* http://www.rackspace.com/apps/email_hosting/ (IMAP/webmail)

* http://www.snapengage.com (sales/support chats)

* http://www.zendesk.com (basic KB & support tickets)

* http://www.github.com & http://www.springloops.com (public & private repositories)

* http://www.geckoboard.com (dashboard of financial state of the company)

And I'm a power user of my own SaaS products:

* http://www.w3counter.com (realtime visitor analytics)

* http://www.w3roi.com (ad performance tracking)

* http://www.dialshield.com (automatically calls high fraud risk customers during the checkout process on my ecommerce sites)

Only going to mention things that other have not mentioned.

http://Elance.com - Remote contractors. Hourly or job based

http://oDesk.com - Virtual Admins

http://Freshbooks.com - Automation of invoicing. My average days to pay are about 9. A bill I am very happy to pay each month. I use chronomate as the time tracking portion.

http://adroll.com - advertising retargetting

http://join.me - free screen sharing better than go-to-meeting

http://highrisehq.com - CRM

Services I use for consulting assignments: basecamp (file sharing), harvest (time tracking), go-to-meeting (screen sharing), skype (phone calls), gmail (e-mails), hellofax (faxing paperwork that involve my signature)

Services I use on my own projects: url2png (thumbnail generation of web pages), pusher (real-time data push of server stats to a web page), google analytics (visitor stats)

My own SAAS projects: mindcast (corkboard for mashing up 3rd-party saas windows and notes), shadowcatcher (screen capture and screenshot sharing utility)

what and where can I find "mindcast"?

http://beta.mindcast.com (The 1-minute intro video is a bit old and needs to be updated, but you should get the general idea...)

Last startup:

  zendesk (customer support),
  github (private repo),
  campfire (team communication),
  google apps (email, docs),
  odesk (extra hands),
  highrise (potential-investor relations),
  clicky (real time web analytics),
  dropbox (file sharing),
  wordy (proof-reading),
  mygengo (translations),
  new relic (monitor rails apps),
  zerigo (dns),
  sendgrid (sending mails),
  hoptoad (app logging),
  transloadit (image uploading, processing),
  heroku (app hosting)

Edit: learned HN formatting

How does HN formatting work?

At my last startup

GitHub, Pivotal tracker, Basecamp, Campfire, Campaign monitor, Send grid, NewRelic, Litmus

Good question, would love to see others chip in!

Chargify, SnapEngage, SalesForce, Campfire, Pivotal Tracker, GitHub, DropBox, BufferApp

hmmmmmmm

1) github 2) pivotal tracker 3) campfire 4) olark 5) cheddargetter (technically)

Basecamp, Bitbucket, Xero

Mint