We are a web based company and our mix includes: zendesk, get satisfaction, github, campaign monitor, new relic.

Also - many small businesses pay for ours -http://www.pipejump.com (:

GitHub

Basecamp, Dropbox, Highrise, Campaign Monitor, Xero, probably a few more.

(That's my company, not me personally, personally I don't have any paid apps. I've no problem with doing so, just never needed any)

For my tech work: Basecamp, Beanstalk, and Ballpark.

For my music work: Soundcloud and ArtistData.

Netflix, Flickr, GitHub

Netflix and flickr. Maybe Pandora soon.

flickr, freshbooks and github

flickr. that's about it.

github and p2h (last one is more a service than an app).

Zoho & Pandora

github and toggl

Fastmail

Flickr