SYSTRAN.io platform is a collection of APIs for Translation, Multilingual Dictionary lookups, Natural Language Processing (Entity recognition, Morphological analysis, Part of Speech tagging, Language Identification...) and Text Extraction (from documents, audio files or images).
Get weather and weather forecasts for multiple cities. See more: https://openweathermap.org/
The IEX API is a is a free, web-based API supplying IEX quoting and trading data.
MyAllies News delivers real-time news and stock pricing from across the globe and information on the latest breaking business and financial news.
Botometer (formerly Truthy BotOrNot) checks the activity of a Twitter account and gives it a score based on how likely the account is to be a bot. Higher scores are more bot-like.
TripIt organizes travel plans into an itinerary that has all of your trip details in one place. Simply forward confirmation emails to [email protected] and TripIt will automatically build an itinerary for your trip that you can access anytime, either online or from a mobile device. With the TripIt API, you can... Add travel information to a TripIt account, enabling: Instant availability of clean, professional looking itineraries accessible on the web or via mobile device Seamless calendar integration via TripIt’s iCal feeds feature Access to many third party productivity applications that use the TripIt API Import travel information from a TripIt traveler’s account, enabling: Seamless email import technology for your customers to add travel plans to your application Insight into a traveler’s entire trip (air, hotel, car, restaurants, meetings, etc.) Outputting travel data to social network applications such as Facebook and LinkedIn
FaceRect is a powerful and free API for face detection. It finds faces (both frontal and profile) on the image specified by URL or uploaded as a file and is able to find multiple faces on a single photo, producing JSON output with a bounding box for each face found. Check out visual demo here: http://apicloud.me/apis/facerect/demo/. Note that additionally FaceRect can find face features for each detected face (eyes, nose and mouth). For more precise face feature detection please see our FaceMark API: https://www.mashape.com/apicloud/facemark
Add TV information to your website or app with our easy to use REST API. The TVMaze API uses JSON and conforms to the HATEOAS / HAL principles.
The Skyscanner API lets you search for flights & get flight prices from Skyscanner's database of prices, as well as get live quotes directly from ticketing agencies.
The TransLoc PublicAPI is a RESTful API which allows you to incorporate real-time vehicle tracking information into your web or mobile applications. It exposes several resources that allow you to access real-time information about transit systems tracked by TransLoc Inc.
Checks for fake DNS as well as uses regex functions to check the email for the right length and accepted characters. For example it will mark as valid an email like '[email protected]' but it will recognize as a fake '[email protected]' (because of the not existing domain)
Live currency and foreign exchange rates by specifying source and destination quotes and optionally amount to calculate. Support vast amount of quotes around the world.
An API for interesting facts about numbers. Provides trivia, math, date, and year facts about numbers. For example, "5 is the number of platonic solids", "42 is the number of little squares forming the left side trail of Microsoft's Windows 98 logo", "February 27th is the day in 1964 that the government of Italy asks for help to keep the Leaning Tower of Pisa from toppling over"
Enter your name and the name of your partner/lover/crush to find Love compatibility & chances of successful love relationship.
Free Search API with 1 million free queries per month. Web Search More than 2 billion pages indexed. English, German and Chinese results. Sorted by relevancy. News Search News articles from newspapers, magazines and blogs. Sorted by publishing date, with author and article image. Trending News Trending news, grouped by topic. Topics sorted by buzz (number of sources reporting on same topic). One main article per topic + related links. Trending Topics Trending news, grouped by topic. Topics sorted by buzz (number of sources reporting on same topic). All full articles per topic, sorted by publishing time. Suggestions Suggestions with auto completes for query substrings and corrections for misspelled terms.
Simple and free currency converter. Insert an amount, what currency to convert from and what currency to convert to. This API is free to use!
The Voice RSS Text-to-Speech (TTS) API allows conversion of textual content to speech easier than ever. Just connect to our Text-to-Speech (TTS) API with a few lines of code and get verbal representation of a textual content.
Browse RapidAPI's list of the Top Free APIs. These APIs are open to the public and are free to use (or have a freemium model). This is the perfect place for developers to browse APIs for testing. You'll find tons of great APIs to provide the data necessary to integrate into your website, software app, or mobile apps. All APIs return a response in JSON (and sometimes in XML). You'll be able to access each web API in the programming language and SDK of your choice:
RapidAPI is your number one platform and source to find the perfect REST API (or APIs) that you need.
Try using one of the APIs in this collection for your next API project idea.
You'll find tons of great APIs to help enrich your application including URL shorteners, social media, ip geolocation, batch geocoding, maps, natural language processing, weather data, and tons more.
Learn more about types of APIs.
Free APIs (often referred to as public or open APIs) are APIs that developers can use at no cost to them (like many of the APIs listed in this collection). Unlike freemium APIs, free APIs on RapidAPI no credit card input.
Freemium APIs are RESTful APIs that allow a certain number of requests before being charged. For example, the Spoonacular API has a freemium pricing plan that allows developers to use their API for 50 requests/day before being charged for overages. Credit cards are required for freemium APIs in case developers incur overages.
According to a top quora answer, a good API would include:
Documentation is important, if not essential.
Simplicity allows to quickly start to use an API and to be productive with it without having to constantly dive in the docs on each step.
Consistency is important because it eases learning. If similar functions have similar parameters in same order, you memorize a schema, not lot of different functions.
Completeness is the capability to answer all user needs without using workarounds, complex code, or having to open issues to ask for missing features.
Flexibility is also trying to answer a maximum of user needs.
The Java API for I/O provides such flexibility, allowing to read and write binary and textual content (with various encodings), buffered or not, with custom classes, etc.
Make sure to check out the Last Call RapidAPI blog to learn how to use these APIs.
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Still looking for more open data APIs, open source APIs, or API tools? Check out the Top 50 Most Popular APIs on RapidAPI.com, or search APIs by keyword.
What fun or exciting APIs are we missing from this list? Have a question about a specific integration, dataset, language, interface, or developer portal? Let us know at the blog.
Some of the most popular APIs on RapidAPI include:
See the list of Top 50 APIs.
RapidAPI is an API Marketplace for developers to find, connect, and manage their API connections. Find the APIs that you need for your project, embed the API into your app, and track usage of all your APIs through a single dashboard. If you have an API you've created, use RapidAPI to make it available to hundreds of thousands of developers already utilizing APIs through RapidAPI.
An open API (often referred to as a public API) is a publicly available application programming interface that provides developers with programmatic access to a proprietary software application or web service. APIs are sets of requirements that govern how one application can communicate and interact with another.
There are four main types of APIs:
The Skyscanner API is completely free to use on RapidAPI.
The Zomato API Basic Plan is free up to 1,000 requests/day.
There is an API called Cricket Live Scores that provides real-time data for Cricket games and matches. Learn more how to use the API.