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UltimateAntiCheat

Free#20 of 22 in Game Anti-Cheat Software

UltimateAntiCheat: A customizable Windows reference project for common client-side cheat checks. Ranked #20 of 22 in Game Anti-Cheat Software by our editors (6.8/10); pricing: Open source; best for developers building custom Windows protections.

6.8/10Editor score

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UltimateAntiCheat6.8 Visit site

At a glance

Editor score
6.8 / 10
Pricing
Open source
Best for
Developers building custom Windows protections
Paid from
Free
Supported platforms
Pc
Facts checked
20 Sep 2026

Where it wins
- Covers memory, code, modules, debuggers, processes, and signatures
- Supports source-code or static-library integration
- Includes optional client-server heartbeat networking
Where it doesn't
- Windows-only, with no verified platform integrations
- No developer SDK or server-side detection
- Kernelmode support requires the user's own driver

Our verdict on UltimateAntiCheat

UltimateAntiCheat is an open-source C++ anti-cheat system for developers building custom protections for Windows games and other software. Its stated purpose is primarily educational, giving teams a reference implementation for detecting common game-hacking techniques. The project uses a usermode approach and can be integrated through source code or as a static library. It is positioned for developers who want to study, adapt, and extend anti-cheat checks rather than adopt a complete cross-platform service.

Its strongest area is the breadth of client-side checks included in the project. UltimateAntiCheat covers memory and code-section integrity, manually mapped modules, debuggers and kernel debuggers, unsigned modules, signatures, suspicious processes, process handles, Secure Boot, and test-signing mode. Optional client-server heartbeat networking adds a way to monitor client connectivity. The project also describes an optional hybrid kernelmode approach, but that path depends on the user supplying a driver. These capabilities make it useful as a focused starting point for teams comfortable with C++ and Windows security work.

The trade-off is that UltimateAntiCheat leaves important product and deployment responsibilities with the developer. It is Windows-only, has no developer SDK, provides no server-side detection, and does not include hardware bans. There are also no verified platform integrations, so teams must plan their own surrounding services and operational processes. Choose it when educational value, source-level customization, and a narrow Windows target matter most. Choose another option when you need broader platform coverage, an SDK-led integration, server-side detection, or a packaged kernel-level solution.

Your product? Our editors can test UltimateAntiCheat in depth and publish a review, labelled as paid · from $149/mo →

UltimateAntiCheat pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

UltimateAntiCheat fact sheet

Free plan	Not verified
Paid from	Free
Supported platforms	Pc
Kernel-level client	No
Server-side detection	No
Developer SDK	No
Deployment model	On-premises
Hardware bans	No
Game engine support	Not verified
Deployment	Desktop, Self-hosted
Platforms	Windows
Support	Community, Docs
Built for	Solo, Small business (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	20 Sep 2026

Alternatives to UltimateAntiCheat

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Featured on iTechGuides

UltimateAntiCheat is listed in our Game Anti-Cheat Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update