Basecamp - web-based project-management tool

Google Docs

Surveymonkey - Create and publish online surveys in minutes, and view results graphically in real time

Screenflow - Screen recording and editing software for Mac

Dropbox - A free service that lets you bring your photos, docs, and videos anywhere and share them easily

Skype - A freemium voice over IP service and instant messaging client

Visual Website Optimizer - A/B Testing Software for Marketers

Michael Twardowski