Apps Related to Digital Signatures

GPGMail is a robust extension for Apple Mail, seamlessly integrating OpenPGP encryption and digital signatures directly into your email workflow for enhanced privacy and security.

GPGTools is a comprehensive suite of open-source software for macOS that empowers users with the ability to encrypt, decrypt, sign, and verify emails and files using the OpenPGP standard. It seamlessly integrates with Apple Mail and provides a secure gateway for sensitive communications and data handling.

Mailfence is a secure, privacy-focused email service that provides end-to-end encryption and digital signatures using OpenPGP. It also includes a fully integrated suite of office tools like Calendar, Documents, and Contacts, all protected by strong security features.

Foxit PhantomPDF is a comprehensive PDF editing software that empowers users to create, edit, convert, secure, and sign PDF documents with professional-grade tools.

PDF-XChange Editor is a powerful, free PDF editor and viewer for Windows. It offers a wide range of tools for creating, editing, annotating, and managing PDF documents, including OCR, form creation, and advanced security features. Despite its extensive capabilities, it remains lightweight and efficient.

GNU Privacy Guard (GnuPG or GPG) is a free and open-source implementation of the OpenPGP standard, widely used for encrypting and signing data and communications. It provides a robust suite of command-line and graphical tools to protect sensitive information.

Preview is the native image and PDF viewer for macOS. It offers essential tools for viewing, annotating, and basic editing of these file types directly within the Apple ecosystem. Designed for efficiency and low resource use, Preview provides a seamless and integrated experience for handling common document and image formats on Mac computers.

PDFCreator is a powerful yet user-friendly application that functions as a virtual printer, allowing you to convert any printable document into a PDF and various other file formats. It simplifies the process of creating professional-looking PDFs with options for security and automation.