Semgrep is a fast, open-source static analysis engine that searches code, finds bugs, and enforces secure guardrails and coding standards. Rules look like the code you already write, with no heavy ASTs, regex wrestling, or painful DSLs. Semgrep Code supports 30+ languages, while Semgrep Supply Chain covers 12 languages across package managers. It runs locally on your machine or in build environments (by default, code isn’t uploaded). The ecosystem includes Semgrep Community Edition, Semgrep Code Pro rules/engine for enterprise-grade checks, and the Semgrep AppSec Platform to orchestrate SAST, SCA, and Secrets scanning at scale. AppSec adds cross-file and cross-function analysis and data-flow reachability to improve precision. Semgrep Assistant provides AI-powered triage and remediation guidance. You can enforce customizable policies and surface findings where developers work—IDE integrations, PR comments, or CI checks. With 20,000+ rules available, Semgrep covers a broad range of security and quality checks. Privacy-conscious defaults and easy CLI/extension usage make it practical for local and CI workflows.