A self-hosted or source code chat solution helps enterprises and regulated industries to deploy their own messaging apps on Android, iOS, and web platforms. It offers full source code access to customize the chat app features and designs.
Unlike cloud-hosted chat apps like Slack or MS Teams, self-hosted solutions provide full control over data, custom security, and messaging infrastructure.
In this article, we will guide you through:
- The right self-hosted chat app solution
- 10 Top Self-hosted or source code chat apps
- Comparison table, overview, and key features
- How to choose the best providers in 2026
After testing the best chat apps for messaging, voice calls, group chats, and file sharing, I selected the top 10 platforms for 2026. Compare their features, pricing, ideal users, and limitations.
Which Self-Hosted Chat App Solution Is Right for You?
This section helps businesses across different industries understand and pick the relevant chat or messaging solution
| Ideal Audience | Choose | What businesses will get |
|---|---|---|
| B2B, SaaS businesses, enterprises | Self-hosted messaging solution | Data ownership and full infrastructure control |
| Large organizations and SMBs that want deep customization | Source code chat app provider | Full source code access, custom features, and seamless integration |
| Companies building branded messaging app | White label chat solution | Flexibility to add own brand logo, UI, and theme |
| Businesses with engineering and DevOps teams | Open-source tools | Community-driven platform that offers full code transparency and customization |
10 Best Source Code Chat APIs & Messaging SDKs in 2026
The top 10 self-hosted or full source code chat app providers include Apphitect, MirrorFly, Mattermost, Zulip, Element, Matrix Synapse, MongooseIM, Wire, Nextcloud, and MyChat. We have compared each one of them in the table along with pricing and launch time.
| Source Code Chat | Best For | Launch Time | Starting Price |
|---|---|---|---|
| Apphitect | Regulated businesses that need on-premise chat server | 24 to 48 hrs | Custom one-time license cost |
| MirrorFly | Enterprise B2B, SaaS, tech business looking for white-label chat app | Within 24 hours | Custom quote |
| Mattermost | DevOps and internal team communication | Within 2 days | Starts at $10 per user/month |
| Zulip | Organizations that need a team collaboration app | Within 2 days | Starts at $6.67 /user/month |
| Element | Businesses that build a messaging app on Matrix | Within 2 days | Starts at $10 per user/month |
| Matrix Synapse | Developers and enterprise businesses | Up to 2 days | Custom pricing |
| MongooseIM | Telecom providers that need large-scale XMPP messaging | Up to 3 days | Custom pricing |
| Wire | Government, healthcare, and finance businesses | Up to 3 days | Starts at approx. $8.58 /user/month |
| Nextcloud Talk | Privacy-focused teams and organizations with strict data rules | Within 1 day | Starts at €71.29/user/year (for 100 users) |
| MyChat | Small and medium businesses | Within 1 day | Starts at $8 per user/month |
First, let’s start with Apphitect.
1. Apphitect – On-prem Instant Messaging Provider
Apphitect helps enterprises build their own team chat app for Android, iOS, and the web. It provides full freedom to host the solution on their own servers or any preferred cloud environment. It supports private messaging, group video conferencing, screen sharing, third-party integration, and more.
2. MirrorFly – Self-hosted Chat & Messaging Platform
MirrorFly is an in-app chat, voice, and video communication software that helps developers to build interactive team chat apps. It allows customizing their SDK, add brand elements, and deploy it on their own servers. Besides, businesses can add AI-powered features to their instant messaging apps.
3. Mattermost – Secure Enterprise Collaboration Services
Mattermost allows organizations to deploy an internal messaging platform on private infrastructure. It includes direct messaging, channels, file sharing, workflow automation, and integrations with developer tools. Teams can manage user access, security policies, and compliance requirements.
Note: Explore more on alternatives to Mattermost.
4. Zulip – Threaded Team Chat Platform
Zulip delivers organized team communication through topic-based threaded conversations. The self-host platform supports real-time messaging across web, desktop, and mobile devices. Its conversation structure helps teams prevent channel clutter and manage discussions.
5. Element – Secure Matrix Messaging Client
Element provides a secure messaging interface built on the Matrix protocol for organizations prioritizing privacy. It supports encrypted messaging, voice and video calls, and file sharing features. Businesses can deploy it within their infrastructure and connect multiple users across trusted Matrix servers.
6. Matrix Synapse – Open Source Messaging Server
Matrix Synapse serves as the backend homeserver for building decentralized messaging platforms. Organizations can deploy it on private infrastructure to build secure and scalable communication systems. It manages user authentication, message synchronization, and chat room management.
