Compare the Top Chat SDK & API Software for Startups as of July 2025

What is Chat SDK & API Software for Startups?

Chat SDK and API providers offer tools and services that enable developers to integrate real-time chat functionality into applications. These solutions typically provide pre-built components like chat interfaces, messaging systems, and notifications, reducing the need for custom development. Providers often offer APIs that allow seamless interaction with chat services, such as sending and receiving messages, managing user profiles, and customizing chat experiences. SDKs, on the other hand, often come with libraries and documentation to help developers quickly build and deploy chat features on mobile or web platforms. Some popular chat SDK & API providers also include advanced features like video calling, chatbots, and analytics for enhanced communication experiences. Compare and read user reviews of the best Chat SDK & API software for Startups currently available using the table below. This list is updated regularly.

  • 1
    Twilio Messaging
    Twilio Chat SDK & API empowers businesses to integrate real-time chat functionality into their applications, providing a seamless and engaging communication experience for users. This robust solution supports the creation of dynamic chat environments, enabling one-on-one conversations, group chats, and even large-scale community interactions. With Twilio's Chat SDK & API, developers can easily implement features such as message history, typing indicators, and read receipts, enhancing user engagement and satisfaction. The API's flexibility allows for customization to match the brand's look and feel, ensuring a consistent user experience across platforms. Additionally, Twilio's infrastructure ensures reliable message delivery and scalability, accommodating growing user bases without compromising performance.
    Starting Price: $0.0079 per message
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  • 2
    Sendbird

    Sendbird

    Sendbird

    Sendbird’s Chat API enables developers to create comprehensive messaging systems with features like private and group chats, media sharing, and real-time updates across mobile and web platforms. The API supports advanced functionalities such as message translation, message search, user moderation, and spam protection, allowing businesses to build secure and engaging messaging experiences. With Sendbird’s developer tools, including SDKs and UI kits, developers can seamlessly integrate these features into their apps, saving time and effort in handling operational complexities. The platform is designed to scale effortlessly, meeting the needs of businesses from small startups to global enterprises.
    Starting Price: $399/month
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  • 3
    Twilio

    Twilio

    Twilio

    Twilio's Chat SDK & API empower businesses to integrate real-time messaging capabilities into their applications, enhancing customer engagement and support. The SDKs are available for both Android and iOS platforms, providing a seamless experience across devices. With Twilio's Chat SDK, developers can easily manage communications on chat channels, leveraging features like message rendering and media publishing. The SDK's sendMessage method simplifies the process of sending messages over Twilio Chat Channels, ensuring efficient communication. Twilio's Chat API supports push notifications, enabling timely alerts and updates for users. By integrating with services like GCM or FCM, businesses can ensure that users receive notifications even when the app is not active. The Chat SDKs are designed for easy integration, with comprehensive guides available for both Android and iOS platforms.
    Starting Price: $0.0085 per min
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  • 4
    MirrorFly

    MirrorFly

    CONTUS TECH

    MirrorFly is a CPaaS platform that empowers businesses and enterprises to add real-time chat features into their existing applications and websites. MirrorFly CPaaS offers text, voice, video, and broadcasting in an enterprise-grade infrastructure. Startups and large enterprises can build their own chat app with extensive customization and branding capabilities to add logos, brand color, and other brand elements. The self-hosted Chat APIs and SDKs offer 1000+ in-app messaging features with 100% customization. In addition, MirrorFly offers a dedicated developer team to support the end-to-end custom chat app development process. MirrorFly Readymade SDKs: 1. In-app Chat API 2. HD Video Call Solution 3. HQ Voice Call SDK 4. Self-hosted Chat Messaging Solution 5. SIP & VoIP Call Solution 6. Flutter Flow Software 7. Activity Feeds Solution 8. Call Broadcasting 9. Video Conferencing API 10. Video KYC Solution 11. Live Streaming SDK
    Starting Price: $299 per month
  • 5
    Digital Samba

    Digital Samba

    Digital Samba

    Digital Samba's video conferencing solutions enable organisations across industries to hold GDPR-compliant online meetings, webinars, trainings, and large events in HD video & audio right from their browsers or mobile app. Digital Samba's prebuilt video conferencing solution allows developers to embed and launch a full-featured video meeting with minimal effort. Built from the ground up with UX in mind, Digital Samba Embedded allows you to manage all aspects of the conference with our video calling API and fine-tune the experience with our client SDK. The Digital Samba Video SDK, written in Typescript and provided as an NPM package, will have you up and running with a few lines of Javascript code. Made for developers, by developers.
    Starting Price: €0.004
  • 6
    Weavy

