Google Chrome (free web browser)
A web browser to replace Microsoft Internet Explorer, Apple Safari, or Mozilla Firefox. Provides bookmark, password, extension and tab syncing across systems, is very fast and standards compliant, has built-in Flash and PDF readers, silent auto-updates, has lots of new technology and is pushing forward the boundaries of web browsing while staying more secure than the competition. I use this application more than anything else installed on my systems. Based on the open source Chromium.
Flashblock equivalent: in Settings, click 'Show Advanced Settings', under Privacy, click 'Content Settings', scroll down to Plug-ins and select 'Click to play'
I have often benefited from recommendations for Things I Didn't Know I Wanted.
Given that Less Wrong is a community of unusually intelligent, critical, and self-improvement-focused people, I suspect we can generate a pretty helpful thread of product recommendations — perhaps even a monthly thread of product recommendations.
Rules: