
bitcoin
Full-node Bitcoin client that validates transactions and blocks on the peer-to-peer network, with integrated wallet, cryptographic security, and…

Full-node Bitcoin client that validates transactions and blocks on the peer-to-peer network, with integrated wallet, cryptographic security, and…

Set up your own IPsec VPN server in just a few minutes, with IPsec/L2TP, Cisco IPsec and IKEv2. Supports Ubuntu, Debian, CentOS/RHEL, Alpine Linux…

A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools and more.

Linux kernel source tree

A fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet.

General purpose TLS and crypto library

Linux operating system for embedded devices with writable filesystem, package management, and build framework. Enables custom firmware creation for…

High-performance network discovery and security auditing tool with advanced port scanning, OS detection, service version detection, and scriptable…

Step-by-step guide for hardening a Linux server, covering SSH security, firewalls, intrusion detection, auditing, and system configuration to reduce…

Curated macOS security and privacy guide with practical instructions for threat modeling, disk encryption, firewall configuration, secure…

A black hole for Internet advertisements

The easiest, most secure way to use WireGuard and 2FA.

JumpServer is an open-source Privileged Access Management (PAM) platform that provides DevOps and IT teams with on-demand and secure access to SSH,…

bluetooth mesh chat, IRC vibes

An open source, self-hosted implementation of the Tailscale control server

Network-wide ads & trackers blocking DNS server

A platform for building proxies to bypass network restrictions.

Fast YAML-based vulnerability scanner with template-driven detection engine for automated security testing across web apps, APIs, networks, DNS, and…