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2Factor.in provides extremely simple to use APIs for implementing 2Factor Authentication ( Phone verification ) with just 1 API Call. Best Part of 2Factor.in solution is its Fast, Reliable & Economical too.

Words API lets you retrieve information about English words, including definitions, synonyms, rhymes, pronunciation, syllables, and frequency of usage. It also can tell you about relationships between words, for instance that "math" has categories like "algebra" and "geometry", or that a "finger" is part of a "hand".

MessageBird provides a simple and fast API for sending and receiving text messages (SMS) all over the world. Other related services are HLR-Lookup (network query) and sending and receiving Premium SMS messages.

Whatsapp API is an unofficial whatsapp API build to send messages including text, video, audio and picture to target numbers. One can send this for reaching out to near ones from their own preferred apps and send custom messages. This API is purely an unofficial API and we do not support any kind of spam messages through this API. Visit our site to know more about custom whatsapp API instance and services. E.g: whatsapp api python, whatsapp api tutorial, whatsapp api c#, whatsapp api github, whatsapp api download, whatsapp api ruby, whatsapp api android, whatsapp api php. You must agree our TOS to use this free API.

Intelligent Technologies SMS API. Allows sending and receiving of SMS messages. An account is required. Sign up for free at http://inteltech.com.au Send messages to any country in the world.

mOTP is an Open API, Alternative to sms based One Time Password. It is a hosted, secured, scalable solution for customer phone verification that works without SMS mOTP brings an innovative approach for customer phone verification. It replaces SMS based one time password, with an OTP over a missed call ( to mobile, landline phone ) Thereby eliminating any Cost, Delay & Dnd Hurdles.

Sign up for a free account at https://clicksend.com ClickSend is not a free service. Pricing can be found here https://clicksend.com/?r=pricing/

mVerify is an Open API, that is an alternative to SMS based One Time Password. It is a hosted, secured, scalable solution for customer phone verification that works without SMS. mVerify brings an innovative approach for customer phone verification as it replaces SMS based onetime password, with an OTP over a missed call ( to mobile, landline phone), thereby eliminating any cost and delay.

Style and grammar checking / proofreading for more than 25 languages, including English, French, Polish, Spanish and German. Based on languagetool.org.

Send unlimited SMS to any Indian mobile number using this API, all you need is an account from freesms8.co.in

This API will give details of recharge for various mobile operators in India. You can integrate into your mobile recharging sites or apps. The data is pullled from official telecom operator site. For Commercial purpose contact www.datayuge.in Keywords : indian recharge tariff, telecom data, recharge plans,

SMSAPI is a global SMS provider offering High Quality SMS services (BULK SMS, HLR lookup) for companies to nearly 800 mobile networks in 200 countries. Read more here: https://www.smsapi.com/rest

SMS Service Provider

Resolve DNS addresses into IP addresses and vice versa. New method: check if a port is open on a given host.

Wit.ai enables developers to build apps and devices that users can talk to.

Introducing ultra cheap Transactional SMS API for developers ( India ) Send speedy sms with fully customizable dynamic sender ids for FREE. Claim your FREE SMS Credits at http://goo.gl/fsEPSo

Validates an email address based on syntax and dns. Includes common spelling mistakes.

Improve your mail deliverability rates and protect your IP reputation by using our Free Email Verification Service. Need further help? You can contact us at http://quickemailverification.com/contact-us

Jeannie (Voice Actions) is a virtual assistant with over three million downloads, now also available via API. The objective of this service is to provide you and your robot with the smartest response to any natural language question, just like Siri. Jeannie API provides an interface to the standard functions that users demand of modern voice assistants, like chatting, controlling your devices, looking up information, creating messages and much much more. You can extend this API to your own needs. It also provides useful metadata such as sentence analysis and entity extraction that goes beyond simple chatting and voice commands. Several million users have already been in contact with this API: http://www.voice-actions.com/ Examples: https://weannie.pannous.com/api?input=hi&login=test-user https://ask.pannous.com/?input=hi Complete documentation: https://docs.google.com/document/d/1dVG_B5Sc2x-fi1pN6iJJjfF1bJY6KEFzUqjOb8NsntI/edit

The PubNub Network makes Real-time Communications Simple with an easy API. Two Functions: Send/Receive (Publish/Subscribe). We provide a web-scale API for businesses to build scalable Data Push communication apps on Mobile, Tablet and Web. Bidirectional JSON. Ask for commit access - via Twitter: @pubnub - via IRC: #pubnub on FreeNode