Moddable-OpenSource/moddable

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1551 stars · 277 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

The Moddable SDK is a development toolkit and runtime for building IoT applications in standard JavaScript on low-cost microcontrollers like ESP32, ESP8266, and nRF52. It centers on the XS JavaScript engine, which implements the ECMAScript standard with high conformance while running in as little as 45 KB of memory.

Use cases

• build IoT products with JavaScript on microcontrollers
• run JavaScript on ESP32 or ESP8266
• create firmware for constrained embedded devices
• develop touchscreen UIs for smart appliances
• add BLE or MQTT connectivity to embedded hardware
• prototype connected devices without writing C

When to choose

• you want to use JavaScript instead of proprietary embedded SDKs
• your target microcontroller has very limited RAM and flash
• you need standards-conformant JavaScript on embedded hardware
• you're building consumer or industrial IoT products with displays and networking

When to avoid

• you need maximum performance or hard real-time guarantees
• your team only knows C/C++ embedded workflows
• you're targeting Linux-class single-board computers rather than microcontrollers
• you require a permissively licensed open-source project (the repo has no license file)

Facets

framework · maturity active

sdk interpreter networking graphics build-tool developer-tools iot embedded-systems programming-languages developer-tools embedded iot windows wasm javascript-engine xs-engine microcontrollers embedded-javascript iot-sdk ecma-419 ble mqtt macos linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="Moddable-OpenSource/moddable")