Best Open Source AWS GuardDuty Alternative
A curated collection of the 1 best open source and self-hosted alternatives to AWS GuardDuty in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for AWS GuardDuty in 2026? The top open-source alternative is ProjectDiscovery — AI-powered security testing for continuously shipped software.
AI-powered security testing for continuously shipped software
Neo applies reasoning, memory, and real execution across the delivery lifecycle — so security keeps up with continuously shipped software. From the creators of Nuclei, trusted by over 100,000 security professionals. - Continuous Testing: Maps and tests all exposed assets (domains, APIs, endpoints, ports, cloud services) in real-time as infrastructure changes - Parallel Layer Testing: Specialist workflows test applications, APIs, code, and infrastructure simultaneously, drawing context from code, tickets, and past findings - Verified Findings: Every issue is reproduced before reporting, with exploitable vulnerabilities routed directly to engineering teams - Memory & Learning: Each run deepens the map of your codebase, dismissed false positives stay dismissed, and new community detections are integrated daily - Community-Powered Coverage: Tracks new CVEs, CISA KEVs, public exploits, and internet exposure for fastest detection of emerging threats - Benchmark Accuracy: Achieves 3x more critical findings with 5x fewer false positives compared to traditional scanners - Triage Efficiency: Cuts triage time by 95% and enables 3x faster remediation - Real-Time Discovery: Provides continuous monitoring of every domain, API, and endpoint - Open Source Foundation: Built on Nuclei and other open-source tools from ProjectDiscovery - Cloud & Self-Hosted Options: Available via ProjectDiscovery Cloud or self-hosted deployments - Integration Ready: Connects with existing security workflows, ticketing systems, and development pipelines - Documentation: Comprehensive guides available at docs.neo.projectdiscovery.io Neo is designed for offensive security teams running security as infrastructure, with AI specifically engineered for security workflows rather than general-purpose applications.
About AWS GuardDuty
Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and anomalous behavior to protect AWS accounts, workloads, and data. It leverages machine learning and integrated threat intelligence to identify potential security threats in real-time.
Key Features of AWS GuardDuty
- Continuous Monitoring: 24/7 threat detection across AWS accounts and workloads
- Anomaly Detection: Uses machine learning to identify unusual patterns and behaviors
- Threat Intelligence: Integrates with AWS and third-party threat intelligence feeds
- Automated Response: Supports automated remediation actions through AWS Lambda
- Multi-Service Integration: Works with Amazon S3, EC2, IAM, and other AWS services
- Cost-Effective: Pay-as-you-go pricing model with no upfront costs
- Compliance Ready: Helps meet regulatory compliance requirements for security monitoring
Tech / Self-Hosting
GuardDuty is a fully managed AWS service that requires no self-hosting or infrastructure management. It operates within the AWS ecosystem and integrates seamlessly with other AWS security services like AWS Security Hub and Amazon Detective.