The Best Things in Life Are Free

Adobe Buzzword: collaborative word processor application
CutePDF Writer: PDF creator; free basic service
Dabble DB: create, manage and share online databases; free basic service
Doodle: schedule and coordinate meetings and other appointments
FreshBooks: invoicing, time-tracking and expense service; free basic service
Google Calendar: shareable calendar and schedule organizer
Google Docs: collaborative word processor and spreadsheet applications
OpenOffice.org: open-source office software suite for word processing, spreadsheets and more
Stikkit: organization and reminder system that integrates with productivity applications
SurveyMonkey: create and publish custom online surveys; free basic service
ThinkFree Office: office productivity suite; free basic service
WuFoo: HTML form builder for creating interactive forms; free basic service
Zoho: office, productivity and collaboration applications

Project Management/Collaboration

LogMeIn: remotely support and access digital information; free basic service
ProjectStat.us: project management solution and updates
Project2Manage: collaborative project management solution
Remember the Milk: task management solution and to-do lists
Socialtext: wiki and website collaboration; free basic service
Team Task: collaborative project management and community website builder
Yugma: web meeting and collaboration service

Security

Adeona: open-source laptop tracking and recovery software
BitDefender Online Scanner: virus scanners; free basic service
ZoneAlarm: firewall protection from hackers and threats; free basic service

Web

Google Alerts: e-mail updates based on choice of query or topic
KickApps: platform of applications to integrate social features into a website
Microsoft Office Live Small Business: create a company website, domain and e-mail; free basic service
Synthasite: web hosting and building
Weebly: website and blog creator
Widgetbox: web widgets for various applications
Woopra: web tracking and analysis application; free basic service