Sign Server 4.4 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free software was originally developed by Prime Key. The software lies within Development Tools, more precisely IDE.
The following versions: 4.4, 3.4 and 3.2 are the most frequently downloaded ones by the program users. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
It is an application for server side signatures called by other systems. It is flexible and can be customized to specific needs. The SignServer have a ready to use TimeStamp server and signers for PDF, XML, ODF, OOXML and MRTD (ePassport DS).
- Supports RSA key algorithm up to 8192 bits.
- Supports ECDSA key algorithm with named curves.
You may want to check out more software, such as PDF Signer Server, C# Sign PDF or AA Mail Server, which might be similar to Sign Server.