Employees frequently work together to create and edit documents.
Socialtext costs about $15 a month per user. Confluence's hosted version goes for as little as $49 a month for 10 users.
The company's work force includes many mobile workers who communicate largely via BlackBerry.
Basecamp costs $24 to $149 a month for an unlimited number of users. Present.ly costs $1 per month per user.
The company develops custom products or services, which require input and feedback from clients.
ConceptShare costs from $24 to $99 a month, depending on the number of projects. GetSignOff offers plans for $29 a month and $59 a month.