- github (pay version)

- google apps for business (email, xmpp)

- campfire (team chat) with propane.app

- AWS (lots)

- pivotal tracker

- concept share (i dont use it much, but a few others at work do)

- sendgrid

- digicert (CA)

- dnsmadeeasy (dns)

looking at possibly using:

- new relic

- airbrake (used to be hoptoad)