7. MongooseIM – Scalable XMPP Messaging Server
MongooseIM allows enterprises to build scalable messaging platforms using the XMPP protocol. It supports millions of concurrent connections, message routing, and user presence. Development teams extend the platform through APIs while deploying it across distributed server environments.
8. Wire – Enterprise Secure Collaboration Platform
Wire provides secure team communication with encrypted messaging, voice calls, video meetings, and file sharing features. Organizations can deploy the platform within private environments to meet security and regulatory requirements.
9. Nextcloud Talk – Self-Hosted Team Communication Platform
Nextcloud Talk helps organizations deploy secure messaging, voice calls, and video meetings within their own infrastructure. It supports private conversations, group chats, screen sharing, file collaboration, and guest access. Businesses integrate it with the Nextcloud ecosystem to centralize communication and document management.
10. MyChat – On-Premise Office Messaging Application
MyChat provides an internal messaging solution for organizations that require communication within private office networks. It includes private chat, group messaging, file transfer, announcements, and user management. Businesses deploy it on local infrastructure without relying on external messaging services.
How to Choose the Right Source Code Chat & Messaging App?
You should prioritize scalability, customization, and data control while picking the self-hosted chat app. Below is a checklist to refer to:
- On-Premise & Cloud Deployment: Enterprises should host the chat solution anywhere they want. It helps balance performance, compliance, and cost.
- Customization Flexibility: The messaging solution should allow adding, removing, and modifying features and help build a user-specific chat app.
- Third-Party Tool Integration: It should connect with CRMs, helpdesk software and more business tools to improve overall user engagement and collaboration.
- Enterprise-grade Security: Check for features, such as role-based access, end-to-end encryption, and multi-factor authentication.
- Complete Data Ownership: It should provide full control over chat data, media files, backups, and the database. No vendor or third party should claim them.
- Scalable Infrastructure: Evaluate whether the platform supports horizontal scaling, load balancing, clustering, and high availability to handle future growth without disrupting messaging services.
- 24/7 Vendor Support: Check the technical team, documentation, integration assistance, and migration support availability.
- Lifetime License Ownership: The chat app provider must offer a one-time license for a cost based on business unique requirements.
The 7 Best Chat Apps In 2026: TL;DR
This quick list shows the top options and what they’re best suited for:
- WhatsApp: Best for simple everyday messaging & group chats
- Telegram: Best for large groups, channels, and cloud-based chats
- Viber: Best for social messaging with voice and video calls
- Line: Best for chat with integrated payment
- WeChat: Best for private messaging
- Facebook Messenger: Best for connecting with FB friends & quick chats
- Signal: Best for privacy-focused and encrypted messaging
Now, let’s look at each app in more detail, including its features, strengths, and ideal use cases.
Why Chat Apps Are Popular?
“The most important thing in communication is hearing what isn’t said.”
-Peter Drucker
In this world of minutes of messaging and seconds of sharing information, the need for chat apps has grown with several purposes. Finding the best messaging apps among people and businesses is sky-high, and so are free text messaging providers.
In this article, let’s find the top 10 chat apps with helpful list of instant messaging features for developers.
The broad term “chat apps” covers social media, team collaboration, and business meetings. We found the list; choose what suits you best!
What is a Chat App?
A chat app or messaging app is software that allows users to connect in real-time through the Internet. Messaging apps are available on various devices, including mobile, desktop, and web.
Chat applications offer a range of features, such as instant messaging, voice calls, video calls, group chats, file sharing, and other interactive elements like gifs, emojis, stickers, and more.
While looking into the chat app types, typically, it’s classified as four based on the use cases:
- Consumer-Focused Chatting Apps: This type of app is widely used for personal communication with personalized and user-friendly features.
- Business-Focused Chatting Apps: Built for internal enterprise communication with integration support to add other business tools.
- Social Chat Apps: In-app messaging integrated into social media platforms like Facebook and Instagram for real-time messaging.
- Specialized Chatting Apps: Secured and reliable chat apps built for healthcare, education, and gaming.
Choosing or building the best chat app is possible based on users’ needs and preferences.
Integrating MirrorFly in-app chat API with existing apps is the best and most efficient solution for the chat experience.
Let’s deep dive into the top chat service providers of 2026 which are worth trying.
