mesibo
Scalable. Low latency. Built for production.

Own Your Messaging, Voice & Video Infrastructure

Add end-to-end encrypted chat, voice, and video to your app.

Deploy on mesibo cloud or self-host the entire platform — your data never leaves your servers.

mesibo is free and remains free until you go commercial.

$600 in free credits every yearNo credit card requiredNo questions asked

Used in 70+ countries worldwide

14,000+
Apps
3,000+
On-premise Deployments
100M+
End Users
5M+
Monthly Active Users
  • Venezia Airport
  • Capgemini
  • Unilever
  • T-Systems
  • G4S
  • Visma
  • Etihad
  • SWCC
  • LTIMindtree
  • CyberArk
  • Logitech
  • Alibaba Cloud
  • STC Pay
  • VK
  • Angkas
  • Indonesia Smart City
  • UC Berkeley
  • Princeton
  • Imperial College London
  • NTU Singapore
  • Beihang University
  • Georgia Tech
  • IIIT Allahabad
  • BITS Pilani
  • University of Michigan
  • RWTH Aachen
Designed for developers

Talk is Cheap,
Show me the Code!

In just a few lines of code, add messaging, voice and video calls, and conferencing to your app — across Android, iOS, Web, Python, and C++. The API is consistent across every platform, so what you learn once works everywhere.

Initialize
import com.mesibo.api.Mesibo
import com.mesibo.calls.api.MesiboCall

/* get a Mesibo API instance and initialize */
val api: Mesibo = Mesibo.getInstance()
api.init(applicationContext)

/* Add a Listener to receive incoming messages, delivery status,
   read receipts, presence, calls, etc */
Mesibo.addListener(this)

/* Set credentials */
Mesibo.setAccessToken(user.token)

/* Set Database to save messages for offline access */
Mesibo.setDatabase("mydb", 0)

/* start mesibo */
Mesibo.start()
Send & Receive
fun sendMessage(to: String, message: String) {
  /* get the destination user */
  val user = Mesibo.getProfile(to)

  /* send message */
  user.sendMessage(Mesibo.random(), message)
}

override fun Mesibo_onConnectionStatus(status: Int) {
  /* called when connection status changes, user goes online/offline */
}

override fun Mesibo_onMessage(params: Mesibo.MessageParams?, data: ByteArray?): Boolean {
  /* called when a message is received */
}

override fun Mesibo_onMessageStatus(params: Mesibo.MessageParams) {
  /* called when delivery status, read-receipt, etc. are received */
}

override fun Mesibo_onActivity(params: Mesibo.MessageParams?, presence: Int) {
  /* called when a presence indicator (Typing, Online, etc) is received */
}
View full code on GitHub →
Complete Platform

Everything You Need to Build Any Communication App

mesibo provides the full stack of real-time communication APIs — messaging, calls, conferencing, chatbots, location, and more — so you can build any app without stitching together multiple vendors.

Messaging & Group Chat

One-to-one and group messaging with rich media — images, video, files, location, and custom objects. Includes delivery receipts, read receipts, typing indicators, online presence, offline messaging, and message scheduling.

Documentation →

Voice & Video Calls

End-to-end encrypted HD and 4K video and voice calls with multiple camera support, screen sharing, custom rings, and in-call sounds. mesibo does not charge extra for peer-to-peer calls.

Documentation →

Conferencing & Streaming

Conference rooms, broadcast rooms for large audiences, classrooms with interactive sessions, and virtual events with 360° multi-camera support. Per-participant permission control and dynamic resolution included.

Documentation →

End-to-End Encryption

Military-grade end-to-end encryption with a single line of code. The mesibo E2EE protocol is among the strongest available, protecting every message and call from sender to receiver.

Documentation →

Chatbots & Scripting

JavaScript-based message processing framework for chatbots, content moderation, translation, and automated responses. Connect to LLMs, external APIs, and TCP/HTTP services with ease.

