The classic email sending library for PHP

Corvusoft's Restbed framework brings asynchronous RESTful functionality to C++11 applications.

wolfSSL (formerly CyaSSL) is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3!

Cross-platform, efficient, customizable, and robust asynchronous HTTP/WebSocket server C++14 library with the right balance between performance and ease of use

TLS Support for SwiftNIO, based on BoringSSL.

Connect to your mattermost or slack using your IRC-client of choice.

A light-weight, modular, message representation and mail delivery framework for Python.

Vert.x based MQTT Broker

HRShell is an HTTPS/HTTP reverse shell built with flask. It is an advanced C2 server with many features & capabilities.

Redli - A humane alternative to the Redis-cli and TLS

The distributed statistical machine translation infrastructure consisting of load balancing, text pre/post-processing and translation services. Written in C++ 11 and utilises multicore CPUs by employing multi-threading, allows for secure SSL/TLS communications.

Non-blocking HTTP library for Ruby

Mosquitto with TLS support for Android

MQTT Objective-C client for iOS / Support TLS/SSL

Automatic support of PROXY PROXYv2 and TLS support on TCP streams

✅ Check the TLS protocol support of one or more web servers

Sending objects between IBMi's with client-server application (with tls-encryption)

A streamlined shard-based P2P networking stack built in Go.

C++ HTTP/REST/Websocket framework based on Nanomsg NG.

SweetSSL is a lightweight easy to use reverse proxy written in Go that provides FREE Let's Encrypt SSL certificates

6.x Elasticsearch Chef Cookbook with TLS/SSL, Kibana, and Cerbro for management, etc.

TLSAudit is a utility for auditing TLS (including SSL and STARTTLS) security settings.

Simple .NET Core crypto library

Gene's SMTP server — receive Internet mail with less fuss

Simple SMTP client with TLS support written in C++

opinionated TLS client & server PKI management tool

Enable TLS 1.1/1.2 Security Protocols as default for WinHTTP

Tiny LDAP server exporting NSS databases using PAM authentication.

Provide ssl for xmlrpc servers