Toolsley PGPigeon - Simple but powerful OpenPGP-compatible message encryption webapp.
SKS OpenPGP Key server - The place to publish and search OpenPGP public keys.
DeliverySlip - DeliverySlip helps simplify, secure, and expedite the burdensome elements of online collaboration...
OpenPGP Keyserver - Pool of places to publish and search OpenPGP public keys.
Lockbin - Lockbin is a web application for sending private email messages and files.
MIT PGP Public Key Server - The place to publish and search OpenPGP public keys.