Semgrep

Semgrep is a fast, open source static analysis engine. Its defining idea is that rules look like the source code you already write, so a pattern such as the buggy snippet you want to ban matches without wrestling with abstract syntax trees or regex. It runs in an IDE, as a pre-commit check, or in CI/CD.

Semgrep supports more than 30 languages and analyzes code locally by default, so source is never uploaded. The open source Community Edition reasons within a single function or file, which is enough to enforce coding standards and catch many bugs.

For deeper security work, Semgrep Inc offers the AppSec Platform, which adds cross-file and cross-function analysis, data-flow reachability, AI-assisted triage, and policy controls. The CLI installs through Homebrew, pipx, uv, or Docker.