Open-source Socket 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.

Grype is an open-source vulnerability scanner for container images and filesystems. You point it at an image, a directory or a software bill of materials (SBOM), and it reports known vulnerabilities in the packages it finds, so teams can catch risky dependencies before software ships.

It covers major operating system package ecosystems such as Alpine, Debian, Ubuntu, RHEL, Oracle Linux and Amazon Linux, as well as language packages for Ruby, Java, JavaScript, Python, .NET, Go, PHP and Rust. Docker, OCI and Singularity image formats are supported. Results can be prioritized with EPSS, KEV and risk scoring, and OpenVEX documents can filter or augment findings.

Grype is written in Go and released under the Apache-2.0 license. It can be installed through Homebrew, Docker, Chocolatey, MacPorts and other routes, and the documentation includes a getting started guide, CLI reference and configuration reference. Development is sponsored by Anchore, which also handles commercial support requests for Grype and its companion tool Syft.

Dependency-Track is a component analysis platform from the OWASP community that helps organizations identify and reduce risk in their software supply chain. It takes an approach built on the Software Bill of Materials (SBOM), analyzing the components listed for each project.

Repository topics show how it works with CycloneDX SBOMs, Package URLs, the National Vulnerability Database and OSS Index to detect known vulnerabilities in components, supporting software composition analysis, DevSecOps and security automation. A Docker Compose quickstart lets you get a local instance running in a few minutes.

Version 5 is the current line, while version 4 is in maintenance mode on the 4.14.x branch and reaches end-of-life in December 2026, with a migration guide provided. The frontend, documentation and Helm charts live in separate repositories, a monthly community meeting is open to users, and the project is written in Java under the Apache-2.0 license.

Somo is a Rust command-line tool for monitoring sockets and ports on Linux and macOS, designed as a friendlier alternative to netstat. Output is shown as an easy-to-read table that can be filtered and sorted, and it can also be produced as JSON or in a custom format. It is released under the MIT license.

The README highlights that a common command such as netstat -tulpn can be replaced by a shorter somo -l. It also allows interactively killing processes that hold a port, which is handy when a development server is stuck. Most of the time it should be run with elevated privileges so it can see all processes and ports.

It installs with cargo from crates.io, and the project notes that the master branch may contain unreleased features, so the crates.io page is the reference for the stable version. Somo suits developers and system administrators who regularly check which processes are listening on which ports.