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Head-to-head · Embedded Development IDEs

Arm Keil MDK vs nRF Connect for VS Code

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Arm Keil MDK #2 in Embedded Development IDEs 9.2/10 Free plan Free plan✓ 3 of 3 features Visit Arm Keil MDK
nRF Connect for VS Code #8 in Embedded Development IDEs 8.4/10 Free Free plan✓ 3 of 3 features Visit site

Arm Keil MDK leads on 0 checks, nRF Connect for VS Code on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreArm Keil MDK · 9.2/10
  • Free planboth

Arm Keil MDK scores higher on our rubric for embedded development ides: 9.2 against 8.4 out of 10; our editors rank them #2 and #8.

On hardware probe support, Arm Keil MDK gives you Both where nRF Connect for VS Code offers Third-party.

Arm Keil MDK is the better fit for professional Arm development. nRF Connect for VS Code is the better fit for nordic nRF developers.

  • Arm Keil MDK fits best

    Professional Arm development

  • nRF Connect for VS Code fits best

    Nordic nRF developers

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Side by side

Feature Arm Keil MDK 9.2/10 Visit ↗ nRF Connect for VS Code 8.4/10 Visit ↗
At a glance
Editor score 9.2 8.4
Ranking #2 in Embedded Development IDEs #8 in Embedded Development IDEs
Best for Professional Arm development Nordic nRF developers
Pricing model Free plan + paid Free
Starting price — Not checked yet
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Desktop, Browser extension Desktop
Platforms Web, Windows, macOS, Linux Windows, macOS, Linux
Support Tickets, Community, Docs Docs, Community
Integrations 11 integrations 7 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Arm Keil MDK 3/3 · nRF Connect for VS Code 3/3
Integrated debugging ✓ ✓
RTOS support ✓ ✓
Integrated flashing ✓ ✓
Specs
Supported targets Arm Cortex-M, Armv8-M, SecurCore and legacy Arm microcontrollers; Ethos-U processors; Fast Models nRF91, nRF70, nRF53, and nRF52 Series devices
Hardware probe support Both Third-party
Desktop platforms Linux, macOS, Windows Windows, macOS, Linux
Our review
Pros
  • Free Community tier for non-commercial Cortex-M development
  • Integrated debugger, toolchains, RTOS support, middleware, and CI workflows
  • Broad probe support including ULINK, CMSIS-DAP, ST-LINK, and J-Link
  • Free on Windows, macOS, and Linux
  • RTOS-aware debugging with integrated flashing and terminals
  • DeviceTree editing and custom-board creation tools
Cons
  • Community use is limited to non-commercial projects
  • Advanced virtualization and functional-safety tools require Professional
  • The suite spans both current MDK v6 and legacy μVision/MDK v5 components
  • Focused on Nordic nRF device families
  • Requires Visual Studio Code and the nRF Connect SDK
  • Probe support is limited to third-party hardware
Our verdict

Arm Keil MDK is a software development suite for building, testing, and debugging embedded applications on Arm targets. It is aimed at embedded developers working with Cortex-M, Armv8-M, SecurCore, legacy Arm microcontrollers, Ethos-U…

Read the review →

nRF Connect for VS Code is a Visual Studio Code extension pack for developing applications with the nRF Connect SDK. It targets Nordic nRF91, nRF70, nRF53, and nRF52 Series devices, with support for Windows, macOS, and Linux. The product…

Read the review →
  1. Arm Keil MDKEmbedded Development IDEs 9.2Free plan
  2. nRF Connect for VS CodeEmbedded Development IDEs 8.4Free

Strengths and trade-offs

  • Arm Keil MDK — where it wins

    • Free Community tier for non-commercial Cortex-M development
    • Integrated debugger, toolchains, RTOS support, middleware, and CI workflows
    • Broad probe support including ULINK, CMSIS-DAP, ST-LINK, and J-Link

    Where it doesn't

    • Community use is limited to non-commercial projects
    • Advanced virtualization and functional-safety tools require Professional
    • The suite spans both current MDK v6 and legacy μVision/MDK v5 components

  • nRF Connect for VS Code — where it wins

    • Free on Windows, macOS, and Linux
    • RTOS-aware debugging with integrated flashing and terminals
    • DeviceTree editing and custom-board creation tools

    Where it doesn't

    • Focused on Nordic nRF device families
    • Requires Visual Studio Code and the nRF Connect SDK
    • Probe support is limited to third-party hardware

More comparisons

All embedded development IDEs comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update