6 Best Chat SDK and Messaging APIs in 2024

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One of the key roadblocks to success when it comes to digital businesses recently relies on a lack of improved customer support, engagement, and retention. Integrating Chat SDK into organizations’ system is one way businesses can improve and increase customer engagement and retention, however,   choosing the best SDK Chat simplifies and improve customer retention even more. That said, in this article, we will highlight some basic guides to choosing the best chat SDK for your app. But before that, let’s get to know what the Chat SDK is all about and how it works. 

What is Chat SDK and How Does it Work?

Chat SDK (software development kit) is a set of tools designed to help developers integrate real-time chat into their websites and applications. This shortens the time needed to create a website and application. By using the pre-existing SDK Chat to integrate chat functionality into their websites instead of starting from scratch to create a working interactive system, developers can save time and resources. Having said that, using SDK Chat allows developers to do away with the needless time spent developing new chat systems. It also lowers costs and improves security and scalability. Additionally, SDK Chats are integrated into various types of websites, like messaging websites, social media platforms, and e-commerce platforms.

Top Chat SDKs available in the industry

The best SDK Chat is based on your specifications, the platform, and the type of app and website you are building with it. Now let’s explore some of the best SDK chats out there;


The first on my list today is Sendbird, it is one of the best SDK chats you can find out there, an SDK chat API for chat boxes. Businesses may enhance engagement, collaboration, and quality of service by utilizing Sendbird’s flexible capabilities, adaptable APIs, configurable SDKs, and more features.

Group chat, one-to-one messaging, push alerts, read receipts, and other features make Sendbird’s chat box API an excellent choice for both individual and business customers. 


  • Sendbird has user interface features that can be fully customized for a smooth integration with your program of choice.
  • It supports group calls for real-time communication and can have up to 25 members.
  • Chatbots with AI capabilities for automated customer service and interaction, enhance customer retention  
  • Support in multiple languages for diversity and a global reach.
  • Push notifications and in-app communications provide a satisfying user experience.


PubNub is another SDK Chat out there that is very nice and seamless to use. With PubNub, developers have access to a flexible toolbox built around a robust interactive system. This makes for dependable chat experiences as well as ones that work well across a variety of platforms, including web, mobile, 


  • Automated Business logic 
  • A profanity filter 
  • Robust support for multi-user operations

With an emphasis on mobile platforms, PubNub’s SDK chat API is designed to empower development teams and let them quickly and effectively realize their unique chat visions, improving user experiences all around.

Easy to use UI 


Twilio is a unified platform for business communications, it allows businesses to interact with clients through their preferred channels. It is a powerful SDK chat software that allows users to establish and handle chat features on their websites and mobile apps. By providing a flexible and adaptable platform, Twilio enables businesses to deliver smooth and tailored chat experiences that foster interaction and enhance customer satisfaction.

Twilio is an excellent option for businesses aiming to improve their customer communication approaches and achieve lasting achievements.


  • real-time chat functionality. 
  • Multi-channel support, 
  • Customizable chat experiences that can be tuned to suit your company’s brand and style
  • Flexible developer API integrations
  • Advanced security features


MirrorFly is an SDK chat that helps to keep businesses connected with an improved communication experience. By creating SDK chat, audio, and video SDKs that can be linked with your software programs within a few minutes, it improves connectivity between programs.

It provides seamless interaction and integration of application programming interfaces (APIs), pre-built UI kits, video guides, simple instruction manuals, and 24/7 technical assistance, as well as secure communication.


  • Voice, video, and in-app chat APIs
  • Lite-chat app
  • Low-code strategy  
  • Reliability and Scalability


Apphitect is another top Chat SDK with enhanced features and functionalities. With features like push notifications, social interactions, and personal chats, It offers a 99.9% uptime option for the integration of communication channels into web, iOS, and Android applications with its configurable chat API. It supports features of virtual communication tools like screen sharing, video conferencing, and video. 


  • Notifications with Push and Offline Messaging
  • Social integration and presence indicators
  • Geo-location tracking 
  • Video Calls 
  • Normal Calls 

Guide to Choosing the Best Chat SDK for Your App

The ultimate guide to choosing the best Chat SDK for your app provides a simple and user-friendly UI. It also ensures that all messages are delivered securely. To select a chat solution, first outline why your product requires chat functionality. This will empower you to seek APIs and SDKs that excel in this area.

