Mongoose
Embedded Web UI Framework for Production Device Dashboards
Mongoose is a two-file C networking library for microcontrollers
that combines TCP/IP, HTTP, WebSocket, MQTT, TLS, OTA, and
device-dashboard infrastructure. Build production-ready browser
UIs without stitching TCP/IP stack, web servers, TLS, frontend code, and
firmware glue together.
The Problem
Adding a web server from SDK examples is easy.
Building a production-ready device dashboard is not.
You need HTTP, WebSocket, TLS, OTA updates, file uploads, login,
permissions, live data, charts, and device logic to work together
without turning firmware into spaghetti.
And then you own it for years - including security scans and fixes.
Mongoose can get up to 100 security reports in a month because
it is public and widely used. A private home-grown stack may have
similar issues, but your team may never find them without continuous
security work. With CRA, security is no longer optional.
The Solution
Stop stitching networking pieces together. Avoid months of integration risk.
Build on a proven, production-ready framework designed for embedded device dashboards.
With Mongoose, you get a security-tested, CRA-compliant solution backed by a team that works on security continuously.
Use Mongoose. Ship fast with confidence.
Supported Platforms
Mongoose is extremely cross-platform - it runs on STM32,
ESP32, NXP, RP2040/RP2350, Renesas, Microchip,
Embedded Linux, desktop Windows/Linux/MacOS, and many other
architecture.
See the supported hardware documentation page for
an extensive list and feature support matrix.
Get running in minutes
Full Production Dashboard Example
Real-time metrics, live graphing, LED control, settings,
file manager, and firmware OTA in one embedded web UI
Run it locally:
The integration guide above works for any MCU, RTOS, or bare metal target.
Pre-built downloads below are provided for a few popular boards only.
A Minimal LED Control
A very simple minimal LED control dashboard.
Ideal for learning the concepts and as a starting point to
build something completely custom.
Run it locally:
The integration guide above works for any MCU, RTOS, or bare metal target.
Pre-built downloads below are provided for a few popular boards only.
What Mongoose brings out of the box
Online/offline status
Users can immediately tell whether they are seeing live device state or stale data.
Synchronised changes
Changes made in one browser window are reflected in the others.
Unsaved form edits
Edited settings are visibly different from values currently stored on the device.
Real-time updates and graphs
Metrics, logs, and graph data can update without refreshing the page.
Built-in Firmware updates
Users can update firmware from the dashboard using upload or URL-based periodic pulls.
Conditional displays
Important device states can change color, visibility, or available actions automatically.
Keep your TCP/IP stack, or replace it
Use your stack, like lwIP or Zephyr - or switch to Mongoose’s independent built-in stack.
Login and Access levels
Give administrators edit access while keeping other users read-only.
File uploads and logs
Let users inspect device logs and upload or download files without separate tools.
Simple C dashboard API
Build the device side with ordinary C code and a small API, no TCP/IP experience required.
AI-assisted dashboard HTML
Build dashboard.html with AI in hours, then attach it to a device through a robust, tested API.
CRA compliance support
Our team works on security reports continuously, helping keep your product safe and ready for CRA compliance.
What is Mongoose
Mongoose framework combines a networking library and a visual Web UI
builder
Networking library
Networking library contains TCP/IP stack + embedded web server
+ websocket + mqtt + ota updates in one event-driven library.
It is open source, most popular in its category -
12k+ stars on Github.
+
Web UI Wizard
Mongoose Web UI builder allows to build pro device dashboards
fast - no frontend skills needed.
Embedded Web UI Examples
Developers use Mongoose to build browser-based user interfaces for
embedded devices. These interfaces allow users to configure devices,
monitor system status, and control hardware from a standard web browser.
Examples include:
Device dashboards
Settings panel, status monitoring
and control, real-time graphs display
REST API
Automated health checks,
remote device control
Firmware OTA updates
OTA using file upload, or via periodic URL checks,
or via cloud MQTT
Embedded Web Server for Microcontrollers
Many embedded web interfaces start from vendor networking examples such
as the lwIP httpd example on STM32 or Zephyr's built-in HTTP server.
These examples work for simple demos but become difficult to extend
when adding TLS, WebSocket communication, device APIs, or real-time
dashboards.
Mongoose provides a complete alternative.
It includes an embedded HTTP server, WebSocket support, MQTT, TLS security, and dashboard infrastructure in a single event-driven framework. Mongoose can run on top of lwIP or Zephyr, or it can operate as a stand-alone TCP/IP stack, replacing lwIP while providing a full embedded web server for microcontrollers.
Mongoose architecture
Embedded device web interfaces follow a layered architecture:
TCP/IP stack → TLS → application protocols such as HTTP, WebSocket, or MQTT → the device dashboard. Mongoose provides these layers as a single integrated framework, allowing developers to build browser-based dashboards and APIs directly on microcontrollers.
Build Faster with a Mongoose Engineer
Schedule a free, hands-on 45-minute session to troubleshoot or optimize development on your own hardware (e.g., solve issues or optimize WebUI). Please have your device and dev environment ready.
Features
All-in-one
Drivers, TCP/IP, TLS, HTTP, WebSocket,
MQTT, JSON, and OTA in
two files only.
Mongoose Wizard
Build pro device dashboards fast - no frontend skills needed.
Cross-platform
Runs everywhere - on popular microcontrollers and on desktop and mobile
platforms, letting teams reuse infrastructure across products
Fits your firmware
Works with lwIP, Zephyr, NetX, or standalone. On any RTOS or
bare metal.
Tiny footprint
Runs on 8-bit MCUs with 6 KB RAM. Built-in TLS enables fast
handshakes, using ~50 KB flash and only a few KB RAM per
connection.
Security & EU CRA compliance
Get private security fixes before CVEs go public - patch early,
stay safe.
Firmware OTA updates
Built-in OTA updates - no need to build your own system.
Support by authors
Support comes from the engineers who built it all. You're never on your own.
Best in class
12k+ Github stars. Runs on ISS by NASA. Licensed by
hundreds of companies, big and small.
Mongoose is a reliable embedded web server and complete networking framework.
What our Customers say
See case studies for more
Licensing
Mongoose is dual-licensed: GPLv2 and
commercial. Use GPLv2 for evaluation and
prototyping. Choose a commercial license when shipping production
devices.
GPLv2 Open Source
Great for evaluation, prototypes, and learning. Explore the
repository and documentation to get started quickly.
Commercial licensing
For shipping proprietary firmware at scale, with developer-led
support and a security workflow aligned with production needs.