# Keil

> Publicly sourced profile assembled by Optimly, in the Optimly AI Brand Index. Last refreshed 2026-10-04.

- **Business Profile:** https://optimly.ai/brand/keil
- **Dataset:** https://optimly.ai/brand/keil.json
- **Markdown:** https://optimly.ai/brand/keil/llms.txt
- **Official website:** https://keil.com
- **Slug:** keil
- **Categories:** developer-tools

## Overview

- **Tagline:** A complete software development environment for Arm Cortex-M based microcontrollers, supporting over 10,000 devices. It integrates Keil Studio, µVision IDE and debugger, Arm C/C++ compiler, and essential middleware. Key features include safety-certified components (Arm FuSa RTS), high-performance ULINK debug adapters (pro, plus), and extensive support for both modern and legacy microcontroller architectures (8051, C166).
Source: Brand's website (https://keil.com) · 2026-10-04

- **Description:** Keil provides comprehensive software development environments for microcontrollers, including Integrated Development Environments (IDEs), debuggers, C/C++ compilers, and middleware. It supports a wide range of architectures such as Arm Cortex-M, 8051, and C166, catering to embedded application developers with tools like the MDK (Microcontroller Development Kit), Keil Studio, µVision IDE, Arm C/C++ compiler, and ULINK debug adapters.
Source: Brand's website (https://keil.com) · 2026-10-04

## Offerings

- **Core capabilities:**
  - Keil MDK (Microcontroller Development Kit)
  - Keil Studio
  - µVision IDE and debugger
  - Arm C/C++ compiler
  - MDK-Middleware
  - Arm Run-Time System for Functional Safety (FuSa RTS)
  - ULINK Debug Adapters
  - Keil C51 Development Tools
  - Keil C166 Development Tools.
Source: Brand's website (https://keil.com) · 2026-10-04

- **Pricing:** Offers free editions of MDK for commercial use for specific Cortex-M0/M0+/M23 devices; implied paid licensing for full features and other architectures.
Source: Brand's website (https://keil.com) · 2026-10-04

## Audience

- **Target industry:** Embedded systems developers, engineers working with Arm Cortex-M based microcontrollers, 8051-compatible devices, and Infineon C166/XC166/XE166/XC2000/ST10 microcontroller families, silicon vendors.
Source: Brand's website (https://keil.com) · 2026-10-04

Page last updated 2026-10-17.