Public-APIs 
This is an attempt to categorise different APIs scoured from the web which make their resources available for consumption.
Items marked with 
are open-source
Items marked with 💸 are trial based APIs
Table of Contents
APIs
Advertising
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Analytics
| API |
Description |
Open/Trial |
| Amazon Mobile Analytics |
Service for collecting, visualizing, and understanding app usage data at scale. |
N/A |
| Clicky |
Allows you to extract your website's traffic data into several formats, making it easy to integrate, analyze, or store your data within your own application. |
N/A |
| Companies taking action |
API access to the "companies taking action" list from SBTI. |
N/A |
| DitchCarbon API |
DitchCarbon provides API access to their dataset of company and product carbon emissions disclosures, also includes reccommended actions for each company to decarbonise. |
💸 |
| Fabric |
A platform that helps your mobile team build better apps, understand your users, and grow your business. |
N/A |
| Google Analytics |
Google Analytics provides APIs to collect, configure, and report on user-interactions with your online content. |
N/A |
| Localytics |
Interface to Localytics analytics platform. |
N/A |
| Matomo |
Matomo is an all-in-one premium web analytics platform designed to give you the most conclusive insights. |
💸 |
| MixPanel |
Analytics for mobile and web which helps you analyze the actions people take in your application. |
N/A |
| Open Web Analytics |
Provides a way to request and work with your data outside of the OWA reporting interface. |
N/A |
| Ticksel |
Friendly website analytics made for humans. Secure and powerful yet simple to use. |
N/A |
| Woopra |
Real-time website analysis tool that targets customer engagement. |
N/A |
| Zoho Reports API |
Build powerful reporting and analytical capabilities into your application. |
N/A |
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Augmented Reality
| API |
Description |
Open/Trial |
| Vuforia |
Solid SDK with robust development options. |
💸 |
| Wikitude |
Wikitude’s all-in-one AR solution includes image recognition & tracking, 3D model rendering, video overlay, location based AR. |
💸 |
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BarCode
| API |
Description |
Open/Trial |
| Dynamic QR Code |
Generate dynamic and static QR Codes. |
💸 |
| Google Barcode |
The Barcode API detects barcodes in real-time, on device, in any orientation. It can also detect multiple barcodes at once. |
N/A |
| EAN-Search |
The EAN-Search API allows you to lookup products by EAN, UPC or GTIN barcode. |
💸 |
| QR Code API |
QR Code REST API. Can create QR code images or read existing images and return the contents. |
💸 |
| QR Code Generator API |
Static and Dynamic QR code generator API |
💸 |
| Stakdek's QR Generator API |
Returns QR code image. Uses python qrcode. |
N/A |
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Big Data and Analytics
| API |
Description |
Open/Trial |
| Google Charts |
Free tool with a wide range of capabilities for visualizing data from a website. |
N/A |
| Keen IO |
Keen IO is a powerful, flexible, and scalable solution that’s literally Big Data, easy-to-implement and at your fingertips. |
N/A |
| Mongo DB |
mongoDB is ideal for developers who want precise control over the final results and processes for handling Big Data. |
N/A |
| LinkedData.Center |
a RDF graph database as a service with W3C SPARQL query and SPARQL update apis. |
💸 |
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Cryptocurrency/Crypto Wallets
| API |
Description |
Open/Trial |
| Bitcoin |
Find useful resources, guides and reference material for developers. |
N/A |
| Bitcoincharts |
You can use this API to include markets data in your websites, mobile apps or desktop applets. |
N/A |
| bitpay |
A simple, RESTful API to the most powerful bitcoin infrastructure on the planet. |
N/A |
| Block |
The most versatile and secure wallet for all your coins. |
N/A |
| BlockCypher |
BlockCypher is the infrastructure fabric for blockchain applications. |
N/A |
| BlockFacts.io |
Compliance-first digital asset data with REST and WebSocket API support. Real-time cryptocurrency data from multiple exchanges via a single unified API. SDKs for integration, rich historic tick data. |
N/A |
| Coinbase |
Coinbase APIs and developer tools make building bitcoin and blockchain apps much easier. |
N/A |
| CoinDesk |
Bitcoin Price Index. |
N/A |
| Coingecko |
Free and Public Cryptocurrency API which you can use without an API key. |
N/A |
| Coinlore |
Cryptocurrency tick data API. |
N/A |
| CoinMarketCap |
Cryptocurrencies Prices. |
N/A |
| coinpaprika |
Cryptocurrencies prices, market capitalization, volume and more. |
N/A |
| CryptoCompare |
Cryptocurrencies Comparison. |
N/A |
| Cryptonator |
Cryptocurrencies Exchange Rates. |
N/A |
| Coinigy |
Interact with Coinigy Accounts and Exchange Accounts Directly. |
N/A |
| Covalent |
Multi-blockchain data aggregator at one unified API. |
N/A |
