---
title: "What Tech Stack Does WhatsApp Use? | UniqueSide"
description: "WhatsApp stack: React Native frontend, Erlang, FreeBSD backend, Mnesia, MySQL."
url: "https://www.uniqueside.io/tech-stack/whatsapp"
canonical: "https://www.uniqueside.io/tech-stack/whatsapp"
type: "tech-stack"
date: "2026-05-29"
lastmod: "2026-06-07"
---

# What Tech Stack Does WhatsApp Use?

End-to-end encrypted messaging and calling app. Below is the stack powering WhatsApp, based on widely reported engineering information.

## WhatsApp Tech Stack

- **Frontend:** React Native
- **Backend:** Erlang, FreeBSD
- **Database:** Mnesia, MySQL
- **Hosting / Cloud:** Meta Infrastructure
- **Notable Tools:** Erlang, ejabberd, Mnesia, XMPP

## How to Build a Product Like WhatsApp

You do not need WhatsApp's full stack to launch. A lean, modern stack (Next.js, Node.js, a managed database) covers the core capabilities; adopt heavier infrastructure only as you scale. UniqueSide builds production-ready MVPs on stacks like this in 15 days, from $8,000.

[MVP development service](https://www.uniqueside.io/services/mvp-development) · [Technologies we use](https://www.uniqueside.io/technologies) · [Start a project](https://tally.so/r/wdaQ1N)