Best Free Communications Platform as a Service (CPaaS) of 2025

Communication Platform As A Service, smsmode© offers complete mobile messaging routing. Connect with your customers anywhere in the world using our innovative and powerful tools. smsmode© integrates seamlessly with your existing tools, allowing you to maximize their potential by integrating mobile messaging. Use our REST, SMPP, and plugins to build these custom integrations for your applications, CRMs, ERPs, and more. Our documentation and experts will help you achieve your goals! European solution GDPR compliant ISO 27001 & 27701 99.95% SLA Responsability Europe CSR Commitment

Digital Samba is a video conferencing solution that uses innovative features and technology to fulfil its customers' communication and collaboration needs. Clients use the platform for daily business meetings, webinars, online learning, application development, etc. The platform is the result of 19 years of experience at the forefront of the video conferencing space. This experience has helped create a feature-rich platform ready to adapt to changing technologies and workplace practices. Digital Samba's customers include world-renowned companies like McDonald's, Deloitte, Ferrari, Raiffeisen Centrobank, American Express and more. Thanks to the Digital Samba Embedded SDK, you’ll be able to integrate and control a full video conference experience inside your application by simply copy-pasting a few lines of JavaScript code.

Every platform supports authentication, voice and SMS APIs. It allows you to communicate faster and more efficiently, thanks to tech innovations. Spring Edge's cross-platform APIs make it easy to integrate with any technology platform that follows industry standards. You can send voice messages or SMS text messages using Spring Edge's innovative cross platform APIs. InstantAlerts provides the best platform for voice and messaging communications. Our highly scalable web interface allows you to send instant messages and bulk sms via api or web-based platform. Spring Edge is committed to providing the best industry services to its clients. Our technical support engineers are available 24/7 to answer your voice and sms queries.

Bird (formerly MessageBird), the next-generation CRM, is a powerful tool for marketing, sales, and payments. It powers over 5 trillion messages per year across Email, WhatsApp, and SMS. Bird helps leading brands grow more cost-efficiently through personalized interactions via Email, SMS, or WhatsApp. Bird's APIs and applications are used by the most innovative companies in the world to build communication solutions. Start today and communicate with your customers on any channel, for any purpose, anywhere in the globe. Marketing messages, push notification, order updates, shipping alerts, and more. Operational bottlenecks limiting your growth? Automated conversations and workflows can be used to collect critical information, reduce manual tasks, implement Self-Service flows, and route chats directly to the right agent. Our auto-scaling, reliable APIs are available with comprehensive documentation, complete API references, and intuitive SDKs.

MSG91, a cloud communication platform, helps businesses and developers seamlessly add communication to services and software via communication APIs (SMS. Email, Voice. RCS. WhatsApp and many more) and ready-to use solutions like Cloud contact center or customer segmentation products.

The complete in-app collaboration API and SDK. Add contextual activity feeds, chat, and document collaboration directly into your apps to increase user engagement, improve in-app retention, and reduce customer churn. Modern apps need advanced collaboration features. Period. And let’s face it — a lot of app developers struggle to prioritize building their core functionality versus adding the contextual collaboration features that keep users engaged and productive. The big B2B tech players are already acquiring or building out chat, secure file sharing, contextual activity feeds and threaded conversations functions, which means every app is going to need them to stay competitive. That’s where Weavy comes in.

One Platform for Realtime Communication: A platform to build and operate real-time interactivity for web, mobile, AI/ML, IoT, and Edge computing applications Faster & Easier Deployments: SDK support for 50+ mobile, web, server, and IoT environments (PubNub & community supported) and more than 65 pre-built integrations with external and third-party APIs to give you the features you need regardless of programming language or tech stack. Scalability: The industry’s most scalable platform capable of supporting millions of concurrent users for rapid growth with low latency, high uptime, and without financial penalties.

EmailLabs is a cloud-based email API and SMTP service designed to send transactional and marketing emails. The unique know-how and partnership between well-know Inbox Service Providers ensure all emails sent from our servers being tailored to the requirements of foreign providers like: Gmail, Yahoo or Hotmail as well as local ISPs such as WP.pl, Onet.pl, Seznam.cz, Web.de, Seznam.cz or Libero.it. We take care of overall deliverability to make sure your messages land in customers’ inboxes, promotions or Offers tab. EmailLabs platform can be easily integrated with any email system or application that allows you to add a third party SMTP server. The whole setup process takes only 5 minutes.

ApiRTC is a library that allows developers to integrate real-time communication (chat, audio and video) into a website or mobile application. The WebRTC technology is used behind the scenes. This means that media flows are encrypted and exchanged peer-to-peer whenever possible. A media relay (TURN server), may be needed in other cases. ApiRTC, the entry point to our platform, will manage all connection establishments including user presence and media establishment. ApiRTC library comes in a variety of formats depending on the integration you require. It can be used for web and hybrid apps based Javascript or native iOS and Android applications. Apizee solutions for audio and video communications are based upon the WebRTC standard. This technology is rapidly becoming compatible with Internet browsers. This choice allows for audio/video streaming solutions to be available in all PC, tablet, and smartphone environments.

