Startup Tools and Resources

Advice on conducting customer interviews
Survey.io – customer development survey (ask customers about your current version)

Pricing theory and advice from Joel Spolsky (a.k.a. Joel on Software)
Ask potential customers face-to-face. Watch their body language.
High-ball strategy: Tell the prospective customer “This’ll cost you £ xxx” (insert amount you’re 99% sure is too high). Watch their response. Ask what they would pay.

BrowserMob – web-based load testing (with free trial)
Browsershots – view your web page in different browsers (free)
Boomerang – measure the performance of your website from your end user’s point of view
IETester – test how your site renders in different versions of Internet Explorer

Slicehost – cheap US hosting if you’re happy installing and maintaining everything yourself
Linode – more of the same, but with UK and US data centres (not used yet, but hear good things)
Bytemark – same but UK-based (not used them either yet, but again, I hear good things)
easyDNS – reliable DNS service