The Knowledge

Drupal Free to download. Extensive dev work required to implement.

Drupal is an open-source CMS framework which is highly extensible through its API and module driven architecture. A standard Drupal implementation with minimal custom development would likely take 6-8 weeks of development work and cost around the $30,000 - $50,000 mark.

Get Satisfaction Starts at $1200 / mo

Get Satisfaction is a community platform focused primarily on customer support, allowing customers to ask questions and receive help from both others and the organisation. Get Satisfaction would be suitable for medium to large organisations looking for a customer support/innovation platform.

Standing On Giants SaaS pricing depends on implementation, but starts at around $40,000 / yr

Standing On Giants is the newest of the enterprise platforms, entering the market in 2014. SOG integrates seamlessly with other software solutions, resulting in a fully self-contained SSO community solution. With very few live implementations the product is a difficult one to evaluate, but it would be an option worth considering for organisations that require an enterprise solution but don't have a huge budget.

Socious Starts at $999 / mo

Socious is online customer community software that utilises online groups for specific customers or members, discussion forums and blogs. Socious focuses on collaboration and visibility through file and document sharing. With a modern UI, Socious is a good option for large organisations.

Higher Logic Starts at $750 / mo

Higher Logic is a cloud based enterprise platform that offers heavy integrations with other business systems, and is extensible using modules. Of particular note is Higher Logic's built in automation features, allowing you to segment and target members with email campaigns.