Google Titan - A 2FA device to protect yourself from hackers
TwoBlocks - A 2FA provider on BlockStack
Hydro Mobile App - Free, instant, scalable, blockchain-based 2FA security
Keepsafe VPN - Protect privacy on WiFi hotspots & sites around the world
Castle - The easiest way to protect your users from getting hacked
Base API - API for authentication, email sending, images and more!