Arm Keil MDK vs Particle Web IDE

Arm Keil MDK is a toolchain for embedded software targeting Cortex-M and Ethos-U processors. MDK v6 supports command-line, IDE, and continuous-integration workflows across major operating systems. It includes Keil Studio extensions for Visual Studio Code, Keil μVision, Arm Compiler for Embedded, and Arm Fixed Virtual Platform models. Software packs add device and board support, middleware, components, code templates, and example projects independently of the toolchain. Keil Studio supports CMSIS workflows with an integrated debugger and extensions for creating, building, and testing embedded applications. Listed integrations include CMSIS-FreeRTOS, Keil RTX5, MDK-Middleware, IoT clients, CMSIS-DAP, ULink, and third-party debug adapters. Community is for non-commercial use. The listed MDK v6 Essential plan costs $99 a month per license; Professional costs $199 a month per license and adds Arm Virtual Hardware, functional-safety compiler tools, and legacy tools including Arm Compiler 5. Keil μVision is available only for Windows hosts.

Particle Web IDE is a browser-based development environment for Particle device platforms. It supports C and C++, firmware debugging, and deployment to Particle devices running Particle Device OS. The supported boards exclude Tracker One and Tracker SoM, and the IDE does not include a device simulator. The Free plan costs nothing, billed forever, and covers 100 devices and 100K Data Operations per month. Basic costs $299 a month per block and includes 100 devices and 720K Data Operations per month per block. Plus costs $599 a month per block, with 100 devices and 5M Data Operations per month per block. Professional and Enterprise use custom pricing: Professional lists premium support options, while Enterprise lists customized Data Operations packages. The available plans therefore specify different device and monthly Data Operations allowances, with custom-priced options for tailored packages or support. Particle Web IDE is web-only.