Recommender Systems (open-source)

This list contains most of the non-SaaS recommender systems that are open-source.

Cross-Browser Testing Tools

List of tools that help you test sites, blogs and web applications across different browsers and their versions.

URL Shorteners

A list of public URL shortening services. Shorten long URLs and see key metrics about your shared links.

Antivirus (software)

List of all anti-virus and security software.

Free Stock Photos

List of free stock photographs sites.

Action Games