| Exchange Rates API |
Market Prices and exchanges rates api. |
N/A |
| PENDAX |
Javascript SDK for Trading, Data, and Websockets for FTX, FTXUS, OKX, Bybit, & More. |
N/A |
| Poloniex |
US based digital asset exchange. |
N/A |
| ShapeShift.io |
Exchange between cryptocurrencies without an account. Well documented API for easy use. |
N/A |
| Technical Analysis |
Cryptocurrency prices, technical analysis and sentiment detection. |
N/A |
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Calendar
| API |
Description |
Open/Trial |
| CalendarIndex |
Worldwide Holidays and Working Days API. |
N/A |
| DigiDates API |
Rest API for date and time calculations. |
|
| Holiday API |
Public holiday API service for several supported countries. |
N/A |
| OpenHolidays API |
Public and school holidays for European countries via an open REST API. |
|
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Captcha
| API |
Description |
Open/Trial |
| Anti-Captcha |
Access to Anti-Captcha’s API. |
N/A |
| ProxyCrawl |
Crawl and scrape websites without the need for proxies, infrastructure or browsers. We solve captchas for you and prevent you being blocked while speeding up your development. |
💸 |
| Google reCAPTCHA |
ReCAPTCHA lets you embed a CAPTCHA in your web pages in order to protect them against spam and other types of automated abuse. |
N/A |
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Check-In
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Commerce
| API |
Description |
Open/Trial |
| Commerce Layer |
Commerce Layer is a headless commerce platform that lets you add global ecommerce capabilities to any website, mobile app, chatbot, or IoT device, with ease. Using the language, CMS, and tools you already master and love. |
N/A |
| envoice |
Invoicing for online businesses. Simplify your invoicing process and get paid online with a debit or credit card via your payment gateway. |
N/A |
| koomalooma |
A Loyalty BPaaS (Business Process as a Service) for mobile and web companies. Merchants issue points for actions their customers/users make, for example a purchase or a referral. koomalooma takes care of all the rest, from signing up users, keeping track of points and delivering rewards in over 80 countries. |
💸 |
| Moltin |
Unified APIs for inventory, carts, the checkout process, payments and more, so you can focus on creating seamless customer experiences at any scale. |
N/A |
| Stripe |
Allows both private individuals and businesses to accept payments over the Internet. |
N/A |
| Repetiti |
Repetiti 3d Printer Management Service, access and control 3d Printers easily. |
|
| Braintree |
Specializes in mobile and web payment systems for ecommerce companies. |
N/A |
| Yellow Pages API |
Get data for all categories of businesses in any city of the US. |
|
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Communication
| API |
Description |
Open/Trial |
| Africa's Talking |
Access African telco services through a HTTP API. |
💸 |
| iP1sms |
Send and receive SMS messages worldwide. |
💸 |
| Eqivo |
Telephony/Programmable-Voice API platform. |
|
| MailGun |
Transactional Email API Service For Developers. Free first 10000 emails per month. |
💸 |
| Nexmo |
Make and receive phone calls, send and receive SMS worldwide. Libraries in Node, Ruby, Java, PHP, .NET & Python. |
💸 |
| Sakari |
Send and Receive SMS to over 200+ countries around the world. Send one or one million messages from a single API call. |
💸 |
| Telnyx |
Build Voice, SMS, Fax, Networking and Cellular IoT applications on a private, purpose-built global communications network. |
💸 |
| The SMS Works |
The SMS Works provides a low-cost, reliable SMS API for developers. Pay only for delivered texts, all failed messages are refunded. |
💸 |
| Twilio |
APIs for SMS, Voice, Video and more. |
💸 |
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Content
| API |
Description |
Open/Trial |
| Bible |
Lightning-fast Bible API, featuring support for over 200+ translations and counting. |
|
| Bible |
JSON API for public domain and open bible translations. |
|
| Fruits API |
API GraphQL with information on fruit trees of the world. |
|
| Jokes |
Full featured Jokes API |
💸 |
| Perfect Tense API |
The Perfect Tense API is the only spelling and grammar checking API that uses artificial intelligence to correct all of your text automatically in one call. |
💸 |
| qKast Channel Content |
Access live content collections sourced from any page around the web. |
N/A |
| Random Data Generator |
API Generator for telephones, text, numbers, passwords, names, social security numbers, and cards. |
💸 |
| Random Facts |
Random Facts API |
💸 |
| SLF |
German city, country, river, database. |
|
| Today in History |
Daily historical events, births and deaths API. |
|
| Wikipedia |
Free multilingual Encyclopedia. |
N/A |
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Currency
Публичный список API со всего интернета, который поддерживает сообщество: сервисы открывают доступ к своим ресурсам, а все записи собраны в одном README и разбиты по категориям.