D-Trust GmbH vs DigiCert Open Source: Side-by-Side Comparison (2026)

D-Trust GmbH: German qualified trust service provider offering digital certs, e-signatures & eIDs. built by D-Trust GmbH. Core capabilities include Qualified electronic signatures via signature cards (eIDAS-compliant), TLS/SSL certificate issuance for website trust and authentication, Electronic professional ID cards (eHBA) for healthcare professionals..

DigiCert Open Source: Open-source PKI tools for IoT crypto, domain validation, and cert linting. built by DigiCert. Core capabilities include TrustCore SDK: FIPS-compliant cryptographic library for IoT and embedded devices, TrustCore SDK: Secure communications and trusted device identity for constrained environments, DCV Library: Open-source domain control validation covering all non-ACME DV methods (email, DNS, HTTP/HTTPS)..

Both serve the Certificate Lifecycle Management market but differ in approach, feature depth, and target audience.

D-Trust GmbH differentiates with Qualified electronic signatures via signature cards (eIDAS-compliant), TLS/SSL certificate issuance for website trust and authentication, Electronic professional ID cards (eHBA) for healthcare professionals. DigiCert Open Source differentiates with TrustCore SDK: FIPS-compliant cryptographic library for IoT and embedded devices, TrustCore SDK: Secure communications and trusted device identity for constrained environments, DCV Library: Open-source domain control validation covering all non-ACME DV methods (email, DNS, HTTP/HTTPS).

D-Trust GmbH is developed by D-Trust GmbH. DigiCert Open Source is developed by DigiCert. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

D-Trust GmbH and DigiCert Open Source serve similar Certificate Lifecycle Management use cases: both are Certificate Lifecycle Management tools, both cover TLS, SSL. Key differences: D-Trust GmbH is Commercial while DigiCert Open Source is Free. Review the feature comparison above to determine which fits your requirements.