5 Best Chat APIs & Messaging SDKs of 2022

Real-time chat is a powerful channel for your business to reach customers. In a customer service context, it allows you to handle inquiries immediately. For outbound sales, you can interact with potential customers as soon as they land on your website. As your business connects directly with customers through real-time chat, those connections can translate to sales, growth, and value.

Fortunately, it has never been easier to integrate such a solution into your business. Instead of building a messaging solution from scratch, companies can leverage prebuilt solutions to easily integrate chat into existing apps and websites.

Below, we’ll look at 5 of the best chat application programming interfaces (APIs) and messaging software development kits (SDKs) of 2022—but first, let’s lay a foundation by reviewing core concepts.

What are chat and messaging APIs and SDKs?

Chat platform APIs and SDKs allow a company to integrate existing real-time chat solutions into its own websites and applications. You can think of both APIs and SDKs as prebuilt solutions. Both abstract away all the complexities of messaging software, enabling businesses to provide first-class chat capabilities without reinventing the wheel. This off-loads the burden of implementation to the provider.

The difference between APIs and SDKs

In the context of real-time messaging, what’s the difference between APIs and SDKs?

An API allows the user—e.g., a business paying for the API service—to make HTTP requests to interact with the underlying messaging platform. The business interacts with the chat platform through those HTTP requests, sending and retrieving data. This platform then facilitates all the chat capabilities.

On the other hand, SDKs are libraries written in specific programming languages (e.g., Ruby, Java, or JavaScript) for quick integration into an application. Rather than only providing an HTTP interface to the messaging platform—as the API does—an SDK provides a language-specific interface to the messaging platform. This often results in a more feature-rich integration than a messaging API could provide.

Some of the most comprehensive message SDKs tend to be full-stack chat solutions that even include user interface/user experience (UI/UX) components out of the box. APIs typically only provide an HTTP interface. However, because APIs are so simple and general, businesses can customize solutions at a granular level without being locked into a fully formed chat solution from an SDK.

Features and pricing

To adopt a prebuilt solution, you must consider what features you need. Most messaging solutions tend to have a common set of core features, such as:

• Group chats
• Voice and video calling
• Screen sharing
• Real-time notifications
• Chat moderation
• Multimedia or file sharing
• Mobile device support (in addition to web)

Some solutions are cloud-based, while others deploy on-premise. And while an advantage of cloud-based services is the use of an existing platform without worrying about storage or bandwidth, this can make cloud-based platforms more expensive since you’re paying for that peace of mind.

The pricing for these platforms varies, but typically, it factors in:

• Number of users on a plan
• Number of messages used
• Number of users and messages combined

Finally, many solutions also have free plans, allowing businesses to experiment with the chat messaging SDKs and APIs before paying for them. Typically, these free plans have some constraints, such as the available features, the number of users supported, or limited-time use.

Now that we’ve covered the basics, let’s look at the top 5 industry leaders in this space.

Top chat API and messaging SDK platforms

1. Twilio

Twilio is the industry leader for webchat APIs and messaging SDKs, with a robust feature set and a customizable suite of options.

Its entire product suite consists of APIs and SDKs that cover all the ways people communicate digitally: programmatic SMS and MMS, voice and video, conversational chat APIs, and even programmable fax. Developers can use Twilio to integrate their application software with almost any channel of communication imaginable.

In addition to APIs, Twilio has messaging SDKs for the following languages and platforms:

• Go
• Java
• Python
• PHP
• C#
• Node.js
• Ruby
• JavaScript
• iOS
• Android
• And several other SaaS integrations (such as Salesforce and Authy)

Twilio is a complete real-time messaging software platform. However, because most of the solutions are general-purpose APIs and SDKs, fully accessing Twilio’s solutions and features often requires an in-house software development team.

2. Sendbird

Sendbird primarily focuses on building a robust chat API, resulting in a comprehensive feature set that includes:

• Multichannel chat
• Multimedia integration
• Moderation
• Translation
• Offline communication

It also provides a UIKit for its chat SDK, allowing users to leverage prebuilt user interface components when building chat messaging solutions.

3. PubNub

PubNub focuses on mobile platforms, providing an in-app chat experience to engage customers in real time. Its standout features include:

• Strong concurrency support for high-throughput messaging networks (such as coordinating emergency services responses)
• Automated business logic that’s simple to configure
• Built-in, on-demand profanity filtering

Compared to other real-time messaging software, PubNub’s competitive advantage is its ease of use and configuration, even for nondevelopers. PubNub’s solution also scales well with large organizations.

4. Mirrorfly

MirrorFly markets itself as a complete messaging platform that provides real-time chat, video, and audio messaging capabilities. The features that differentiate MirrorFly from competitors include:

• Full chat experience customization out of the box
• Capabilities to run communication software in the cloud or on-premise
• A one-time payment rather than a monthly subscription per user—ideal for businesses expecting to support many users.

5. TalkJS

TalkJS is a messaging SDK focused on building chat apps as easily as possible. Though it may be less powerful or feature-rich than some of the other solutions discussed, its JavaScript SDK lets nontechnical builders get up and running quickly. With only a few lines of code, any user can easily set up a chat experience on their website.

Similar to PubNub, TalkJS is an attractive solution for businesses that want the power of real-time messaging software without investing too much in an expert developer team to build out solutions. The main difference between TalkJS and PubNub is that PubNub primarily targets mobile, while TalkJS is for JavaScript websites or apps.

Learn more about Twilio’s chat and messaging capabilities

The competitive landscape of real-time messaging software is broad and deep. Fortunately for businesses, all this competition means more choices for building programmatic chat and messaging solutions—that’s where Twilio comes in.

Looking for a solution that will scale across channels? Twilio’s Conversations API supports SMS, MMS, chat, and messaging, all within a single API. With multimedia support, you and your customers can share photos, videos, and other file types to make communication easier. Plus, you can scale conversations from one-on-one interactions to up to 1,000 participants. And if you’re a healthcare provider or business, you can rest assured that your SMS and chat conversations are eligible for HIPAA compliance.

Learn more about the Conversations API, or if you’re ready to start building, check out the Conversations documentation.