Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
OpenSSL - OpenSSL is a free and open source software cryptography library that implements both the Secure Sockets Layer (SSL) and the Transport Layer Security (TLS) protocols, which are primarily used to provide secure communications between web browsers and …
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Let's Encrypt - Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.
Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.