PKI, Crypto & Quantum

PKI, certificate management, cryptography, and post-quantum readiness.

7 vendors; newest added 2026-08-08. Ordered by name. No paid placement.

Atsign

Founded 2019

Seed

Networking technology that removes open listening ports so devices cannot be scanned or directly attacked.

Public

Certificate authority and digital trust platform for managing PKI, backed by eMudhra.

Founded 2023

Venture

Quantum-resistant network traffic security architecture aimed at critical infrastructure.

Founded 2001

PE-backed

PKI and certificate lifecycle management for machine identities across devices and workloads.

Founded 2016

Series A

Certificate-based device identity platform enforcing that only trusted hardware reaches company resources.

Founded 1893

Public

French technology group providing data encryption, hardware security modules, key management, and application security.

Founded 2004

Bootstrapped

Lightweight TLS and cryptography libraries for embedded systems, with FIPS 140-3 validation.