Open Library has a RESTful API, best used to link into Open Library data in JSON, YAML and RDF/XML. Open Library has developed a suite of APIs to help developers get up and running with our data. We encourage interested developers to join the ol-tech mailing list to stay up-to-date with the latest news, or dive in with our own development team at our bug tracker or our GitHub source code repository.

With Pipedrive CRM designed for salespeople, by salespeople, you’re able to do more to grow your business. Easily build integrations with our API and reach over 90k companies in the Pipedrive Marketplace. Pipedrive is a sales CRM with an intuitive RESTful API. You can use our API to create public or private apps using OAuth and integrations via API token. Public apps and integrations work directly with Pipedrive and are available in the Pipedrive's Marketplace.

Document workflows are a huge pain. They're slow to complete and often inaccurate because they rely on PDFs. With HelloWorks, individuals are asked a few simple questions on their phone which automatically completes the PDF in the background

Public CDN API for opensource javascript, CSS and fonts libraries.

User information comes in all shapes and sizes. As an Evernote partner, you have the opportunity to give your users a unique view of their own memories, regardless of format. Because you're building with Evernote, you're building on a rock-solid platform designed to store all types of user data from images and audio to web pages and PDFs — and it's all available through our API.

Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes.

The Twilio Messaging API makes it easy to send and receive SMS and MMS messages as well as query meta-data about text messages such as delivery status, associated media, and leverage tools like Copilot to manage your messages globally at scale.

Number of the day, random number generation, number facts and anything else you want to do with numbers. Some of our API calls are public. To maintain our service level we ratelimit the number of API calls. For public API calls this is 60 API calls a day with distribution of 5 calls an hour. For paid plans this limit is increased according to the service level described in the plan.

Free IP Geolocation and IP Address Lookup Location API.

Powerful APIs and extensions allow you to build engaging video experiences into your applications and products. Allow your web application to interact with video as they're viewed. Programmatically manage your video library, metadata and events. Integrate Vidyard. Enable your users to create, send and track videos.

Use the Noun Project Icon API to tell visual stories, create real-time infographics, build interactive games, or whatever crazy idea you have.

TripAdvisor provides free, up-to-date rating content to select travel websites and apps through its Content API. The API can provide dynamic access to Tripadvisor content, and users can build their websites and applications by calling the API, parsing the response, and displaying the data from the response on their site or in their app.

Build amazing commerce solutions powered by the BigCommerce platform. Respond in real time by utlizing webhooks. Orders API lets you use the Plug in and connect features. You can access BigCOmmerce order data to boost your POS and fulfillment solutions. Storefron APIs, Catalog APIs and much more.

BlaBlaCar’s API allows to search for car sharing trips, just as the BlaBlaCar’s website does. The web service is based on REST and is available in the two formats XML and JSON.

Weather and climate data. This is version 3 of the MET Weather API. For a list of changes since version 2, see the Release Notes for v.3. The weather data API is loosely based on the REST style of web service programming. All queries are done via HTTP GET, and the results are returned as either XML or the binary format appropriate for the data, as documented by each module.

Programming Quotes API for open source projects. You need these quotes to push your self and other developers to stay motivated to their screens. Famous developers, authors and entreprenaurs have been added to provide a nicely curated list of quotes. You can call all quotes at one time or you can find out quotes about a specific author. Feel free to use and share with your friends.

Millions of users depend on their feedly for inspiration, information, and to feed their passions. Developers are welcome to deliver new applications, experiences, and innovations via the feedly cloud.

Chat with a bot about anything and everything - AI learns from people, in context, and imitates. The Cleverbot API is RESTful. You call a URL on our server and we return JSON.

Samsara provides API endpoints for interacting with Samsara Cloud, so that you can build powerful applications and custom solutions with sensor data. Samsara has endpoints available to track and analyse sensors, vehicles, and entire fleets. The Samsara API is a RESTful API. It uses standard HTTP authentication, verbs, and response codes, and it returns JSON response bodies. If you're familiar with what you can build with a REST API, then this will be your go-to API reference.

With Typeform APIs and developer tools, you can do everything from the basics, like tweak your themes and add new images to your account, to the most powerful features Typeform offers, like retrieve responses on demand and customize forms with Hidden Fields. And you can do it all without using the Typeform builder or even logging into Typeform.com!

Jikan (時間) is an open-source PHP & REST API for the “most active online anime + manga community and database”

Danbooru is an thousands of anime artist database to find good anime art. Random anime photos.

Scraping is hard, scraping at scale can be very challenging. You have to handle Javascript rendering, Chrome headless, Captcha, Proxy. Scraping Ninja is a simple API that does all the above for you. It is truly the most simple web scraping API ever.

human/api is a platform that makes human health data available through a RESTful web service. We make it very easy to securely get a human's current or past health data. The api offers accessing data of types; Blood Pressure, Heart Rate, Sleep, Body Fat, Genetics, BMI, Activity, Height, Blood Glucose, Profile, Weight, Location.

Email marketing, ads, landing pages, and CRM tools to grow your business on your terms. Now use MailChimp API to integrate all functionalities of MailChimp into your custom applications.

Hook up your server to optimize all your JPEG and PNG images on the fly.

Customize the Asana experience, leverage your data with the Asana API, and join a community of developers building with Asana.

We've designed our APIs to use open standards so developers can leverage off-the-shelf libraries. We aim to provide APIs that are as simple as possible yet still open the door to great possibilities.

JavaScript API for face detection and face recognition in the browser and nodejs with tensorflow.js. Using this API, you can predict the age, color and probable accuracy ration. Demo projects are placed inside the link.

API is designed to allow integrating the offline maps with your iOS or Android app. The best part is that MAPS.ME code is completely open, and you can hack it to your needs!

Scraper API handles proxies, browsers, and CAPTCHAs, so you can get the HTML from any web page with a simple API call!

Crawl arbitrary websites, extract structured data from them and export it to formats such as Excel, CSV or JSON. Automate manual workflows and processes on the web, such as filling in forms or uploading files. Let robots do the grunt work. Connect diverse web services and APIs, and let data flow between them. Add custom computing and data processing steps.

Automatic data extraction from articles, products, discussions and more. Diffbot uses advanced AI technology to retrieve clean, structured data without need for manual rules or site-specific training.

Discover all the incredible capabilities of our platform so that you can build context-relevant, action-oriented apps directly on top of Intercom with ease - whether you're publicly integrating your service with ours, or you're building for your own team's private usage.

Optimizely is the world's leading experimentation platform, empowering marketing and product teams to test, learn and deploy winning digital experiences, every time. Improve your product quality and velocity with feature management. Drive measurable impact with product experimentation. Optimize the experience across any platform including websites, backend code, mobile and conversational apps. Target your messaging, personalize your campaigns, and ultimately drive substantial growth for your business. Powerful, easy to use solutions, to test what messages, imagery, and offers help increase conversion, retention, and lifetime value.

Zomato APIs give you access to the freshest and most exhaustive information for over 1.5 million restaurants across 10,000 cities globally.