
Signal-iOS
Open-source iOS messenger providing end-to-end encrypted text, voice, and video calls via the Signal Protocol, with no analytics or telemetry…

Open-source iOS messenger providing end-to-end encrypted text, voice, and video calls via the Signal Protocol, with no analytics or telemetry…

Community Cryptography Specification Project

Experimental RP2040 FIDO2/WebAuthn authenticator with packed attestation and documented Windows/Entra interoperability

General purpose TLS and crypto library

Enterprise-grade toolkit to audit and migrate legacy infrastructure to hybrid post-quantum cryptography (PQC).

Open source CSPM for Azure - scan for misconfigurations and quantum-unsafe cryptography, map findings to CIS/NIST/ISO27001/SOC2, and fix them with…

Offline nested attack tool that recovers MIFARE Classic authentication keys using known default or user-supplied keys for assessing NFC/RFID card…


An open-source framework for verifiably private AI inference

Infisical is the open-source platform for secrets, certificates, and privileged access management.

Cross-platform client-side encryption for cloud storage with AES-256, encrypted filenames, obfuscated folder structure, and transparent virtual drive…

Ronin is a Free and Open Source Ruby Toolkit for Security Research and Development. Ronin also allows for the rapid development and distribution of…

CKB's vm, based on open source RISC-V ISA

Open-source cybersecurity knowledge base with 400+ notes, labs, and cheat sheets covering offense, defense, cryptography, cloud, and forensics.

Open source smart card tools and middleware. PKCS#11/MiniDriver


Bramble is a hacking Open source suite.

Open-source services framework for building and developing SOAP, RESTful, and CORBA services with support for WS-Security, JAX-WS, and JAX-RS APIs.