

Flexport

Freight Forwarding API, Ocean/Air Cargo Tracking, Supply Chain Visibility REST API Target Users: Enterprises processing Bulk Cargo, International Supply Chain, needing End-to-End Visibility.

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Paid
17track API
Shipping, Fulfillment & Tracking17track API

17track API

Universal Tracking API (Global 1500+ Carriers) REST API Target Users: International Logistics Tracking, Cross-border E-commerce, especially in Asia.

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Paid
AfterShip
Shipping, Fulfillment & TrackingAfterShip

AfterShip

Universal Tracking API (Global 1000+ Carriers) REST API Target Users: E-commerce, SaaS Platforms, Services needing to provide Branded Tracking Pages and Notifications.

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Paid
ShipBob
Shipping, Fulfillment & TrackingShipBob

ShipBob

3PL (Third Party Logistics) Fulfillment API, Warehousing, Inventory Management REST API Target Users: Growing E-commerce Brands needing to outsource Warehousing, Packing, and Shipping.

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Paid
ShipStation
Shipping, Fulfillment & TrackingShipStation

ShipStation

Order Import, Batch Label Printing, Carrier Integration SaaS Platform API Target Users: SMB E-commerce, Sellers needing One-stop Order & Shipping Management.

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Paid
ShipEngine (ShipStation subsidiary)
Shipping, Fulfillment & TrackingShipEngine (ShipStation subsidiary)

ShipEngine (ShipStation subsidiary)

Multi-Carrier Rates, Labels, Address Validation, Tracking REST API Target Users: E-commerce Platforms or SaaS Providers seeking Powerful Logistics Backend Infrastructure.

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Paid
Shippo
Shipping, Fulfillment & TrackingShippo

Shippo

Multi-Carrier Rate Comparison, Label Generation, Tracking REST API Target Users: E-commerce of all sizes, Platforms needing to compare rates and manage multiple carriers.

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Paid
DHL
Shipping, Fulfillment & TrackingDHL

DHL

Shipping API, eCommerce API, Tracking API (International Parcel) REST API Target Users: European & International Freight, Cross-border E-commerce, Global Logistics.

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Paid
Algolia
Search, Recommendations & PersonalizationAlgolia

Algolia

Search API, Recommend API Ultra-fast Real-time Search Experience, Highly Customizable.

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timekit
Scheduling & Calendarstimekit

timekit

Complex Scheduling Logic, Real-time Availability Calculation REST API Target Users: Booking Systems needing High Flexibility and Complex Business Rules (e.g., Healthcare, Consultants).

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Paid
Calendly API
Scheduling & CalendarsCalendly API

Calendly API

Booking Pages, Scheduling Links, Event Management REST API, Webhooks Target Users: Integrating Booking Flows into CRM/Sales Tools, Custom Booking Experiences.

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Paid
Cronofy
Scheduling & CalendarsCronofy

Cronofy

Enterprise Calendar Sync & Scheduling Unified REST API Target Users: Enterprise Apps, Scheduling Services needing High Reliability, Real-time Multi-calendar Sync.

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Paid
Nylas
Scheduling & CalendarsNylas

Nylas

Unified Calendar API (Google, Outlook, Exchange, Apple) Unified REST API Target Users: Developers, SaaS Companies, Seeking Single API to Integrate All Major Calendar Platforms.

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Paid
Microsoft Graph (Outlook Calendar)
Scheduling & CalendarsMicrosoft Graph (Outlook Calendar)

Microsoft Graph (Outlook Calendar)

Access Outlook/Exchange Calendars, Mail, Contacts, etc. M365 Resources REST API Target Users: Deeply Integrated Microsoft 365 Enterprise Environment, Applications needing Unified Access to M365 Data.

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Checkout.com
Payments & BillingCheckout.com

Checkout.com

International payment acquiring, high volume enterprise solutions, custom rates. Target Users: Global, Mid-to-Large Enterprises

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Paid
Authorize.Net
Payments & BillingAuthorize.Net

Authorize.Net

Stable legacy gateway, high security and customizable checkout. Target Users: North America, UK, Australia

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Paid