Step #1: Documentation

While chat may seem simple, reliable in-app messaging requires many technical components and engineering resources. As a result, building chat in-house can consume more development bandwidth than an entire product if you don’t carefully prioritize it relative to your core value proposition.

When choosing a chat API or SDK, you want one with detailed documentation that’s easy to understand. This ensures that SWEs can quickly pick up on using the feature without relying on support.

You also want to be sure that the chat solution adheres to industry-standard security practices and will protect user data. Otherwise, you risk becoming another data breach headline or facing fines for mishandling customer information. Choose a vendor like Agora.io with robust security features like end-to-end encryption, source code control, and security patches to ensure your apps are safe. A secure in-app messaging platform will keep users’ conversations private and prevent the leaking of personal information.

Step #2: Reliability

A reliable chat solution should offer robust real-time messaging functionality and the ability to expand as your needs change. It should also support a range of programming languages and platforms, 3rd party integrations, and multi-protocol capabilities.

The right solution offers a variety of Chat APIs and SDKs that provide developers with the tools to add in-app messaging to their apps, including direct and group messages, threads, reactions, typing indicators, and more. Its UI/UX Kits enable customizability and ease of integration. Some also provide developers with tools to help productive app communication. Its chat APIs and SDKs are easily integrated into existing web-based or mobile-native systems. They’re scalable and reliable, allowing you to drive 1B+ conversations across multiple apps at minimal latencies. Looking for A Guide to Boost your Dating Website Ranking with Better Skadate SEO?

Furthermore, a trustworthy chat solution should put security first to guarantee the privacy and accuracy of communications. It should provide end-to-end encryption and adhere to industry standards. Furthermore, it should have a responsive customer support system to promptly address issues or concerns, contributing to a trustworthy and efficient communication platform.

Step #3: Scalability

Users use chat apps daily, so product teams must ensure the system can handle many messages and users. This is where a Chat SDK can help.

While an API-based chat solution may require heavier integration work by developers, it can also save time and resources in the long run. In addition, it can offer a customizable user experience and robust security features such as end-to-end encryption and compliance with industry standards.

Additionally, real-time Chat SDK tools offer multiple monetization options like in-chat payments and sponsorships, which can turn your chat into a revenue-generating resource for your company. Furthermore, these systems are designed to scale and allow for unlimited concurrent users, which can prove helpful in the case of business expansion. In contrast, subscription-based chat solutions limit simultaneous users on a per-plan basis. 

Moreover, a scalable Chat SDK should provide efficient load balancing and server-side optimizations, ensuring optimal performance even during peak usage. This capability is essential for accommodating sudden spikes in user activity and maintaining a seamless user experience. Additionally, a well-designed Chat SDK should facilitate easy integration with third-party analytics tools, empowering businesses to gather insights into user behavior and further enhance their scalability strategies.

Step #4: Security

The best chat SDK should provide robust security features to keep users’ conversations and data private. This can include end-to-end encryption, securing the server-side components with Transport Layer Security (TLS), or other data protection mechanisms.

In addition, the SDK should be able to handle large volumes of traffic without breaking down. This can be done by implementing multiple connections to the chat servers, using load balancers, or using other scalable solutions.

Moreover, the SDK should be capable of saving chat messages to prevent losing important information. This is important because it allows developers to comply with industry-standard data protection regulations and protect against security breaches. This can be achieved by integrating chat providers offering unlimited user data storage. The right tools allow indefinite chat message retention.

Step #5: Pricing

Pricing is a major factor in choosing an SDK or API solution. For some apps, the savings in up-front cost and development bandwidth will make it a no-brainer to use a chat SDK. But in-house development may be worth the investment for others, particularly those with a unique vision for how a chat should look and function and the budget to back it up.

Stream offers a developer-friendly SDK and UI kit to help brands build productive communication features into their mobile and web apps. It supports direct, group, and channel messaging with threads, read receipts, and reactions. Plus, it provides advanced features like online presence, profanity control, and user moderation.

Its security features protect sensitive data and conversations from eavesdropping. It also complies with GDPR and other privacy standards to keep users’ data secure. It is ideal for e-commerce, marketplace, healthcare, and finance industries. This chat API is a reliable, scalable, and customizable option for businesses of all sizes. It integrates easily and is available on a variety of platforms.

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