Open-source Sysdig alternatives

Trivy is a security scanner from Aquasec, written in Go and released under the Apache-2.0 license. It has scanners that look for different security issues and targets where those issues can be found. The README describes it as comprehensive and versatile, and it covers the major programming languages, operating systems and platforms.

Targets include container images, filesystems, remote Git repositories, virtual machine images and Kubernetes. Scanners look for OS packages and software dependencies in use, which produces an SBOM, known vulnerabilities (CVEs), infrastructure-as-code issues and misconfigurations, sensitive information and secrets, and software licenses. Its topics reference DevSecOps and vulnerability scanning.

Trivy is available through most common channels, including Homebrew, a Docker image and downloadable binaries, and integrates with platforms such as GitHub Actions, a Kubernetes operator and a VS Code plugin. Canary builds are produced with each push to the main branch. It suits developers, platform teams and security engineers who want to scan images and code in CI pipelines.

Kubescape is an open-source Kubernetes security platform that covers the lifecycle from development to runtime. It was created by ARMO and is a Cloud Native Computing Foundation incubating project. It works in an IDE, in CI/CD pipelines and against running clusters, with the aim of saving administrators time on risk analysis and compliance work.

Misconfiguration scanning checks clusters, YAML files and Helm charts against NSA-CISA guidance, MITRE ATT&CK and CIS Benchmarks. Image vulnerability scanning detects CVEs using Grype, image patching uses Copacetic, and auto-remediation can fix manifest issues. Admission control uses Validating Admission Policies, runtime monitoring is eBPF-based through Inspektor Gadget, and an MCP server connects AI assistants.

Kubescape is written in Go and released under the Apache-2.0 license. It installs through options such as Homebrew and Krew, and an in-cluster operator is available for continuous scanning. Results include an overview of control plane status, access control risks, workload misconfigurations, network policy gaps and compliance scores.

Falco is a cloud native runtime security tool for Linux. It detects and alerts on abnormal behavior and potential security threats in real time. At its core it is a kernel monitoring and detection agent that watches events such as system calls and evaluates them against custom rules.

Falco can enrich events with metadata from the container runtime and from Kubernetes, and the collected events can be analyzed off-host in SIEM or data lake systems. The project is split across repositories in the falcosecurity organization: the main repo holds the Falco binary, while others hold the core libraries and kernel drivers, the official ruleset, and plugins that extend detection beyond syscalls and container events.

Falco was originally created by Sysdig and is a graduated project of the Cloud Native Computing Foundation, used in production by various organizations. It is written in C++ and released under the Apache-2.0 license, with a change log and detailed documentation on falco.org. Topics in the repository mention eBPF-based collection.