Windiff

Tool that allows comparing symbol, type and syscall information of Microsoft Windows binaries across different versions of the OS, using a Web UI and/or LLMs.

by ergrelet 390 GitHub stars GPL-3.0-only Updated Jul 30, 2026
Windiff skill by ergrelet
Windiff — Frontend skill by ergrelet

Overview

Windiff is an open-source frontend skill for Claude Code and compatible agents, published by ergrelet. Its author describes it as: “Tool that allows comparing symbol, type and syscall information of Microsoft Windows binaries across different versions of the OS, using a Web UI and/or LLMs.”. The project has 390 stars on GitHub and is available under the GPL-3.0-only license. Add it to your setup with `git clone https://github.com/ergrelet/windiff ~/.claude/skills/windiff`.

Best for

Installation

Add Windiff to your agent with:

git clone https://github.com/ergrelet/windiff ~/.claude/skills/windiff

Review a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.

Supported agents

Neither the skill nor its repository names a specific agent. It uses the SKILL.md format, which several agents can load — check the repository for any agent-specific requirements.

License

Windiff is published under the GPL-3.0-only license.

Strengths

  • Clear GPL-3.0-only license — safe to read and adapt within its terms
  • Established project with 390 GitHub stars
  • Actively maintained — repository updated in the last 90 days

Author

ergrelet 1 skill in the catalog · GitHub profile ↗

Topics

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Frequently asked questions

What does Windiff do?
Tool that allows comparing symbol, type and syscall information of Microsoft Windows binaries across different versions of the OS, using a Web UI and/or LLMs.
How do I install Windiff?
Run git clone https://github.com/ergrelet/windiff ~/.claude/skills/windiff in your agent, then reload your skills. Review the source at https://github.com/ergrelet/windiff before installing.
Is Windiff free to use?
Yes. Windiff is free and open source under the GPL-3.0-only license, so you can read, run, and adapt it within that license's terms.

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