Threat Stack is described as 'Helps you protect your cloud from intrusions & data loss by continuously monitoring and providing insights into your system activity' and is an website in the security & privacy category. There are five alternatives to Threat Stack, not only websites but also apps for a variety of platforms, including Self-Hosted, Slack, Mac and Windows apps. The best Threat Stack alternative is ProtectWise. It's not free, so if you're looking for a free alternative, you could try Beacon (AWS Cloud Security on Slack). Other great sites and apps similar to Threat Stack are Sift Security, Kloudle and Evident.io.