Documentation →

Location APIs

Share user and group locations in real time, subscribe to location updates, and search for users and groups by distance. Geotagging support for location-aware messages and events.

Documentation →

User & Contact Management

Rich user profiles with multiple images, app-specific data, and multi-level access control. Phone contact sync, profile pairing, blocking, restricted communication, and real-time profile subscriptions.

Documentation →

Multi-device & Multi-tab

Users can log in simultaneously from multiple devices and browser tabs. Messages, groups, profiles, and call history sync in real time across all sessions automatically.

Documentation →

Push Notifications

Keep users informed even when your app is in the background. Native support for Android FCM, Apple APN, iOS through FCM, multiple APN certificates, silent background push, and visible alert push.

Documentation →

Not sure if mesibo covers all your specific requirements?

Your infrastructure. Your data. Your rules.

Self-host the mesibo Platform on Your Own Servers

Download and run the entire mesibo platform on your own servers or private cloud — at no extra cost. Every message and call stays within your data center, integrated directly with your enterprise database.

Deploy on your own servers

Run the complete mesibo platform on-premise or in your private cloud, seamlessly integrating with your enterprise database. All messages and calls route exclusively through your infrastructure — no vendor lock-in, no data leaving your premises.

Neither mesibo nor anyone else has access to your data.

Learn about self-hosting →
mesibo on-premise deployment

Carrier Grade High Availability

Run multiple mesibo instances across your infrastructure — if any server fails, standby instances take over automatically, keeping your service running smoothly through hardware faults, network outages, or even data center incidents.

High availability cluster

Regulatory compliance

Since you control the infrastructure, compliance follows naturally. Self-hosted mesibo keeps all data within your jurisdiction, enabling you to meet GDPR, HIPAA, ISO 27001, SOC 2, and PIPEDA requirements.

Regulatory compliance badges
mesibo scalability architecture
Performance & Reliability

Scalable. Low latency. Built for production.

A prototype runs fine with a handful of users — until it hits critical mass and crashes. Production demands more: a platform where scalability, performance, and reliability are foundational, not an afterthought.

  • Scalable architecture

    A distributed architecture with load balancing across server clusters, automatic failover, redundancy at every layer, and database replication — so your app handles critical mass without breaking a sweat.

  • Ultra-low latency

    mesibo is written in high-performance C/C++ with a custom async processing engine and a purpose-built binary protocol — not a scripting runtime wrapped around sockets. Messages are delivered in milliseconds, not seconds.

mesibo's carrier-grade platform is trusted by governments, Fortune 500 companies, telemedicine providers, and financial institutions — mission-critical deployments where scalability, security, and reliability are non-negotiable.

Pricing

No toy-scale free tier. The full platform, free until you ship.

Most platforms give you a crippled free plan designed to force an upgrade. mesibo is different — you get the complete, production-ready platform from day one and pay only when your app goes commercial.

See full pricing→Compare Competitors→

  • Simple pricing, no artificial limits

    No complicated plans — just free or a simple commercial pay-as-you-go rate. Either way you get the same full-featured platform without restriction, not a crippled version designed to force an upgrade.

  • Free until you go commercial

    Build, test, and iterate with real users at no cost. You only start paying when you launch commercially or have funding — not before.

  • Cloud or self-hosted

    Run on mesibo cloud or deploy the entire platform on your own servers. You don't pay anything extra for On-premise — it is included at the same flat rate.

  • Free for education & non-profits

    Students, academic institutions, registered non-profits, and apps with a social or ecological mission get full access at no charge.

Ready. Set. Build — It's Free

Get started in just 5 minutes

Follow our step-by-step tutorial to add messaging, voice, and video to your apps — whether you're building for Android, iOS, Web, Python, or C++. It's faster than you think.

Read the Tutorial →Sign in to Console →

No payment or sign-up details required. mesibo is free until you launch commercially. Educational institutions, students, research organizations, and climate-focused non-profits get full access free permanently — our commitment to society and the environment.