Headquartered in Silicon Valley, Gupshup is a leading conversational messaging platform that enables businesses to build engaging conversational experiences seamlessly across 30+ messaging channels using a single API. Gupshup offers an easy-to-use omnichannel messaging API, advanced bot-building platform and mobile marketing tools. Gupshup's messaging platform handles over 6 billion messages per month enabling over 39,600 businesses send messages to several billion users across popular messaging channels such as SMS, Voice, WhatsApp, Mobile Web, Android RCS, Instagram, Twitter, Telegram, WeChat, FB Messenger, Slack, Viber, Skype and many more. Our Single API solution for 30+ messaging channels has enabled businesses to easily integrate 1-way and 2-way messaging on WhatsApp with fall back to SMS connectivity in over 225 countries with multi-channel auto routing option. Additionally, Gupshup Bot platform supports over 36,000 bots and can easily handle WhatsApp FAQ Bots with live agent handoff for various customer support use cases

Any product can be enhanced with live video and audio. You can start with our Daily Prebuilt user interface or create your own layouts using our APIs. We offer a fully-supported Daily Prebuilt user interface, as well as lower-level APIs that allow you to have complete UI/UX flexibility. Start by copying our sample repos. You can switch from prebuilt to customized at any time, while still using the same APIs. Daily Prebuilt is our plug and play embed. It's a fully functioning video chat that supports HD screen sharing, text chat and recording. For developers building custom video UI/UX. You can control audio and video tracks. Daily call object allows you to control layout and workflow. Automatic bandwidth management that responds to changing network conditions.

Authkey.io stands as an exceptional Enterprise Omni Channel API platform, offering an extensive suite of communication tools and APIs meticulously designed to empower businesses in their quest for efficient and secure customer engagement. SMS API:A seamless communication symphony with its event-based messaging prowess. This facet encompasses the seamless orchestration of Bulk SMS delivery, transactional messages, one-time passwords (OTP), and the authentication process through call-based interfaces. Voice API: This dynamic capability ensures the delivery of OTPs through vocal messages, providing an alternative avenue that ensures the recipient's prompt access. Email API: Reliable and rapid delivery of emails, serving critical functions such as password verification, account creation, OTP distribution, and email validation. WhatsApp Business API: The contemporary business landscape requires a direct conduit to reach the massive audience on the WhatsApp API facilitate this engagement, enabling businesses to establish a direct line of communication with their audience. Two-Factor Authentication (2FA) API: Seamlessly dispatching OTPs, verifying logins, and bolstering the security architecture of business software, CRM systems.

Dyte's Video SDK and APIs are SOC 2, GDPR, and HIPAA compliant. Embed scalable, customisable and secure video call into your web or mobile app with just few lines of code. It is compatible with Android, iOS, React Native, Angular and many more languages. With an uptime of 99.99%, industry-leading documentation, UI kit and out of the box plugins, customize the video experience within minutes.

As a global leader in customer communication solutions, we empower businesses to elevate their customer interactions. Our expertise lies in navigating the complexities of modern consumer engagement, driving growth, and enhancing customer satisfaction through streamlined, secure processes. GreenAds Global offers a comprehensive suite of tools to boost your customer outreach: WhatsApp Business API integration Rich Communication Services (RCS) AI-powered chatbots High-volume SMS campaigns Advanced voice messaging systems Partner with us to transform your customer engagement strategy and stay ahead in today's dynamic business landscape

ConnectyCube, a cloud-based collaboration and communication platform, offers a variety of real-time communication services and tools to developers and businesses. It offers SDKs for different platforms, such as Flutter, JavaScript and NativeScript for React Native and NativeScript for Cordova and Angular for iOS and Android. This makes it easier for developers and designers to integrate features like real-time chats, video chats, push notifications, user authentication, writeboards, chatbots, meeting recordings and other communication tools into their apps. You can focus on developing your app. Add WhatsApp-like messaging, videocalling and other features to your iOS, Android and Web application to make them more user-friendly and competitive. Give your audience the chance to stay in touch with friends, meet people, discuss events, news and more.

Ably is the definitive realtime experience platform. We power more WebSocket connections than any other pub/sub platform, serving over a billion devices monthly. Businesses trust us with their critical applications like chat, notifications and broadcast - reliably, securely and at serious scale.

Our reliable and simple SMS and Voice 2FA product allows you to validate leads and block bad actors so that you can engage worldwide customers. RingCaptcha's 2-factor authentication (2FA), provides a screen to block fake leads, while our backend code identifies and blocks suspicious requests and adds them to a blocklist to protect your business. RingCaptcha allows you to validate your leads so your sales team can know which ones are genuine and which are not. Review leads to identify competitors and stop them from getting inside information about your business. To screen repeat trial users who are not interested in purchasing your product, capture user data and increase costs. Get real leads, not freeloaders! A single click can often be all it takes to start a sales process. Use 2FA by SMS/Voice for real leads.

