Browse the directory.

Travel & Booking APIs

AeroAPI is a modern, query-based REST API from FlightAware that provides comprehensive real-time, historical, and predictive flight data. It serves developers and businesses needing accurate aviation data for applications, analytics, and operational systems.

Travel & Booking APIs

Cirium offers one of the most extensive and accurate datasets in the aviation industry, covering flight schedules, status, fleet data, and travel analytics. They serve airlines, airports, financial institutions, and travel technology companies.

Travel & Booking APIs

OAG is a global travel data provider that offers comprehensive and accurate aviation data. They supply flight schedules, real-time flight status, and analytical tools to airlines, airports, online travel agencies (OTAs), and technology partners.

Travel & Booking APIs

AviationStack offers a free, real-time flight tracker and global aviation data API. It provides access to an extensive set of data, including real-time flight status, historical flights, schedules, airline routes, airports, and aircraft information, serving over 5,000 companies.

Identity & Auth

Authress is a complete authentication and authorization solution designed for developers to easily integrate into their applications. It provides JWT-based login, fine-grained, resource-based access control, and supports enterprise-grade features.

Identity & Auth

SuperTokens is an open-source authentication provider for developers, offering a modular and flexible solution for adding secure login and session management to applications. It serves as an alternative to services like Auth0 and Okta, with a focus on developer control and self-hosting capabilities.

FX & Currency Exchange

Fixer is a simple and lightweight API for current and historical foreign exchange (forex) rates. It provides real-time exchange rate data for 170 world currencies, updated as frequently as every 60 seconds.

FX & Currency Exchange

ExchangeRate-API is a developer-focused service providing a simple JSON API for accessing current and historical foreign exchange rates. It serves individuals and businesses by offering reliable currency conversion for use in websites, applications, and financial systems.

FX & Currency Exchange

Open Exchange Rates offers consistent, reliable exchange rate data and currency conversion through a simple JSON API. Trusted by over 100,000 developers, it supports over 200 world currencies with both live and historical data.

Product Analytics

Segment is a customer data platform (CDP) that allows businesses to collect, unify, and connect their customer data to any system. It streamlines data collection from web and mobile apps, helping companies to better understand the customer journey and deliver personalized experiences.

Product Analytics

Heap is a digital insights platform, now part of Contentsquare, that automatically captures and organizes all user interactions across web and mobile platforms. It helps product, marketing, and data teams understand user behavior to increase conversion, retention, and customer delight without manual event tracking.

Product Analytics

PostHog is an all-in-one, open source product analytics platform for developers. It enables teams to understand user behavior with tools like session replay, feature flags, A/B testing, and surveys, replacing multiple specialized tools.

Feature Management

Unleash is an open-source feature management platform that gives enterprise teams full control over their software releases. It enables gradual rollouts, A/B testing, and instant rollbacks, decoupling feature releases from code deployment. Unleash is designed for large enterprises with a focus on security, governance, and control.

Feature Management

Statsig provides a comprehensive platform for product teams to build better products through experimentation and data. It enables developers and product managers to manage feature flags, run A/B/n tests, and automate impact analysis.

Feature Management

Optimizely is a leading Digital Experience Platform (DXP) providing a suite of tools for content management, marketing, and commerce. It enables businesses to create, optimize, and personalize digital experiences across various channels, serving primarily mid-market and enterprise clients.

Feature Management

Split is a feature delivery and experimentation platform that helps engineering teams release features quickly and safely. It provides a unified solution for feature flagging, release monitoring, and A/B testing to give developers control over feature rollouts and measure their impact.

API Management

ngrok is an all-in-one cloud networking platform that creates secure tunnels to services running anywhere. It allows developers to expose local servers to the public internet, test webhooks, and build unified ingress for all their services.

Webhook Delivery

HookRelay is a webhooks-as-a-service platform that handles the reliable delivery of webhooks. It allows developers to offload webhook infrastructure, providing features like automatic retries, payload signing, and error visibility.

Webhook Delivery

Convoy is an enterprise-grade webhook gateway for secure, scalable, and reliable event delivery. It allows developers to manage both incoming and outgoing webhooks with features like retries, signatures, rate limiting, and detailed observability.

Webhook Delivery

Hookdeck is a webhook infrastructure platform that helps developers receive, manage, and send webhooks reliably. It acts as a middle layer to handle queuing, rate limiting, and retries, ensuring no events are lost while providing full observability.