"rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Yandex Files

Set up a personal VPN in the cloud

Spacedrive is an open source cross-platform file explorer, powered by a virtual distributed filesystem written in Rust.

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

TLS/SSL and crypto library

Scripts to build your own IPsec VPN server, with IPsec/L2TP, Cisco IPsec and IKEv2

An open source cybersecurity protocol for syncing decentralized graph data.

A cross-platform programmable network tool. 一个跨平台可编程网络工具.

Set up your own OpenVPN server on Debian, Ubuntu, Fedora, CentOS or Arch Linux.

Multi-platform transparent client-side encryption of your files in the cloud

Deduplicating archiver with compression and authenticated encryption.

Store securely encrypted backups in the cloud!

A collection of small bash scripts for heavy terminal users

Berty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network

A free, secure and open source app for Android to manage your 2-step verification tokens.

📬 Easily and securely share files from the command line. A fully featured Firefox Send client.

Reverse engineering WhatsApp Web.

Docker image to run an IPsec VPN server, with IPsec/L2TP, Cisco IPsec and IKEv2

Password protect a static HTML page, decrypted in-browser

Disk encryption with strong security based on TrueCrypt