Description: PostgreSQL is an open source, object-relational database management system known for its reliability, performance, and SQL compliance. It runs on all major operating systems and has a rich set of features including complex queries, foreign keys, triggers, views, and ACID compliance.
Type: software
Pricing: Free
Description: Sinatra is a light-weight, open source web application library and domain-specific language written in Ruby. It allows developers to quickly create web applications and APIs with minimal effort.
Type: software
Pricing: Open Source