Python + Openssl engines, also a CAPI SSL Context that can be used with urllib3.

Simple RND OpenSSL Engine

A repository that allows you to build and use OpenSSL with Visual Studio

Python packages that help with PKI. Windows capi, openssl-engine support and certificate management such as a simple certificate authority

SSL/TLS offloading with openssl engine on HSM Service

Docker images with OpenSSL and Russian GOST crypto algorithms

An OpenSSL engine that uses SGX as a keystore

A demo OpenSSL 1.0.2 engine provides SM2/SM3/SM4 algorithms.

OpenSSL engine and provider for libica.

OpenSSL engine for PKCS#11.

Linux tools and examples for OPTIGA™ Trust V1/V3 security solution

wolfCrypt and wolfCrypt FIPS engine for OpenSSL

Intel QuickAssist Technology( QAT) OpenSSL Engine (an OpenSSL Plug-In Engine) which provides cryptographic acceleration for both hardware and optimized software using Intel QuickAssist Technology enabled Intel platforms. https://developer.intel.com/quickassist

Scripts to build OpenSSL, HTTP/2 (nghttp2) and cURL (libcurl) for MacOS, iOS and tvOS devices (x86_64, armv7, armv7s, arm64, arm64e). Now Supporting Apple Silicon, OpenSSL 3.0.x with TLS 1.3 and Mac Catalyst builds.