PortableSigner is described as 'Signing (with X.509 certificates) program for PDF files. It's platform independent and runs (tested) under Windows (2000, XP, ...), Linux, and macOS' and is an app in the office & productivity category. There are more than 25 alternatives to PortableSigner for a variety of platforms, including Windows, Web-based, Mac, Linux and Android apps. The best PortableSigner alternative is Adobe Acrobat DC. It's not free, so if you're looking for a free alternative, you could try PDFTK Builder or KDAN PDF. Other great apps like PortableSigner are Qoppa PDF Studio, Nitro PDF , LibreSign and DottedSign.
Manage documents effortlessly, edit PDFs, create them from other formats, and e-sign anywhere. Secure sharing and comparison tools ensure smooth workflows and data protection. New AI Assistant offers quick document insights. Perfect for desktop and web platforms.
Adobe Acrobat DC is the most popular Web-based, Windows & Mac alternative to PortableSigner.
Adobe Acrobat DC is the most popular commercial alternative to PortableSigner.
Create, Convert, Review and Edit PDF Documents on Windows, macOS, and Linux.
Qoppa PDF Studio is the most popular Linux alternative to PortableSigner.
PDFTK Builder is a free graphical interface to for PDFtk, making it much easier to use. It is a easy to use tool to collate (merge), split, encrypt, decrypt, stamp and rotate (only 90°, 180° or 270°) pdf documents.
PDFTK Builder is the most popular Open Source & free alternative to PortableSigner.
Nitro offers comprehensive PDF solutions for editing, creating, and converting, alongside OCR and e-signature tools. Supports Mac, Windows, and iOS, providing a user-friendly interface with industry-standard security features. Ideal as an Adobe Acrobat alternative.
Nitro PDF is the most popular iPhone & iPad alternative to PortableSigner.
Comprehensive solution for editing, signing, form filling, OCR scanning, commenting, converting, and redacting PDFs, with AI-driven analysis and content extraction, data export to spreadsheets, text-to-speech, seamless use across desktop and mobile, and batch processing.
KDAN PDF is the most popular Android & Android Tablet alternative to PortableSigner.
LibreSign is a web application for electronic signatures (e-Sign) that offer the possibility of signing documents online with security and agility.
LibreSign is the most popular SaaS & Self-Hosted alternative to PortableSigner.
DottedSign is the most comprehensive and easy-to-adopt e-signature solution, offering businesses enterprise-level security standards, equipping them for mobile-first hybrid work environment.
Adobe software for filling and signing forms digitally covers it all. Snap paper forms with a phone's camera, add details, sign with a stylus or finger, and then send via email. It’s all about speed, ease, and going green with paperless workflows.
Digitally sign and manage documents using legally-binding electronic signatures, unlimited e-signing, PDF creation, annotation, team collaboration, advanced encryption, audit trails, secure archiving, offline access, multi-party signing, and cloud integration.
Ashampoo PDF Pro 3 is a software solution for managing and editing PDF documents. It offers tools for creating, converting, editing, merging, and securing PDFs. The software allows users to create optimally sized documents for any device and offers encryption to protect...
jPDF Tweak is a Swiss Army Knife GUI application for PDF documents: combine, split, rotate, reorder (n-up, booklet), watermark, edit bookmarks/fileinfo/pagetransition, compress, encrypt, decrypt, sign, repair, edit attachments and more.
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