Description: MathJax is an open source JavaScript display engine for mathematics that works in all browsers. It allows you to include math equations and formulas on your website that will render beautifully cross-browser.
Type: software
Pricing: Open Source
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