Top 7 Best Chat Apps for Android, iOS and Web [2026]
The Top 10 Best Chat Apps for Android, iOS & Web are WhatsApp, Telegram, Viber, Line, WeChat, Facebook, Signal, Threema, Slack, and QQ. You may choose your provider based on their features and more.
1. WhatsApp: Best for simple everyday messaging & group chats
Ready to be installed back in 2009, WhatsApp paved the way for sending and receiving messages over a data connection. Later acquired by Facebook (also known as Meta) in 2014, WhatsApp built a feature-rich and growing user base.
As of 2026, WhatsApp has two billion users around the world for its huge real-time features.
WhatsApp’s Stand Out Features
WhatsApp, we can call it an instant messaging feature by another name. You can send messages, make voice calls and video calls, and do everything with a top-notch experience.
Apart from text messaging, this chat app has end-to-end encryption for all conversations and calls.
Wondering about encryption after hearing it from every other messaging app? Here, WhatsApp’s dedicated encryption feature removes all messages from its server once they are delivered.
Here are some of the best features of WhatsApp:
- Media storage and sharing
- Status updates
- WhatsApp web and desktop support
- Disappearing messages
- Communities
- Polls
- Reactions
Chat App for Social Collaboration
- Pros: Group chats, event planning, shared interests, and online communities
- Cons: Lack of topic-based chats, limited search functionality, privacy concerns.
WhatsApp for Business Collaboration
- Pros: Quick response over customer inquiries, payment integration, team collaboration and marketing.
- Cons: Lack of business specific features, scalability issues, limited analytics, not as professional as other encrypted chat apps.
2. Telegram: Best for large groups, channels, and cloud-based chats
Telegram is one of the best chat apps for transporting messages with security concerns. However, it has some limitations with encryption; we will look into that later. Launched as an iOS chat app in 2013, it was later developed for Android in the same year.
With 900 million active users as of 2026, Telegram has some features that will provide you with a complete private chat experience.
Start with one-on-one messaging. You can create 200,000 participants or channels. This includes sending text messages, group audio, and video calls.
For end-to-end encryption, Telegram will store your conversation on its server.
Here are some of the best features of Telegram:
- Large file sharing
- Accommodate large users up to 200,000 in a group
- In-built themes
- Secret chats
- Voice and video calls
- Supports multiple accounts simultaneously
Telegram for Social Collaboration
- Pros: Large group chats, best for media sharing, free and accessible with bots integration.
- Cons: Lack of structured features, privacy concerns, limited search functionality
Telegram for Enterprise Communication
- Pros: Fast and efficient communication, free in-app chat, bots for automation, voice and video chats.
- Cons: No business-specific features, scalability challenges, security concerns, or professional customization.
- Complete Source Code
- Lifetime Data Ownership
- Deploy on Own Server
3. Viber: Best for social messaging with voice and video calls
Viber is another end-to-end best chat app that offers the same messaging features as WhatsApp. This app has both free and paid models with standard end-to-end encryption.
Along with text messaging, Viber offers decent voice and video calls. Viber Out is a premium service that allows users to make voice calls to mobile or landline, ideally non-Viber users. Like VoIP calls, Viber Out is the best but paid feature of $5.99 per month.
Some of the best features of Viber:
- Unlimited text messaging
- Voice and video calls
- Custom stickers
- Public chat and communities
- Hidden and disappearing chat
- Viber Wink for sending self deleting image and videos
Viber for Social Collaboration
- Pros: Wide user base, free text, voice and video calls, public chats, and communities.
- Cons: File sharing limitations, privacy concerns, and limited messaging features compared to other chat platforms.
Viber for Business Collaboration
- Pros: Viber Out for international business calls, business messages, and group internal chats.
- Cons: No scalability and customization are available, no screen sharing and whiteboards, limited analytics, and a lack of dedicated business features.
4. Line: Best for chat with integrated payment
Line is an encrypted free chat app available for Android, iOS, Windows, and Mac. It has unlimited chat features and functionality. Developed by the Japan-based corporation Line, it allows users to send messages, connect voice and video calls, and even play games.
Line has different app sectors that cover major real-time chat features, such as Line Pay for integrated mobile payments and Line Timeline for current updates. This private chat app follows the letter-sealing approach for end-to-end encryption for all chats.
Some of the best Features of Line
- In-app messaging with multi-media sharing
- Individual and group voice and video calls
- Digital wallet
- Stickers and online games
Line as Social Messaging App
- Pros: Strong user base (popular in Asia), diverse features, public chats and communities, creative tools, and in-app purchases.