Mobile communication and payment solutions. Combine messaging channels such as WhatsApp with innovative payments to create Conversational Commerce. We help companies communicate. Our customers use voice, SMS, Voice, and the most popular chat apps, WhatsApp, Apple Business Chat, Google RCS, and WhatsApp. Let the AI bot handle the talking and start a conversation in the channel that your customers prefer. To increase conversions, integrate commerce into the conversation. CM.com is a payment service provider licensed by Apple Pay, Google Pay and WeChat Pay. It offers a variety of options for all channels with Apple Pay and Google Pay as well as Credit Cards and local payments such as Bancontact and Bancontact. CM.com also offers a ticketing platform that helps museums, stadiums and festivals sell and manage any type or ticket. The Customer Data Platform allows you to market on a personal level. Identity and esign solutions ensure authentication in all transactions

Video conferencing infrastructure for a world that is video-first. It is easy to integrate native iOS, Android and Web SDKs to add audio & video conferencing to your applications. These experiences are possible in a virtualized, remote-first world. This revolution is fuelled by 100ms' best in class quality and ease-of-use. Our team has been working with live video for years. We have solved this problem at world-class scales in different network and device environments. The fastest integration time is essential for a great infrastructure provider. 100ms powers resilient audio/video right out of the box and allows you to increase the speed of iteration 10x. You can host up to 10K people, stream to Youtube, or do custom layout recording. We have simplified the SDK layer and made it fully customizable. You can add up to 1000 hosts to a video conference without compromising audio-video quality.

PageGate is an SMS messaging service that sends SMS and texts to mobile phones, cell phones, and other wireless devices. You can send messages in a variety ways, including networked computers and e-mail. Messages can also be sent via the Internet (SNPP/WCTP, SMTP), modems such as UCP, GSM and TONE, or direct serial connections (TAP). PageGate is a high-capacity software application with built-in redundancy and failover capabilities. This ensures that urgent messages are delivered promptly. NotePager Pro allows you to send text messages or SMS to mobile phones, wireless devices, and cell phones via a simple desktop application. NotePager Pro can send SMS messages or text messages via an Internet connection, modem, or cellular modem.

With over 700 direct carrier connections and 60+ offices on 6 continents, Infobip is a global leader in omnichannel communication. We make it our business to simplify how brands connect with, engage and delight their customers at global scale. Our programmable communications platform delivers a suite of tools for advanced customer engagement and support, plus security and authentication. We make this available to you across the widest range of communication channels possible. THE INFOBIP ADVANTAGE (1) Personalized omnichannel customer connections Achieve deeper customer engagement across the widest selection of local and global channels, including: SMS, RCS, WhatsApp, voice, video, email and the most popular chat apps. (2) Global reach, local presence Our 60+ offices around the world allow us to react faster. We provide 24/7 customer support, technical solutions in-line with needs and local requirements — based on proven best practices. (3) Full stack customer engagement Deliver better outcomes for your business by enhancing your communications with fully integrated contact center, marketing automation, and chatbot building solutions informed by our customer data platform.

mesibo allows you to quickly add powerful real-time messaging, group chat and voice, as well as video calls, to your mobile and web apps. When designing mesibo APIs, the main objectives were reliability, performance, as well as scalability. APIs can be as complex as the universe, making apps unnecessarily complicated and error-prone. Instead, we have worked hard to make mesibo APIs simple and powerful. This section will discuss mesibo's real-time APIs in greater detail. To learn more about APIs, it is recommended that you refer to the source code for one of the mesibo samples apps on GitHub. This makes it easier to write cross-platform code on any platform. We will now describe APIs using name and parameters in the sections below.

Flowroute was the first carrier to be software-centric in 2013. To meet carrier-grade requirements, we created the Flowroute HyperNetwork™. It offers the programmability and automation of cloud computing. Flowroute SIP Trunking allows you to connect an existing telephone adapter or PBX system in just a few steps. Customers can scale up or decrease with unlimited call capacity and only pay for the minutes used. Flowroute's SIP trunking inbound provides unlimited concurrent call capacity. You can say goodbye to capacity planning. To help you scale your voice services, new instances are created dynamically as your volume increases. Flowroute delivers outbound audio over the shortest route possible to improve call quality and reduce call costs locally and internationally.

Realtime Chat SDK & Messaging API for Apps & Websites. ChatCamp platform allows you to integrate in-app messaging into your mobile apps and websites. Product architecture for scaling infrastructure on the move. This system is perfect for managing thousands of users at once. To provide the best service, we use the Google Cloud Platform's world-class infrastructure. To ensure data security and privacy, we follow industry best practices. You should be focusing on building your application. There's no need to worry about creating chat from scratch. We've got you covered. To build a fully functional chat app, you can use our chat SDK or messaging API. Android, iOS, Javascript, and Platform API.

You can save your time building UI and features for your video-calling application. You can integrate video calls into an application with just 5 lines of code. To establish connection between your app and Video SDK, generate an API Key. It allows for secure, end-to-end connection between your app and our servers. Install the JavaScript code on your website. You can create an interactive video calling app in just a few lines of code. Analytics Dashboard allows you to track all usage and provide manual operations control. Everything you need to create custom and branded live shopping experiences at any scale for eCommerce brands. Everything you need to create custom, branded, highly secure telemedicine communication SDKs and APIs at any scale.