Socket

Socket is a developer-first supply chain security platform founded in 2021 by prolific open-source maintainer Feross Aboukhadijeh. Instead of matching dependencies against known CVE databases, it analyzes what packages actually do: network calls from install scripts, filesystem access, obfuscated payloads, typosquatting, maintainer-takeover signals, and 70+ other risk indicators across npm, PyPI, Go, Maven, Cargo, and more. It surfaces findings as PR comments through a GitHub App, plus a CLI, IDE extensions, an MCP server for AI coding assistants, and SBOM export. Pricing runs from a free tier to Team at $20/month and Business at $40/month, with free upgrades for open-source projects.

The honest picture: behavioral analysis trades some precision for earliness — expect false positives you will need to triage, especially on packages that legitimately use install scripts or native code. The deepest capabilities, like reachability analysis and enterprise controls, are paywalled. And while coverage spans many ecosystems, the product's center of gravity remains JavaScript and Python, where supply-chain attacks concentrate.

Install the Socket GitHub App on your organization, or run npm install -g @socketsecurity/cli and scan with socket scan.