Our Saas, Pixtulate, is currently in beta and bootstrapped. We have optimized for lowest cost possible at the moment and our traffic is still fairly low.

  1. DigitalOcean - $110/month
  2. Google Apps - $5/month
  3. UptimeRobot - Free (just as good as Pingdom)
  4. CloudFlare - Free (serving under 2 TB/month)
  6. Amazon S3 - $1.40/month
  7. MixPanel - Free
  8. HeapAnalytics - Free
  9. Google Analytics - Free
  10. BaseCRM - Free
  11. MailChimp - Free
  12. Mandrill - Free
  13. Tumblr - Free (our blog)
  14. CloudBees - Free (build, maven repos etc)
  15. Desk.com - $3/month
  16. NewRelic - Free (server monitoring)
  17. GoDaddy - $9/year

I am absolutely amazed over how many services we can get free. On one hand, we would either have to invest more into development or do without, on the other, it doesn't bode well for our own likelihood of making money.