Trexo PDF Signer is a professional-grade, open-source application designed for creating legally binding digital signatures on PDF documents. Built with enterprise security standards in mind, it provides seamless integration with hardware security modules (HSM), software certificates, and native platform keystores.

Features

  • Sign PDFs with digital certificates (PFX/P12, JKS, Windows/macOS keystores)
  • LTV (Long Term Validation) enabled signatures
  • PKCS#11 support for USB tokens and smart cards
  • Cross-platform: Windows (x64/x86), Linux (x64/x86), macOS (x64)
  • Document signer
  • Green Trick
  • Timestamp server support (RFC 3161)
  • Cross-platform: Windows (x64/x86), Linux (x64/x86), macOS (x64)
  • Crypto
  • e-signautre on documents

Project Samples

Main Window PDF Viewer Signature panel Signature Appearance Signature Properties

Project Activity

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Categories

Cryptography, Document Management, Digital Signage

License

Affero GNU Public License

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Trexo PDF Signer Web Site

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  • aniketc007 Posted 2026-01-29
    Excellent PDF Digital Signing Tool with Enterprise-Grade Security Trexo PDF Signer is a powerful and well-designed open-source application for PDF digital signing. The software works reliably across Windows, Linux, and macOS, making it a great choice for both individual users and enterprises. What stands out the most is its strong cryptographic support, including PKCS#11 USB tokens, smart cards, PFX/P12 certificates, and native OS keystores. The green tick trusted signature, LTV (Long Term Validation), and RFC 3161 timestamp support ensure that the signed PDFs are legally valid and verifiable long-term. The application is easy to use despite offering advanced features like HSM integration and cross-platform compatibility. It is especially suitable for government, financial, and security-focused use cases. Performance is stable, and signatures are applied accurately without altering document integrity. Overall, Trexo PDF Signer is a professional-grade, secure, and dependable PDF signing solution. Highly recommended for anyone looking for an open-source alternative to expensive proprietary PDF signing tool
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Additional Project Details

Operating Systems

Linux, Mac, Windows

Intended Audience

End Users/Desktop, Financial and Insurance Industry, Government, Other Audience, Security, System Administrators

User Interface

Java Swing

Programming Language

Java

Related Categories

Java Cryptography Software, Java Document Management System, Java Digital Signage Software

Registered

2026-01-19
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