diff --git a/README.md b/README.md
index 4a0cc13..e08772c 100644
--- a/README.md
+++ b/README.md
@@ -131,6 +131,7 @@ Open-source and commercial tools that enable GRC Engineering practices — polic
 | [**Compliance Trestle**](https://github.com/oscal-compass/compliance-trestle) | OSCAL-native compliance-as-code platform for CI/CD authoring, validation, and governance of compliance artifacts in git. |
 | [**claude-grc-engineering**](https://github.com/GRCEngClub/claude-grc-engineering) | Claude Code plugin suite for evidence collection, SCF crosswalks, multi-framework gap reports, and OSCAL workflows. |
 | [**Compliance to Policy (C2P)**](https://github.com/oscal-compass/compliance-to-policy) | Bridges OSCAL compliance-as-code with policy-as-code engines (Kyverno, OCM, Auditree); generates policies and ingests assessment results. |
+| [**StandardOS**](https://getstandardos.com) | ISO 27001 and ISO 42001 compliance software with pre-mapped controls, risk register, and policy templates. |
 | [**How to Harden**](https://github.com/grcengineering/how-to-harden) | Community-developed open-source hardening guides focused on cloud services and integration / supply-chain attack prevention. |
 | [**Open Source Cybersecurity Training**](https://github.com/emreugurlu/open-security-training) | Free SCORM-compatible interactive security & privacy training modules — phishing, CEO fraud, secure coding, and more ([live demo](https://emreugurlu.github.io/open-security-training/)). |
 | [**GRC Engineering Lab Builder**](https://grc.engineering/grc_engineering_lab_builder/) | Static-site generator for hyper-personalized GRC engineering lab prompts (Claude, ChatGPT, Gemini-compatible) — [source](https://github.com/grcengineering/grc_engineering_lab_builder). |