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