    Weavy

    Weavy

    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. All Weavy features include integrations to the third party tools your users are already familiar with: add capabilities for Zoom and Teams video conferencing, Google Drive, Dropbox, or Box file sharing, document sync and versioning contextually inside your app. Weavy allows app developers to quickly add the features that users need to be productive and interactive, directly within the app environment. With our SDK and APIs, you can deploy chat, feeds, and document sync in a matter of days, not months, and at a fraction the cost to build in-house. Focus on your core product while simultaneously adding functionality that makes your user experience not only better, but increases user engagement and dependency on your app.
    Starting Price: $0/Month
  • 7
    Plivo

    Plivo

    Plivo

    Access high-quality cloud communications at a low cost with Plivo Communications Platform, a Cloud API Platform and a Global Carrier Services Provider. Plivo Communications Platform enables users to make phone calls to all countries, buy local phone numbers in 55 countries, send SMS to all countries, and more. Available 24/7, Plivo Communications Platform also features free tech support by experts that are happy to assist customers with their issues.
    Starting Price: $.005 / SMS
  • 8
    Innoinstant

    Innoinstant

    Innocrux

    Innoinstant offers a customized communication solution for every industry across devices and platforms. Set up a white-labeled communication application scalability, security, and reliability. With customizable APIs and SDKs, ensure real-time communication for every industry and use case. Lag-free virtual classrooms, secure financial transactions, interactive video and text chats on live streams, Gaming, E-Commerce, dating, anything, and everything is possible with 100% customizations. With Industry-standard security, encryption, and signal protocol Secure and protect user communication with end-to-end encryption. Our powerful APIs and SDKs help set up effective communication through chat, voice, and video. Enjoy the benefits of communication with robust payment gateway, file sharing, screen recording, and unlimited calls and translate words to business. The application development is entirely tailor-made to suit every industry needs that works on any platform or device.
  • 9
    PubNub

    PubNub

    PubNub

    Innovate with Realtime Features: We take care of realtime communication infrastructure so you can focus on your app. Our 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 and community supported) and more than 65 pre-built integrations with external and third-party APIs to give developers the features they need regardless of programming language or tech stack. Scalability: The industry’s most scalable platform capable of supporting millions of concurrent users and allows for rapid growth with low latency, high uptime, and without financial penalties. Security & Compliance: Enterprise-grade security and compliance with the most stringent regulations worldwide, including GDPR, SOC 2, HIPAA, ISO 27001, and CCPA.
    Starting Price: $0
  • 10
    Ably

    Ably

    Ably

    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 like HubSpot, NASCAR and Webflow trust us to power their critical applications - reliably, securely and at serious scale. Ably’s products place composable realtime in the hands of developers. Simple APIs and SDKs for every tech stack, enable the creation of a host of live experiences - including chat, collaboration, notifications, broadcast and fan engagement. All powered by our scalable infrastructure.
    Starting Price: $49.99/month
  • 11
    Dyte

    Dyte

    Dyte

    Dyte's Video SDK and APIs are SOC 2, GDPR and HIPAA complaint. That lets you embed scalable, customisable and interactive video calls within minutes into your Web, Desktop or mobile apps. Collaborate efficiently with HD video, chat, screen sharing, whiteboard, emoji reactions, file sharing and everything a user packaged within one SDK. Dyte's Video Conferencing SDK & APIs are comfortable with React JS, Angular, JavascriptMobile: Flutter, Kotlin, Swift, React Native, Android, iOSDesktop, Electron. With an uptime of 99.99%, industry-leading documentation and out of the box plugins, customize the video experience for your ed-tech, tele-health, fitness, HR-tech, social or gaming platform. Use Dyte's SDKs to build fully custom video experiences powered by a robust infrastructure. With our out-of-the-box chat, plug-ins, recording, and several useful features, Dyte is an all-in-one SDK to help you take video collaboration to the next level. Dyte offers 10K free credits each month
    Starting Price: $0
  • 12
    Channelize.io

    Channelize.io

    Channelize.io

    Channelize.io is an end-to-end Live Video Commerce enabler that enables E-Commerce Brands globally to add Live Shopping Experiences within their Websites and Mobile Apps. Our Platform can be easily integrated within existing websites and apps with Pre-built integrations for Shopify, WooCommerce, Magento, PrestaShop, Wix and more, and via our API, SDKs, and UI Kits. Channelize.io Live Shopping Platform gives brands the opportunity to leverage the power of Live Selling and Real-time Buyer Engagement to Boost Sales and Enhance their Brand Perception by connecting better with their Buyers and Showcasing their products in manners that lead to Informed, Trusted, and Accelerated Purchases by buyers. Our Platform has shown great results for our customer Brands by increasing Sales by 36%, Boosting Engagement by 5X, and reducing Cart Abandonment by 50%. Please Book a Demo with us to see our Platform in action.
    Starting Price: $49.00/month
  • 13
    Stream

