Localization
Firefox is the popular open source web browser from Mozilla
Web based social bookmarking lets you share online finds and discover new ones. Ground zero for tagging.
Web based photo sharing service
FreeMind is a premier free mind-mapping software written in Java.
Social networking for non-social purposes with a focus on professional development, networking for jobs and problem solving through the expertise of those in your extended network.
Gmail is a web-based email with very user-friendly interface and huge storage capacity