What Web apps increase your productivity?
thorax: AssemblaGoogle (if that counts)Featurelist.org (our own site) -- specifically the user feedback widgets that dump all the feedback from all of our different sites into a handy place (per-project) so I can respond/escalate/investigate/etc.Google Apps / GMailDefensio (for avoiding having to manually inspect spam comments on our apps)__ These aren't in the "can't live without category", but still quite helpful:Feedback Army (for quick usability/sanity checking)PaypalJing (both a tool and a web service)Amazon S3/EC2 (once you get over the initial hurdles, it pays back in productivity)Authsmtp (is that a web app?)StackOverflowbug.gd (another of our sites, in the process of renaming to ErrorHelp.com) -- since I log every error/solution I ever run into, often I run into my own errors again later and the solution is waiting for me even if I don't remember how I solved it before. Often enough someone else solved an error I had, too.