What is Mongoose OS used for?

Mongoose OS is an open source operating system for IoT firmware development, supporting multiple microcontrollers and cloud integrations. It is a good fit for IoT firmware development for microcontrollers and building connected devices with cloud integration.

Is Mongoose OS open source?

Yes. Mongoose OS is open source under a custom licence. Its source code is on GitHub at cesanta/mongoose-os and is written mainly in C.

Yes. Mongoose OS is open source, so the software itself is free to use under the terms of its own licence.

Can I self-host Mongoose OS?

Yes. Mongoose OS can be self-hosted on your own server or infrastructure.

What is Mongoose OS an alternative to?

Mongoose OS is an open-source alternative to Blynk. Other open-source alternatives to Blynk include ESPHome, Home Assistant and DGIoT.

Is Mongoose OS actively maintained?

Yes. The most recent commit to Mongoose OS was on 30 September 2026, and the latest release is 2.20.0, published on 15 December 2021. The project has 2.7k stars on GitHub.

Mongoose OS: open-source alternative to Blynk

About Mongoose OS

Mongoose OS is an IoT firmware development framework that supports microcontrollers such as ESP32, ESP8266, CC3220, CC3200, STM32F4, STM32L4, and STM32F7. It integrates with Amazon AWS IoT, Microsoft Azure, and Google IoT Core. Developers can code in C or JavaScript.

The framework has been powering commercial products since 2014 and is deployed in millions of production devices. It provides reliable OTA updates and is supported by a community forum and chat.

Key features

Supports multiple microcontrollers: ESP32, ESP8266, CC3220, CC3200, STM32F4, STM32L4, STM32F7
Integrated with Amazon AWS IoT, Microsoft Azure, and Google IoT Core
Code in C or JavaScript
Reliable OTA updates
Powers commercial products since 2014

Good fit for

IoT firmware development for microcontrollers
Building connected devices with cloud integration

Built with: C tools
Tags: iot; firmware; microcontroller; esp32; esp8266; stm32

Mongoose OS: questions and answers

What is Mongoose OS used for?: Mongoose OS is an open source operating system for IoT firmware development, supporting multiple microcontrollers and cloud integrations. It is a good fit for IoT firmware development for microcontrollers and building connected devices with cloud integration.
Is Mongoose OS open source?: Yes. Mongoose OS is open source under a custom licence. Its source code is on GitHub at cesanta/mongoose-os and is written mainly in C.
Is Mongoose OS free?: Yes. Mongoose OS is open source, so the software itself is free to use under the terms of its own licence.
Can I self-host Mongoose OS?: Yes. Mongoose OS can be self-hosted on your own server or infrastructure.
What is Mongoose OS an alternative to?: Mongoose OS is an open-source alternative to Blynk. Other open-source alternatives to Blynk include ESPHome, Home Assistant and DGIoT.
Is Mongoose OS actively maintained?: Yes. The most recent commit to Mongoose OS was on 30 September 2026, and the latest release is 2.20.0, published on 15 December 2021. The project has 2.7k stars on GitHub.