Best ClickSend REST API v3 Alternatives (2026)

#Documentation This is the documentation for the partner endpoint of the BigOven Recipe and Grocery List API. The update brings with it Swagger-based documentation. [Swagger](http://swagger.i...

Validate phone numbers globally

Alibaba's enterprise SMS service — high throughput, templates, delivery reports, international SMS

# Introduction [Api2Pdf](https://www.api2pdf.com) is a powerful PDF generation API with no rate limits or file size constraints. Api2Pdf runs on AWS Lambda, a serverless architecture powered by Am...

Documentation of the Billbee REST API to connect a Billbee account to external aplications. ## Endpoint The Billbee API endpoint base url is https://api.billbee.io/api/v1 ## Activation You hav...

## Overview The JSON REST API allows you to submit and receive [BulkSMS](https://www.bulksms.com/) messages. You can also get access to past messages and see your account profile. The base URL to...

API for blocking phone calls with Call Control. Data is from crowdsourced community blacklist from 12+ million users and government agencies (FTC, FCC, IRS) Try with api_key 'demo', hit explore abo...

CallFire

Validate international phone numbers

The Conversation API enables you to build conversation features where communication can take place across multiple mediums including IP Messaging, PSTN Voice, SMS and WebRTC Audio and Video. The co...

The Conversation API enables you to build conversation features where communication can take place across multiple mediums including IP Messaging, PSTN Voice, SMS and WebRTC Audio and Video. The co...

CreatorKit is a powerful tool to help automate the creation of UGC-style videos with AI. Use a website URL to generate a video automatically complete with a script and visuals extracted from the we...

# About CROssBAR & data **CROssBAR**: Comprehensive Resource of Biomedical Relations with Deep Learning Applications and Knowledge Graph Representations CROssBAR is a comprehensive system that inte...

D7 SMS allows you to reach your customers via SMS over D7's own connectivity to global mobile networks. D7 provides reliable and cost-effective SMS services to businesses across all industries and ...

The departureboard.io is a high performance API written in Golang. Its goal is to provide to main functions:<br><br> (1): A JSON API interface to the legacy National Rail SOAP API: Giving developer...

This is the documentation for the ElevenLabs API. You can use this API to use our service programmatically, this is done by using your xi-api-key. <br/> You can view your xi-api-key using the 'Prof...

Generate random fake identities (name, address, email, phone , credit card info etc). [Click here to subscribe](http://fungenerators.com/api/fakeidentity/)

This REST-API enables you to query for private transport sharing offers provided by companies and cities in Germany, Netherland and Austria. You can search for informations about the rental statio...

With the Freesound APIv2 you can browse, search, and retrieve information about Freesound users, packs, and the sounds themselves of course. You can find similar sounds to a given target (based on ...

The following are the specifications for the APIs to be implemented at the Health Repository end if an entity is only serving the role of a HIU. The specs are essentially duplicates from the Gatewa...

This interactive documentation is using your API key which is filled in automatically, you can find and change this in [your dashboard](https://www.meteosource.com/client). Using the `GET` butto...

Musixmatch lyrics API is a robust service that permits you to search and retrieve lyrics in the simplest possible way. It just works. Include millions of licensed lyrics on your website or in your...

<div class="Vlt-callout Vlt-callout--critical"> <i></i> <div class="Vlt-callout__content"> <h4>Applications V1 is deprecated</h4> This version of the API has been deprecated. Please use <a href...

The Conversion API allows you to tell Nexmo about the reliability of your 2FA communications. Sending conversion data back to us means that Nexmo can deliver messages faster and more reliably. The ...

The William Hill Numbers API uses a single method that allows you to generate random numbers for your application. Numbers can either be unique or can be produced with the chance that some might be...

Worldwide Phone Number Lookup & Verification API

Phone number validation

Rest Api for Phone specifications

Phone number validation

Whatsapp number validation

Below is the documentation for the API calls. You can try them out right here.

# Introduction The SearchLy API provides similarity searching based on song lyrics. # Operations The API allows for the `/similarity/by_song` operation, which allows clients to search the similari...

## Introduction The Shorten.rest API allows you to programmatically create short URLs (an &apos;alias&apos;) for longer URL (a &apos;destination&apos;). Each alias you create can be used to redi...

<p>Use our API for systems integration or to build your own use cases. Sample scenarios include but are not limited to:</p><ul><li>2-way integration: Triggering of Signls and updates in the third p...

The SimplyRETS API is an exciting step towards making it easier for developers and real estate agents to build something awesome with real estate data! The documentation below makes live requests ...

sms77.io Swagger API. Get your API-Key now at sms77.io.

The spoonacular Nutrition, Recipe, and Food API allows you to access over thousands of recipes, thousands of ingredients, 800,000 food products, over 100,000 menu items, and restaurants. Our food o...

Multi-channel messaging API — SMS, email, voice, international messaging with delivery tracking

SIP trunking, SMS, MMS, Call Control and Telephony Data Services.

<p>The current api version is <b>v3.4</b></p><br><br><p>The api methods listed below can be called directly from this page to test the output. You might set the api_key to pre-authenticate all requ...

The SMS Works provides a low-cost, reliable SMS API for developers. Pay only for delivered texts, all failed messages are refunded.

Phone number validation & carrier lookup

The Vonage Integration Suite API enables call control and webhooks for call events. Your application must subscribe to the VonageIntegrationSuite API suite to use this API.

The VTEX Headless CMS is a no-code management system for storefront content. That means you can store your content as structured data in a layer decoupled from the frontend and use the VTEX Head...

WinSMS RESTful API

Chinese SMS API — domestic and international messaging, templates, signatures, delivery reports. REST API