Security Tools

Cap provides a self-hosted, open source alternative to CAPTCHA challenges for websites.

Online Tools offers browser-based utilities for hashing, encoding, encryption, formatting, compression, file processing, and more.

This GitHub list collects books, guidelines, blogs, videos, tools, and cases related to CI/CD security.

Sentora provides non-custodial DeFi vaults, real-time analytics, and risk management for capital deployment across decentralized finance.

Agentic Radar scans agent workflows for security issues and helps developers review potential risks.

Configure network activity rules through Windows Filtering Platform with Simplewall.

Let’s Encrypt is a nonprofit that provides automated TLS certificates for securing websites with HTTPS.

OpenCVE tracks vulnerabilities, vendors, products, and weaknesses through searchable security records.

Kali NetHunter App Store provides an installable catalog of applications for the Kali NetHunter platform.

Set network rules by application or globally with Fort Firewall for Windows.

BlackVault protects AI API credentials with rate limits, budget caps, model restrictions, and an emergency kill switch.

Binary Ninja supports software reverse engineering and can be tried in a browser or installed as a desktop application.

acme.sh automates SSL and TLS certificate management using a Unix shell script ACME client.

Analyze and reverse engineer software with radare2, a Unix-like framework and command-line toolkit.

This HTML sanitizer tool converts text with special characters into HTML-safe output.

Big Number Calculator evaluates very large mathematical expressions in a web browser.

Scribble instruments Solidity code for runtime verification and property-based testing.

VERNAM encrypts files in the browser; its project says processing happens client-side and files are not uploaded.

Kismet monitors and captures Wi-Fi network traffic, with wireless intrusion detection and wardriving features.

This RSA calculator supports prime generation, encryption, and decryption.

Threat Radar displays current cyber threat intelligence on a live map, showing security activity from its data sources.

Test how trackers and fingerprinting systems see your browser with Cover Your Tracks from the EFF.

Analyze a website with Web Check, an all-in-one tool described as an OSINT utility.

mess with dns provides an interface for viewing and editing DNS records.