PostgreSQL, a powerful, enterprise class open source object-relational database system.

Publify, a self hosted web publishing platform running on Ruby on Rails.

Python, a high-level programming language for general-purpose programming.

PyTorch, an open source machine learning library for Python.

Redis, an in-memory data structure store, used as a database, cache and message broker.

Redmine, a free and open-source, web-based project management and issue tracking tool.

Ruby, a dynamic, reflective, object-oriented, general-purpose programming language.

Solidus, an open source fork of Spree, eCommerce application for high volume retailers, built with Ruby on Rails.

Spree Commerce, an open source e-commerce platform based on Ruby on Rails.