Digital Signature and Timestamping Software
For more than 20 years we have developed professional software for digital signatures, digital certificates, and timestamping. Our products let organizations sign, seal, and time-stamp documents in compliance with international standards installed on premise, under your own control, with lifetime licenses and no per-signature or subscription fees.
PDF Signer
PDF Signer is our application for signing PDF documents with X.509 digital certificates. Sign a single file or bulk-sign thousands at once by selecting an input and output directory, ideal for high-volume corporate PDF signing instead of handling each document individually. Signatures can embed RFC 3161 timestamps to produce PAdES, long-term-valid (LTV) documents.
- Bulk signing of entire folders of PDF documents
- Works with smart cards, USB tokens and eIDAS qualified certificates (QSCD)
- Embedded RFC 3161 timestamping;
- PAdES-LTV with Long-Term Validation
- Configurable signature appearance, document certification and PKI-neutral interoperability
Time Stamp Server
Time Stamp Server is a self-hosted, RFC 3161 compliant Time Stamping Authority (TSA) that runs as an IIS application on your own Windows server. Issue trusted timestamps for digital signatures, code signing and PDF documents with no dedicated appliance and no per-timestamp fees. Timestamping provides long-term proof of when data existed, which is essential for the validity of digital signatures, copyright and IP protection, and notarization.
- RFC 3161 and RFC 5816 compliant
- Works with Adobe Acrobat and PDF Signer
- Code signing for Microsoft Authenticode and Java (JarSigner)
- HSM support through PKCS#11, MS-CAPI and CNG; up to 100 timestamps per second
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We provide eIDAS Qualified Timestamps issued by a Qualified Trust Service Provider (QTSP) listed in the European Union Trusted Lists (EUTL) under the eIDAS Regulation. If you need eIDAS Qualified Timestamps with full legal effect across the EU, visit our dedicated website (https://qtsa.eu).
Signature Software
Beyond PDF, we offer a complete range of tools for X.509 certificate-based digital signatures across multiple document types — including XML (XAdES), DOCX and P7S (CAdES) — all with bulk signing for high-volume corporate workflows.
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Digital Certificates
Digital certificates are the foundation of any Public Key Infrastructure (PKI): electronic credentials issued by a Certification Authority (CA) and bound to a public/private key pair. Our solutions issue X.509 certificates that contain the key pair and the identity of the owner, delivered in the password-protected PFX file format and ready to use for signing and authentication.