Freedom251 › Code Signing Software
Signotaur
What Signotaur is
Signotaur is a self-hosted server for centrally managing signing certificates and remotely signing code from build systems. It runs as a Windows service and requires Windows 10 or Windows Server 2016 or later. Server access requires HTTPS and an SSL certificate. Private keys stay on the server; documentation says only a signature digest travels through a secure SSL connection. Certificate sources include PKCS#11 hardware devices such as YubiKey and SafeNet, PFX files, and the Windows Certificate Store. A command-line client supports build scripts and CI/CD workflows, with actions for FinalBuilder and Continua CI. Clients authenticate with API keys instead of password prompts. Supported targets include Windows executables, installers, PowerShell scripts, AppX/MSIX, NuGet, VSIX, ClickOnce and VSTO manifests, RDP files, Apple profiles, CMS/PKCS#7 files, archives, PDFs, and XML documents. Standard costs $199, paid once; Enterprise costs $399, paid once. Both include 12 months of support and updates.
Who it suits
Signotaur suits Windows development teams that need centralized certificates and remote signing in build or CI/CD workflows. It is self-hosted rather than cloud signing.
What it does well
- Private keys remain on the server
- Supports hardware certificate devices
- API-key client authentication
- CI/CD signing support
- Unlimited users and signings
What to know first
- Windows server required
- HTTPS and SSL certificate required
- Cloud signing is unavailable
- Signing requires a license key
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Signotaur Standard Server | Perpetual license; includes 12 months of support and updates, then renewal is 30% of the initial purchase for another 12 months. · Unlimited users · Unlimited certificates · Unlimited signings | $199, paid once |
| Signotaur Enterprise Server | Perpetual license; includes 12 months of support and updates, then renewal is 30% of the initial purchase for another 12 months. · Unlimited users · Unlimited certificates · Unlimited signings · Internal Certificate Authority · ADCS CA support · Document signing coming soon | $399, paid once |
As finalbuilder.com lists them, read 7 Oct 2026. The maker's own page has the final word.
Verdict
Signotaur centralizes certificate management and signing across Windows build workflows while keeping private keys on the server. Its perpetual licenses include a year of support and updates, with a 14-day trial available.
Facts from Signotaur's own pages
- Certificate sources
- Supported certificate sources include PKCS#11 hardware devices such as YubiKey and SafeNet, PFX files, and the Windows Certificate Store. · finalbuilder.com, 7 Oct 2026
- CI integration
- The command-line client is designed for build scripts and CI/CD workflows, and the documentation links Signotaur actions for FinalBuilder and Continua CI. · docs.finalbuilder.com, 7 Oct 2026
- Client authentication
- The product page says the client uses API keys instead of password prompts for signing. · finalbuilder.com, 7 Oct 2026
- Evaluation and licensing
- A 14-day trial license can be requested from the Admin/Licenses page; the server download is operational but signing requires a license key. · finalbuilder.com, 7 Oct 2026
- Founded
- 1997 · finalbuilder.com, 28 Sept 2026
- Headquarters
- Canberra, Australia · finalbuilder.com, 28 Sept 2026
- HTTPS
- Signotaur requires HTTPS and an SSL certificate for secure server access. · docs.finalbuilder.com, 7 Oct 2026
- Maker
- VSoft Technologies Pty Ltd says it was founded in 1997, specializes in developer tools focused on automation, and is based in Canberra, Australia. · finalbuilder.com, 7 Oct 2026
- Private keys
- Private keys remain on the server and are not transmitted; the documentation says only the signature digest is sent over a secure SSL connection. · docs.finalbuilder.com, 7 Oct 2026
- Purpose
- Signotaur is a self-hosted server for centralized management of signing certificates and remote code signing integrated with CI systems. · finalbuilder.com, 7 Oct 2026
- Refund
- The pricing FAQ offers a 100% refund of the purchase price within 60 days of purchase if the customer is unhappy with Signotaur. · finalbuilder.com, 7 Oct 2026
- Server platform
- The installation guide requires Windows 10 or Windows Server 2016 or later, and says the server runs as a Windows service. · docs.finalbuilder.com, 7 Oct 2026
- Signing formats
- The product page lists support for ClickOnce, VSTO, NuGet packages, VSIX, CMS/PKCS#7 files, and RDP files. · finalbuilder.com, 7 Oct 2026
- Support and updates
- Each purchase includes 12 months of support and updates, after which the perpetual license continues to work for builds released before the subscription expired. · finalbuilder.com, 7 Oct 2026
Where Signotaur stands on Freedom251
- Code Signing Software#17 of 28