Google Titan - A 2FA device to protect yourself from hackers
Instant 2FA - Add two-factor auth to any site in minutes
Base API - API for authentication, email sending, images and more!
TwoBlocks - A 2FA provider on BlockStack
Keepsafe VPN - Protect privacy on WiFi hotspots & sites around the world
Jaxx - Jaxx.io is a blockchain wallet available as desktop software, a mobile app, or as a Chrome extension