- Cons: Only regional focus, privacy concerns, limited group participants, and a maximum multimedia file sharing limit of 1GB.
Line as Business Collaboration App
- Pros: Free communication channels, group chats, in-app purchases
- Cons: The Line is popular as a social app but lacks a business image and focuses on the consumer market.
- Cons: The Line is popular as a social app but lacks a business image and focuses on the consumer market.
5. WeChat: Best for private messaging
WeChat is another free chat app on our list of top 10 apps with amazing features. Tencent developed this app, and it is widely used in China and other parts of the world. With WeChat, you can send and receive text, voice, and video calls. Like in Line, you can also play games on this messaging platform.
WeChat’s features include mobile payments and the ability to share live updates with friends. With end-to-end encryption, you can use WeChat on iOS, Android, Windows, and Mac.
The best Features of WeChat
- Social networking
- Instant messaging and calling
- Mobile payments
- Mini Programs: Access to third-party apps and services.
WeChat as Social App
- Pros: With the conversation in-app chat API, WeChat provides real-time messaging, one-on-one and group audio and video calls, social networking, and mini-programs.
- Cons: This app’s popularity is only regional-focused. Subject to Chinese Government censorship, limited content.
WeChat as a Business Chat APP
- Pros: Mini-programs allow the creation of customized mini-applications, official business accounts, and data analytics.
- Cons: Complex interface, no scalable options, censorship limitations, no dedicated business solutions.
6. Facebook Messenger: Best for connecting with FB friends & quick chats
Messenger is a well-known social messaging app, contrary to the popularity of Facebook. With an easy signup, you can log into Messenger without a Facebook account.
This real-time chat app includes basic messaging features. You can send text messages to groups or individuals of up to 250 people. Enjoy voice and video calls with your friends along with Snapchat-like filters. With the power of Meta AI, you can chat with bots and generate images.
While investigating encryption, Facebook Messenger is introducing end-to-end encryption. However, since it allows community messages, marketplace chats, and professional chats, those aren’t encrypted.
Some of the best Features of Messenger
- Integration with Facebook for best chat experience
- High-quality voice and video calls
- Impressive features includes stickers, GIFs, and reactions
- Supports multiple platforms including Android, iOS, and Windows.
Messenger as a Social Communication App
- Pros: Massive user base, easy to connect with people. Rich in features with Facebook integration.
- Cons: Privacy concerns, limited professional features, designed specifically for personal communication.
7. Signal: Best for privacy-focused and encrypted messaging
Signal the WhatsApp alternative for its neat and functional chat capabilities. With little room for customization (themes and backgrounds), Signal offers some of the same features as WhatsApp. This includes voice and video calling with encryption.
For extended security and privacy, Signal allows you to set expiration dates and times for messages. Once a message expires, it’s no longer recoverable. Even though you sign up with your mobile number, it’s completely masked.
Some of the best Features of Signal
- End-to-end encryption
- Unlimited voice and video calls
- Group chats
- Sealed and secured privacy
Signal as a Social Chat App
- Pros: Open source code with cross-platform compatibility with simple and intuitive UI.
- Cons: Chat backup limitations.
Signal as a Business Communication App
- Pros: Potential for customization and integration with business systems.
- Cons: Limited business features.
Why Build Your Own Chat App Rather Than Choosing?
Hope our guide on the top 10 best chat apps helps you find the right platform to start with.
However, you may not find the chat service provider with the features that you’re looking for, or it may be the one available in one app and another doesn’t.
The listed best messaging apps don’t offer flexible customization for personalized chat experience, especially for enterprise communication.
That’s why considering the way to build your own chat app using chat API will be the perfect choice.
Even though choosing the texting app from this guide saves you time, building a messaging SDK comes with customization and added features that the list can’t compete with.
Build Your Own Communication App with MirrrorFly
MirrorFly is an enterprise communication software that offers white-label chat APIs and SDKs to integrate real-time messaging, voice and video capabilities with minimal effort.
Start with the question of why MirrorFly. These SDKs are completely self-hosted and flexible to customize branding, features and even hosting based on business requirements. 1000+ in-app messaging features and covers all use cases, including healthcare, education, and call center solutions with custom security.
The good part? You can resell the messaging solution endlessly with a one-time upfront cost. Contact MirrorFly today!
Atchaya Jayabal leads Content at MirrorFly and is an expert in writing Tech, SaaS & B2B. She regularly publishes articles on CPaaS & Conversational AI in blogs.