#1Tools for securely encrypting data or decrypting captured ciphertext and analyzing encryption methods.
Kitploit recommended

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…

The Secure CommsOS™ for mission-critical operations

Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS

General purpose TLS and crypto library

Free universal database tool and SQL client

A tool for secrets management, encryption as a service, and privileged access management

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

Unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs

The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

bluetooth mesh chat, IRC vibes

Certbot is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTPS on your server. It can also act as a client for any…

Awesome Privacy - A curated list of services and alternatives that respect your privacy because PRIVACY MATTERS.

eBPF-based Networking, Security, and Observability

World's fastest and most advanced password recovery utility

Fast, secure, efficient backup program

Secure offline storage of credentials with encrypted vaults, password generator, TOTP, YubiKey/OnlyKey support, browser integration, and CLI.

FreeRDP is a free remote desktop protocol library and clients

Set up your own OpenVPN server on Debian, Ubuntu, Fedora, CentOS, Arch Linux and more