Best Chat SDK & API Software for Windows of 2025

Twilio's Messaging API is an essential tool for businesses looking to integrate messaging capabilities into their applications with ease. It provides a reliable RESTful API that facilitates the sending and receiving of SMS, MMS, and WhatsApp messages on a global scale. This API allows businesses to automate and scale their communications, ensuring that messages reach customers through their preferred channels. With support for various sender types, such as long codes, short codes, toll-free numbers, and alphanumeric sender IDs, Twilio offers flexibility in message delivery. The Messaging Services feature further enhances this by enabling the grouping of global senders and intelligent sending, which automates sender selection and manages compliance regulations. Additionally, the API supports inbound webhooks, allowing businesses to handle responses programmatically and engage in two-way conversations with customers. Twilio's comprehensive documentation, sandbox testing, and robust support empower businesses to create efficient, scalable, and compliant messaging solutions that enhance customer engagement and drive conversions.

Use the language you already love to prototype ideas quickly, develop production-ready communications applications, and run serverless applications on one API-powered platform. Twilio is a single fully-programmable platform with flexible APIs for any channel, built-in intelligence, and global infrastructure to support you at scale. Quickly integrate powerful APIs to start building solutions for SMS and WhatsApp messaging, voice, video, and email. Browse documentation and SDKs in multiple coding languages, including Ruby, Python, PHP, Node.js, java, and C#, or jumpstart your first project with our open source code templates to quickly build production-ready communications apps. Consult our community of over 9 million developers for guidance and inspiration on your next project. Sign up and start building today.

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.

MirrorFly is a custom CPaaS provider powering businesses and enterprises with real-time communication, such as instant messaging, voice calls, and video conferencing through Chat APIs and SDKs. Regardless of the use case, tech stack, and devices, MirrorFly supports brands across the world to build their own chat platform with complete customization and zero limitations. MirrorFly’s Key CPaaS Benefits: ✅ Host on Your Own Server ✅Unlimited Customization ✅ Complete Data in Your Hand ✅ 1000+ Features ✅ Custom Security (Gmail, Phone, BioMetric, etc) ✅ Upload Enlarged Files (3+ GB) ✅ Mulit-tenant Server ✅ Scale 1+ Billion Concurrent Users ✅ Free Migration & Integration ✅ Hire Your Own Dedicated Team

EnableX makes it easy to integrate real-time communications into applications or workflows. It was designed and developed for Service Providers and Systems Integrators. It provides a robust, scalable, secure communications platform without the complexity and maintenance of maintaining the network infrastructure. Developers can quickly customise and embed all of the communication functions, such as voice, video, and SMS, into existing applications, workflows, and systems by simply using EnableX's extensive sets of programmable SDKs and APIs. Businesses can communicate with customers worldwide using the Virtual Number services, as well as advanced features like AI and NLP.

Innoinstant provides a customized communication solution that can be used across all platforms and devices. Establish a white-labeled communication app for reliability, security, and scaling. You can create custom APIs and SDKs to ensure real-time communication in any industry or use case. 100% customizations allow for lag-free virtual classrooms and secure financial transactions. Interactive video and text chats are also possible on live streams. Gaming, E-Commerce and dating are all possible. Industry-standard security, encryption and signal protocol. Secure and protect user communications with end-to-end encryption. Our SDKs and APIs are powerful tools that enable effective communication via chat, voice, or video. Communication is easy with file sharing, screen recording and robust payment gateway. You can also make unlimited calls and translate words into business. The application development process is completely customized to meet the needs of every industry and works on any device or platform.

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.

A Live Video Commerce enabler, Channelize.io enables E-Commerce Brands to offer live shopping experiences on 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 Livestream 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. This ultimately leads to Informed, Trusted, and Accelerated Purchases by buyers. Our Platform includes three components: Buyer Interfaces: For Buyers to Engage & Shop from in Real-time Production Dashboard: For Brand Admins to Create & Manage Shopping Shows Host Apps + RTMP Support: Enables Hosts / Influencers / KOLs / Brand Employees / Anyone you choose as Host for each show to go live and run that Live Shopping Show effectively. Please Book a Demo with us to see our Platform in action.

Streamlined SaaS App Integrations Made Effortless. Kloudless is an advanced API integration platform that consolidates endpoints and data structures from various SaaS APIs, allowing you to write code just once and seamlessly connect your application with multiple SaaS providers. We have navigated the complexities of over 150 APIs on your behalf. Our expertise in communicating with and managing these numerous APIs means you can focus on your core product. Collaborate with us to ensure your application can connect with any SaaS solution your customers desire. Our Unified APIs simplify the integration process by harmonizing endpoints and data models from various SaaS APIs, enabling you to code once and integrate many. By abstracting the differences among numerous SaaS APIs, our Unified APIs facilitate rapid integration development, helping you bring new features to market faster. Additionally, we provide valuable features such as real-time activity monitoring and pre-built tools like the File Picker and Crawler, which are not always available from the SaaS providers themselves, further enhancing your integration capabilities. With Kloudless, you can maximize efficiency and deliver exceptional value to your users.