IMVDb

The Internet Music Video Database (IMVDb) is a large online collection of music videos, artists, and credits. Users can create an account with IMVDb to browse and find new popular music videos, create playlists, help expand the database, and share their findings with others. IMVDb hosts an API that allows developers to easily retrieve metadata from their database. This information includes artist name, playcount, year, associated images, entity names, credits, links to external media, and more. IMVDb also hosts an API Sandbox that allows demo testing of their API without requiring an API key. IMVDb recommends developers stay tuned for more releases, as the API is currently in Beta mode.

Namey

The Namey API access the U.S. Census Bureau to combine last and first names to create randomized names. The API can be applied to random user profile generation in a social network setting. The request can be customized by gender, rarity of name, number of names to return, and other considerations. The API is accessible for free using a JSON request.

Everyone

The RESTful EveryoneAPI gives developers a way to access and collect cellular data by making simple HTTP requests. The API accepts a phone number and will return applicable demographic data on the user, such as name, gender, location, and address. Usage pricing with EveryoneAPI is determined on a per successful lookup basis, making the API scalable for small to enterprise business situations. To begin, EveryoneAPI requires an account ID and access token for authorization.

Fixer.io

Fixer.io is an API that returns foreign exchange rates based on daily and historical feeds from the European Central Bank. These foreign exchange reference rates are generally updated by 3pm Central European Time. The API quotes rates against the Euro by default, but users can request quotes made against a different currency.

Locator Centric

The Location RESTful API hosted by Locator Centric supplies businesses of any scale with data specific to consumer locations. 3 million location points may be queried by searching by state, city, postal code, specific coordinates, as well as points of interest. The JSON responses can return data in 40 different languages and dialects.

Wikisearch

Wikisearch is a semantic search API that helps you find the specific Wikipedia page you’re looking for. It's designed to work even if you don’t remember its exact title, or have only a vague remembrance that it relates to some specific topic.

Taxi Fare Finder

The value of Taxi Fare Finder API is to find the rate between two locations. As the fee might vary according to every place, the site features a list of more than 20 entities that include United States, UK, Australia, Netherlands, Belgium, New Zealand, India, Spain and China. This API has a secure connection via SSL. Some of the properties in JSON protocol cover name, locale and distance. To get a taxi fare, the required parameters are key, origin and destination, while the optional parameters are callback and traffic. More properties encompass initial fare, total fare, currency, percentage, and rate area. Support is available for developers, who can find a taxi calculation in the main page of the site.

Passwd.me

If developers have been looking for a different, yet strong password protection API, Passwd could be the ideal documentation for app creation. Three categories can be seen in the API site to classify password security: secure, super secure and insanely secure. Nowadays it is not enough to have the same access code for multiple sites, that is why a good combination of letters and numbers from 8 to 62 characters might work to prevent unwelcome access from hackers. The API features JSON and JSONP protocols with the parameters of name, type and values. Simple examples, and immediate support available for developers.

RNAcentral

RNAcentral allows users to access RNA sequence data stored in multiple expert databases. The RNAcentral API is web-browsable, which means that data can be served in both human- and computer-friendly formats. Most of the data available through RNAcentral can be integrated into other systems and applications using the API.

OpenCage Geocoder

OpenCage Geocoder combines multiple geocoding systems and lots of open data to provide geocoding and reverse geocoding services that cover the entire world. Users are free to display geocoding results on any type of map and even use those results for commercial purposes. The OpenCage Geocoder API does not currently support bulk geocoding, but users are encouraged to request it if they want it.