Roundup Issue Tracker
Simple-to-use and -install issue tracking system with command-line, web, REST, XML-RPC, and e-mail interfaces. Designed with flexibility in mind - not just another bug tracker. (Source Code) MIT/ZPL-2.0 Python/Docker
Dead-simple application to securely communicate passwords (or text) over the web. Passwords automatically expire after a certain number of views and/or time has passed. (Source Code) Apache-2.0 Docker/K8S/Ruby