List of the Top 14 Chat SDK & API Software for Flutter in 2025

The Twilio Chat SDK & API offers businesses the ability to seamlessly integrate real-time chat capabilities into their applications, enhancing communication experiences for users. This powerful solution facilitates the development of interactive chat environments, supporting individual conversations, group discussions, and even extensive community interactions. Developers can effortlessly incorporate features like message history, typing notifications, and read receipts with Twilio's Chat SDK & API, promoting greater user engagement and satisfaction. Its adaptable API allows for customization, aligning with the brand's aesthetics to provide a uniform experience across different platforms. Furthermore, Twilio's robust infrastructure guarantees dependable message delivery and scalability, making it suitable for growing user communities without sacrificing performance.

Sendbird’s Chat API empowers developers to construct robust messaging solutions that include capabilities such as one-on-one and group conversations, multimedia sharing, and instantaneous updates for both mobile and web environments. This API offers sophisticated features like translation of messages, search functionalities, user management, and spam prevention, enabling companies to create safe and interactive messaging platforms. With Sendbird’s development resources, such as software development kits (SDKs) and user interface kits, developers can easily incorporate these functionalities into their applications, alleviating the burden of operational challenges. The system is built for scalability, catering to the requirements of businesses ranging from emerging startups to large multinational corporations.

Twilio's Chat SDK and API provide businesses with the tools to incorporate real-time messaging functionalities into their applications, thereby improving customer interaction and support. These SDKs are designed for both Android and iOS devices, ensuring a smooth user experience across different platforms. With Twilio's Chat SDK, developers can effortlessly oversee communications within chat channels, taking advantage of features such as message formatting and media sharing. The sendMessage function streamlines the process of transmitting messages through Twilio Chat Channels, facilitating effective communication. Additionally, Twilio's Chat API includes support for push notifications, allowing for prompt alerts and updates to users. By connecting with services like GCM or FCM, businesses can guarantee that users receive notifications even when the application is not in the foreground. The Chat SDKs are user-friendly and come with detailed documentation for both Android and iOS integration.

MirrorFly serves as a tailored CPaaS solution, enabling businesses and enterprises to engage in real-time communications like instant messaging, voice calling, and video conferencing through its advanced Chat APIs and SDKs. No matter the specific requirements, technology stack, or devices used, MirrorFly empowers global brands to create their own chat platforms with extensive customization options and no restrictions. Among the numerous advantages offered by MirrorFly’s CPaaS are: ✅ Self-hosting capabilities for added control ✅ Limitless customization options to suit unique needs ✅ Complete ownership of data ensuring privacy ✅ An extensive array of over 1000 features ✅ Tailored security measures including Gmail, Phone, and Biometric options ✅ The ability to upload large files exceeding 3 GB ✅ Support for multi-tenant servers ✅ Scalability to accommodate over 1 billion concurrent users ✅ Complimentary migration and integration services ✅ The option to hire a dedicated team specifically for your project With these features, businesses can enhance their communication strategies effectively and efficiently.

EnableX simplifies the process of incorporating real-time communication capabilities into various applications and workflows. Specifically tailored for Service Providers and Systems Integrators, it offers a powerful, scalable, and secure communications platform that alleviates the burdens of network infrastructure management and complexity. With EnableX's wide array of programmable SDKs and APIs, developers can effortlessly customize and integrate communication features such as voice, video, and SMS into their existing systems and workflows. Furthermore, businesses can engage with customers globally through Virtual Number services, while also taking advantage of advanced functionalities including AI and natural language processing. This flexibility allows for enhanced interaction and connectivity in a rapidly evolving digital landscape.

Innoinstant offers a tailored communication solution that seamlessly integrates across various platforms and devices. By developing a white-labeled communication application, it ensures reliability, security, and scalability for users. With the ability to create bespoke APIs and SDKs, real-time communication can be achieved across any industry or application. Complete customization facilitates smooth virtual classrooms and safe financial transactions, while interactive video and text chats can enhance live streaming experiences. This versatility spans numerous sectors, including gaming, e-commerce, and dating. Industry-standard security measures, encryption, and signal protocols safeguard user interactions through end-to-end encryption. Our robust SDKs and APIs serve as essential tools for effective communication, whether through chat, voice, or video. Users can engage effortlessly with features like file sharing, screen recording, and comprehensive payment gateways. Additionally, the platform enables unlimited calling and the ability to translate communications into business opportunities. Furthermore, the application development process is meticulously tailored to accommodate the unique needs of every industry and is compatible with any device or platform.

A Unified Platform for Instant Communication: An innovative solution designed for creating and managing real-time interactions across web, mobile, AI/ML, IoT, and edge computing applications. Streamlined and Accelerated Deployments: With SDK compatibility for over 50 environments including mobile, web, server, and IoT (supported by both PubNub and the community), alongside more than 65 ready-made integrations with various external and third-party APIs, the platform ensures you have access to essential features, irrespective of your programming language or technology stack. Unmatched Scalability: Recognized as the most scalable platform in the industry, it can effortlessly accommodate millions of simultaneous users, ensuring rapid expansion with minimal latency and high uptime, all without incurring financial penalties, making it a reliable choice for growing businesses. Furthermore, this platform is designed to evolve with your needs, supporting future advancements in technology seamlessly.