    Stream

    GetStream.io

    Why spend months building in-app activity feeds and messaging from scratch when you can implement in just weeks with Stream's activity feeds and in-app chat APIs? Stream's reliable APIs, developer-friendly SDKs, and flexible UI kits enable product teams to quickly integrate polished communication functionality often found in social media platforms such as WhatsApp, Facebook Messenger, and Instagram. With an industry-leading 99.999% uptime SLA, over a billion end users, and 5 million concurrent connections recently supported in a single chat channel, Stream's APIs are highly scalable, making them ideal for enterprise-grade businesses and growing startup platforms alike. Ship fully-featured activity feeds and in-app chat functionality faster with easy-to-use software components that give your product a competitive edge.
  • 14
    ZEGOCLOUD

    ZEGOCLOUD

    ZEGOCLOUD

    Embed engaging real-time voice, video, and in-app chat experiences into your apps with ZEGOCLOUD's communications APIs. Get started with 4 lines of code and enable enriched interactions with more features. Use our voice, video, and in-app chat SDKs to develop the exact communication features your users need to connect, share, and interact with each other anytime, anywhere. Liven up the interactions and elevate the vibes for your users with a rich set of add-ons, including emotionally responsive avatars, AI-powered video effects, whiteboards, and more. Monitor the quality of communications in real-time and gain insights into your user experience with our powerful monitoring and analytics tools, so you can respond to any issues swiftly and improve your services continuously. ZEGOCLOUD's social solutions help you build 1-on-1 and group video calls, live audio rooms, and social live streaming into your apps to help your users connect and have fun together.
    Starting Price: $0.59 per 1000 minutes
  • 15
    Infobip

    Infobip

    Infobip

    Infobip is a global leader in omnichannel engagement powering a broad range of messaging channels, tools and solutions for advanced customer engagement, authentication and security. With over 700 direct carrier connections and 60+ offices on 6 continents, Infobip is the #1 choice of some of the world's biggest companies to scale their customer communications. We help our clients and partners overcome the complexity of consumer communications, grow their business and enhance customer experience, all in a fast, secure and reliable way. With Infobip, you can achieve deeper customer engagement across the widest selection of local and global channels, including: SMS MMS RCS Live Chat WhatsApp Business Apple Messages for Business Facebook Messenger Instagram Business Telegram Viber Voice / VOIP Video Email
  • 16
    teli Messaging
    Send any text campaign, alert, or notification effortlessly with teli’sMessaging API platform by Commio. From short to long code to toll-free SMS/MMS, we handle everything from campaign registration to message transmission and everything in between. Send millions of messages through major gateways to get your content delivered, faster. Plus, you can rely on our messaging delivery notifications and diagnostic tools to help you keep critical communications flowing. Our messaging experts are here to turn your vision into reality. Forget cookie-cutter messaging APIs, your use case is unique. We’ll size up your solution then work with you one-on-one to bring it to life. Because one-size-fits-all works for T-shirts, not business-critical messaging.Our SMS/MMS APIs give you the power to embed programmable messaging into any platform or application. With enterprise scale built-in, we can help you send more SMS messages, faster.
  • 17
    Iotum

    Iotum

    iotum

    Augment your offering by adding cloud-based voice and video solutions to your existing platform.​ Explore how iotum's out-of-the-box APIs and SDKs enable interactive engagements within your existing app, website, or platform. Strengthen your customer relationships by using the communication method they prefer. Engage with your audience in real-time, on any platform, from anywhere, through the addition of video and voice with iotum’s API and SDK solutions. Iotum utilizes the VP9-SVC codec, the latest in video technology that uses less bandwidth for the same top-notch video quality, and is able to maintain better video quality under poor internet conditions. Iotum has media servers distributed worldwide that use global low latency, ensuring all participants have crystal clear connections, no matter where they are. Iotum offers collaboration features such as annotation, whiteboards, laser pointer, and instant chat a-la-carte so that your developers don’t need to build in-house.
  • 18
    Amity Bots

    Amity Bots

    Amity Solutions

    Amity Bots is a scalable enterprise AI chatbot solution that enables businesses to provide customers with a first-class experience 24/7. By integrating with platforms like LINE, Facebook, and web or mobile applications, Amity Bots facilitates seamless customer engagement across multiple channels. The platform automates marketing activities, personalizes customer interactions, and enhances sales effectiveness by generating and qualifying leads automatically. It also improves customer experience by offering round-the-clock support, reducing repetitive responses, and saving time and costs. Key features include multi-channel chat management, user profile and context tracking, co-pilot live chat, AI-powered decision-making, flexible integration options, and comprehensive analytics and reporting tools. Amity Bots supports message templates, product catalogs, multi-language capabilities, and bulk import/export functions.
  • 19
    Social+

    Social+

    Social+

    Boost in-app engagement, retention and revenues. Easily add pre-built social and community features to your app. Collect first-party data and unlock AI-powered insights to drive app growth. Add social features to your app in days. With our ready-to-use SDKs, APIs, and UIKits, you can embed the most popular social features in your app or website in no time. Harness the power of your first-party data with AI to enhance your business strategy and unlock new growth opportunities. Maximize your app’s revenue potential while enhancing user experience with our native monetization capabilities.
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