diff --git a/README.md b/README.md
index 9047c42..5fcaf01 100644
--- a/README.md
+++ b/README.md
@@ -50,6 +50,7 @@ From [Wikipedia](https://en.wikipedia.org/wiki/Software_bill_of_materials):
 |Interlynk [SBOM Grep](https://github.com/interlynk-io/sbomgr)| |CycloneDX,SPDX||CycloneDX,SPDX|||||CycloneDX,SPDX|
 |Interlynk [SBOM Find & Pull](https://github.com/interlynk-io/sbomex)| || |CycloneDX,SPDX| | | | |CycloneDX,SPDX|
 |Google [osv-scanner](https://github.com/google/osv-scanner)| |CycloneDX,SPDX|
+|[GUAC](https://guac.sh)| |CycloneDX,SPDX| |CycloneDX,SPDX| |CycloneDX,SPDX|CycloneDX,SPDX|CycloneDX,SPDX|(many)
 |[Kubernetes SBOM Tool](https://sigs.k8s.io/bom)|SPDX|
 |Microsoft [SBOM tool](https://github.com/microsoft/sbom-tool)|SPDX|
 |OSS Review Toolkit [ORT](https://github.com/oss-review-toolkit/ort)|CycloneDX,SPDX |