CometChat serves as a versatile live chat platform that enables seamless interaction and collaboration between users and customers. Built with an API and Chat SDK, it can be installed either on-premises or in the cloud. This solution empowers users to engage in video, text, and voice conversations with their clientele, as well as share images through broadcast videos, enjoy games, and utilize whiteboards for enhanced communication. Among its key features, CometChat boasts WebRTC capabilities, file and screen sharing, real-time translation for different languages, and extensive customization options for layouts, languages, and color schemes. It also offers functionalities such as typing indicators, notifications for last seen status, read receipts, and a wide array of emojis and stickers, while allowing users to easily transition from text to video chatting. In addition to these primary features, CometChat provides several supplementary services, including broadcast messaging, guest login functionality, access to past messages, the ability to block or unblock users, and options for video broadcasting and voice notes. The pricing structure for this platform is determined by the number of monthly active users, and customer support is readily available through both email and phone channels, ensuring users receive assistance when needed.

Ably stands out as the leading platform for realtime experiences. With more WebSocket connections than any competing pub/sub service, we facilitate connections for over a billion devices each month. Companies rely on us for their essential applications, including chat, notifications, and broadcasts, ensuring that these services run reliably, securely, and at an impressive scale. Our commitment to excellence makes us the preferred choice for businesses seeking to enhance their realtime capabilities.

Dyte's Video SDK and APIs adhere to SOC 2, GDPR, and HIPAA standards, ensuring a high level of security and compliance. You can effortlessly integrate scalable, customizable, and secure video calling capabilities into your web or mobile applications using only a few lines of code. The SDK supports various platforms, including Android, iOS, React Native, Angular, and numerous other languages. Boasting an impressive uptime of 99.99%, alongside comprehensive documentation, a user-friendly UI kit, and pre-built plugins, you can tailor the video experience to meet your specific needs in just minutes. This flexibility allows developers to enhance their applications quickly and efficiently, providing users with a seamless communication experience.

You can avoid spending months developing in-app messaging and activity feeds, as they can be implemented in just weeks through Stream's chat APIs or activity feeds. With Stream’s adaptable UI kits, dependable APIs, and developer-friendly SDKs, product teams can seamlessly add sophisticated communication features akin to those on popular social media platforms like Instagram and WhatsApp. Boasting an impressive 99.999% uptime guarantee, Stream's APIs support over a billion users and accommodate 5,000,000 concurrent connections, making them exceptionally scalable for both established enterprises and emerging startups. The intuitive software components streamline the process of deploying comprehensive activity feeds and in-app chat features, enabling faster delivery and enhancing your product's competitive advantage. As a result, you can focus on innovation and user experience while leveraging the power of advanced technology.

Transform your applications by incorporating engaging real-time voice, video, and in-app chat features with ZEGOCLOUD's robust communication APIs. By implementing just four simple lines of code, you can initiate the integration and gain access to a multitude of interactive functionalities. Take advantage of our extensive voice, video, and in-app chat SDKs to customize the communication features that your users crave, enabling them to connect, share, and interact anytime and anywhere. Enhance the user experience with a rich array of add-ons, including emotionally aware avatars, AI-driven video effects, and interactive whiteboards, among others. Ensure high-quality communication in real-time while also acquiring significant insights into user behavior through our sophisticated monitoring and analytics platforms, allowing you to promptly tackle any issues and continuously refine your services. ZEGOCLOUD's pioneering social solutions empower you to establish personalized one-on-one and group video calls, energetic audio rooms, and lively social live streaming, creating opportunities for users to connect and enjoy memorable experiences. By utilizing these tools, you can nurture a thriving community where individuals build lasting bonds and cherish shared moments together, thereby fostering a sense of belonging among users. This integration not only enhances user engagement but also positions your application as a leader in innovative communication solutions.

TalkJS is a comprehensive chat API designed for easy integration into any website or mobile application. It features a robust chat user interface compatible with various programming languages and frameworks, allowing you to deploy a chat solution in a matter of hours. With our JavaScript SDK, you can effortlessly implement two-way chat, leveraging our instant messaging infrastructure alongside an impressive user interface. TalkJS offers everything needed for a messaging application, ensuring reliability and scalability with real-time synchronization across platforms. You can rapidly develop a fully functional messaging system; in just ten minutes, your application can be operational. Whether you are using React, jQuery, Angular, VueJS, PHP, Ruby on Rails, Python, Django, ASP.NET MVC, .NET, Java, NodeJS, or other languages, your TalkJS code will reside in the frontend, ensuring seamless integration with any framework or programming environment. This versatility makes TalkJS an excellent choice for developers looking to enhance their applications with a chat feature.

The seamless integration of a chat API and messaging SDK for mobile and web platforms is crucial for improving user engagement. This adaptable messaging SDK supports the creation of instant messaging applications, enabling real-time communication while providing a native chat interface. By utilizing a comprehensive messaging API, developers can greatly enhance the collaborative aspects of their messaging platforms. The SDK is crafted for perfect compatibility with various third-party applications, thereby broadening the functionality of the chat API. Users are empowered to design personalized chat applications that deliver a rich experience, encompassing features like voice and video calls, native messaging capabilities, multimedia sharing, and many more. Moreover, this solution facilitates the building of network communities and engaging social chat interfaces while ensuring consistent real-time messaging. Apphitect's instant messaging framework not only accommodates individual conversations but also promotes lively group chats that invigorate everyday exchanges. Furthermore, users can conveniently organize hangouts within their mobile chat applications, enhancing social interactions. In summary, this messaging SDK equips developers with the tools to create engaging and multifaceted communication solutions that truly resonate with their audience, ultimately transforming the way people connect and communicate.