#1API testing, fuzzing, schema validation, authentication testing, and gateway security tools.
Kitploit recommended

Zero-trust networking platform that makes services invisible with cryptographic identity, policy-based access, and end-to-end encryption. Replaces…
The Secure CommsOS™ for mission-critical operations

Automatic SQL injection and database takeover tool

XML Security Library

Open Source Identity and Access Management For Modern Applications and Services

A fast, simple, recursive content discovery tool written in Rust.

The Symfony PHP framework

A lightweight caching proxy for package registries.

Hunt every Endpoint in your code, expose Shadow APIs, map the Attack Surface.

Open-source vulnerability scanner with automated network discovery, CVE-based detection, CVSS scoring, risk dashboards, remote agents via gRPC, and a…

Open-source AI agent firewall that scans HTTP, MCP, A2A, and WebSocket traffic for exfiltration, SSRF, and prompt injection, emitting verifiable…

OPNsense GUI, API and systems backend

Declarative policy engine that enables authorization and policy enforcement across services, Kubernetes, Terraform, Docker, and APIs using the Rego…

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

Open-source API security platform for continuous API discovery, vulnerability testing, and runtime threat detection. Integrates with CI/CD pipelines…

TrustedRouter.com repo for secure LLM proxying

A Claude Code skill bundle for bug hunting and external red-team work - 82 skills, 15 slash commands, 681 disclosed-report patterns curated across 24…

Automated Penetration Testing Framework - Open-Source Vulnerability Scanner - Vulnerability Management