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Arm Keil MDK vs ESP-IDF Extension for VS Code

Both stand on embedded systems toolchains. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Arm Keil MDK

Free plan APIExtensionLinux+3

Keil MDK combines an IDE, CLI, compiler, and separately addable software packs for embedded development. Check host requirements and plan costs, especially if your workflow depends on μVision or Professional features.

Visit Arm Keil MDK

ESP-IDF Extension for VS Code

Free plan ExtensionLinuxMac+1

The extension provides a broad ESP-IDF development workflow inside Visual Studio Code, from project setup to flashing and debugging. Developers should check the platform prerequisites and confirm their target chip is supported.

Visit ESP-IDF Extension for VS Code

The facts

Arm Keil MDKESP-IDF Extension for VS Code
Free planYesYes
Open sourceNoNot published
Runs onAPI, Extension, Linux, Mac, Web, WindowsExtension, Linux, Mac, Windows
Lowest paid planKeil MDK v6 Essential: 82.39 CHF a monthFree or on request
Plans published61
MakerNot publishedNot published
Websitekeil.arm.comdocs.espressif.com
On embedded systems toolchains#1 of 30#4 of 30

Arm Keil MDK: what it does well

  • Supports IDE, command-line, and CI workflows
  • Software packs add components and example projects
  • Keil Studio includes an integrated debugger
  • Supports listed RTOS and debug-adapter integrations
  • Community plan covers non-commercial use

What to know first

  • Keil μVision is available only on Windows hosts
  • Essential costs $99 a month per license
  • Professional costs $199 a month per license

ESP-IDF Extension for VS Code: what it does well

  • Builds projects with CMake and Ninja.
  • Flashes devices over UART, DFU, or JTAG.
  • Includes device and postmortem debugging.
  • Offers tracing, coverage, and binary-size tools.
  • Free and open source under Apache License 2.0.

What to know first

  • Visual Studio Code is required.
  • macOS and Linux have system prerequisite instructions.
  • Targets ESP-IDF projects for Espressif chips.

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