vlmcsd ☆

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Description:
KMS Emulator in C

Type: Formula | Latest Version: svn1113@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: kms activation microsoft emulator windows

Install: brew install vlmcsd

About:
Vlmcsd is a lightweight KMS (Key Management Service) emulator implemented in C, designed to activate Microsoft products like Windows and Office. It provides a server component that listens for activation requests and responds with valid KMS responses, enabling offline activation in local environments. The tool is known for its low resource usage and high performance.

Key Features:

Lightweight and fast C implementation
Supports multiple platforms (Windows, Linux, macOS, routers)
Includes both server (vlmcsd) and client (vlmcs) utilities
Low memory and CPU footprint

Use Cases:

Local network activation of Microsoft software without internet access
Testing and development environments requiring KMS validation
Automated deployment scripts for Windows systems

Alternatives:

py-kms – Python-based KMS server; easier to modify but higher resource usage than vlmcsd.

Version History

Detected	Version	Rev	Change	Commit
Dec 31, 2024 1:57am	svn1113	0	VERSION_BUMP	dd461454