mime-detection

Deterministic file observation for pipelines — one read-only pass over a directory emits a reproducible JSON manifest of every file's type, metadata, structure, and provenance.

Fast Rust library and CLI tool for file type identification and detection using extensions, content analysis, and shebang parsing

SmartFileKit is a lightweight, high-performance, and secure file validation, classification, and detection library for .NET with zero external dependencies

Media Capture Proxy - A safe and easy-to-use media capture tool that filters and saves web images, videos, and files using mitmproxy. Includes a full GUI, smart MIME detection, portable browser launcher, and security-focused defaults.

Multi-language file handling library (TypeScript, Python, Rust, Go) — unified interface for local filesystem, S3, URLs, and FormData with stream-first design, lazy byte loading, and intelligent type detection.

Fail-closed file-upload validation for Laravel. Blocks polyglot web shells, malicious PDFs/SVGs, zip bombs, Office macros, and spoofed MIME types via structural parsing — not just regex.