Modshield SB by StrongBox IT - Modshield SB is a Web Application Firewall powered by OWASP CRS the protects your web application from OWASP Top 10 vulnerabilities. Only WAF with built-in Load Balancer, DLP, Unlimited Custom Rules, and more.
Uppy.io - Next open source file uploader for web browsers
Lockdown Apps - Free and open source firewall for iPhone
BlackHole File Transfer - Blockchain-based file transfer. Designed for everyday use.
Basefolder - Use your home PC as your own personal cloud storage server.
FilePizza - Open source application used to transfer file via WebRTC and WebTorrent.