Digital Signature & eSigning software. Bulk PDF signing. Sign all Page
ObjectivePGP is an open-source library for iOS and macOS
A high-level OpenPGP library
Sign-In with Ethereum library
Free and open-source PDF signing and verification application.
Digital Signature for PDF documents in Spanish
GMR digital signature system
FIDO strong authentication, encryption, digital signature engine
Java code that enables you to sign documents using a smart card.
Distributed cryptosystem based on Shoup’s threshold signature scheme