What are some alternatives?
ionCube PHP Encoder - ionCube PHP Encoder is a tool to secure and license PHP scripts.
Celery Project - Celery is an asynchronous task queue/job queue based on distributed message passing.
Bootstrap Table - Bootstrap Table has been designed to reduce development time and to require no specific knowledge from developers.
iTerm2 - A terminal emulator for macOS that does amazing things.
StackPile - StackPile is a web-based app that helps you easily integrate third-party software into your existing or new website.
Apache Tika - Apache Tika toolkit detects and extracts metadata and text from different file types.