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DuckDuckGo Zero-click Info includes topic summaries, categories, disambiguation, official sites, !bang redirects, definitions and more. You can use this API for many things, e.g. define people, places, things, words and concepts; provides direct links to other services (via !bang syntax); list related topics; and gives official sites when available.

FREE

Sentiment analysis, stemming and lemmatization, part-of-speech tagging and chunking, phrase extraction and named entity recognition.

FREEMIUM

CloudSight API (fka CamFind API) is the image recognition and reverse image search that powers the popular mobile visual search engine app, CamFind. It is the welcomed replacement for the void left following the purchase of IQ Engines by Yahoo!. CloudSight API promises to be the best solution for state of the art image recognition and reverse image recognition, which developers can incorporate into both apps and web applications.

FREEMIUM

Check if email address really exist or not using this API and validate email id of any domain.

FREE

A fun API combining cowsay and fortune cookies.

FREE

This is a term synonym discovery service that exploits that structure of Wikipedia redirects to discover almost-equivalent terms. You can try terms like C++, or Hillary Clinton, or Mihapjungguk to see some of the results.

FREE

Flight Search API. Searches in Airblue. Other flights coming soon PIA, Shaheen Air.

FREE

Provides consistent, well-structured whois data in XML & JSON.

FREE

The "Have I been pwned?" service allows you to search for accounts (usernames and email addresses) that have appeared in data breaches that the attackers have made public.

FREE

This API provides a set of useful features for JSON data. Send me a private message to ask for more features. Enjoy :)

FREE

The most descriptive and accurate BMI Calculator API available on the internet!

PAID

The HTML to text tool tries to extract text content out of an HTML document. It ignores 'non-text' HTML content (like script, object and applet tags). Feedback on this tool is welcomed on our blog at http://blog.2partsmagic.com/2012/09/text-2-html-converter-online-tool-api/

FREE

Convert Any video into Mp3 using youtubeinmp3. Search the song convert first video into MP3

FREE

US Zipcode, County, City, and State Boundaries API: A simple & very fast API that will allow you to integrate multiple GeoJson US boundaries results into your apps and systems. This API is designed to be used programatically for optimal performance. When using the MashApe UI for queries expect significant latency issues on large result sets!

PAID

A simple, scalable API for image processing. 6px is a powerful and scalable API for image processing in the cloud. We provide the critical infrastructure so that developers can create smart image-based applications and services.

FREE

this api can give you a strong password to make you app more safety.

FREE

Face detection, face alignment, gender classification, age estimation and emotion estimation. Check our demo at: http://visagetechnologies.com/mashape/image/

FREEMIUM

Deep Learning-based emotion recognition software that reads facial micro-expressions in real-time with regular cameras.

FREEMIUM

Get the connection type,circle name and operator name using this API. Mobile number portability not supported as of now. Please get in touch with me if you would like to improve this api in any way or would like some other feature added to it. See you around!!!

PAID

This API can be used to compute a set of readability metrics for a given text. We currently support the following metrics: Automated Readability Index, Coleman-Liau Index, Flesch–Kincaid Grade Level, Flesch Reading Ease, Gunning-Fog Index, SMOG score, and SMOG Index. The service is deployed at Google App Engine and available at https://ipeirotis-hrd.appspot.com/ The code and documentation are available on Github at https://github.com/ipeirotis/ReadabilityMetrics

FREEMIUM
DuckDuckGo Zero-click Info by duckduckgo
DuckDuckGo Zero-click Info includes topic summaries, categories, disambiguation...
FREE
3065
developers
2670
followers
100%
uptime

Text-Processing by japerk
Sentiment analysis, stemming and lemmatization, part-of-speech tagging and chunking...
FREEMIUM
1319
developers
1445
followers
100%
uptime

CloudSight by imagesearcher
CloudSight API (fka CamFind API) is the image recognition and reverse image search...
FREEMIUM
1316
developers
1325
followers
100%
uptime

Verify email address by ajith
Check if email address really exist or not using this API and validate email id of...
FREE
928
developers
791
followers
100%
uptime

Fortunecow by thibaultcha
A fun API combining cowsay and fortune cookies.
FREE
666
developers
646
followers
100%
uptime

WikiSynonyms by ipeirotis
This is a term synonym discovery service that exploits that structure of Wikipedia...
FREE
655
developers
571
followers
100%
uptime

Such Flight by siddiq
Flight Search API. Searches in Airblue. Other flights coming soon PIA, Shaheen Air.
FREE
645
developers
621
followers
100%
uptime

whois by whoisapi
Provides consistent, well-structured whois data in XML & JSON.
FREE
536
developers
477
followers
100%
uptime

Have I been pwned by troyhunt
The "Have I been pwned?" service allows you to search for accounts (usernames and...
FREE
512
developers
474
followers
100%
uptime

Json Tools by thefosk
This API provides a set of useful features for JSON data. Send me a private message...
FREE
502
developers
463
followers
100%
uptime

BMI Calculator by navii
The most descriptive and accurate BMI Calculator API available on the internet!
PAID
467
developers
483
followers
100%
uptime

HTML2Text by pbkwee
The HTML to text tool tries to extract text content out of an HTML document. It...
FREE
402
developers
360
followers
100%
uptime

youtubeTOmp3 by kashyap32
Convert Any video into Mp3 using youtubeinmp3. Search the song convert first video...
FREE
340
developers
345
followers
100%
uptime

boundaries-io by VanitySoft
US Zipcode, County, City, and State Boundaries API: A simple & very fast API that...
PAID
281
developers
301
followers
100%
uptime

6px by nparsons08
A simple, scalable API for image processing. 6px is a powerful and scalable API...
FREE
271
developers
273
followers
100%
uptime

strongpassword by tabalt
this api can give you a strong password to make you app more safety.
FREE
223
developers
185
followers
100%
uptime

VT Face Detection And Analysis by VisageTechnologies
Face detection, face alignment, gender classification, age estimation and emotion...
FREEMIUM
223
developers
22
followers
100%
uptime

EmoVu by eyeris
Deep Learning-based emotion recognition software that reads facial micro-expressions...
FREEMIUM
199
developers
260
followers
100%
uptime

Indian Phone Number Info by Avneesh
Get the connection type,circle name and operator name using this API. Mobile number...
PAID
194
developers
148
followers
100%
uptime

Readability Metrics by ipeirotis
This API can be used to compute a set of readability metrics for a given text. We...
FREEMIUM
193
developers
185
followers
100%
uptime