Chatter is an enterprise social network created specifically for Salesforce users. Salesforce was one of the first vendors to understand value of social collaboration for sales and has done largely a good job. There are several drawbacks that limit Chatter usefulness. First, it's of very little value to non-Salesforce users. Second, like other Saleforce services, no self-hosted option is available. Third, at $15/user/mo, Chatter gets expensive quickly. Bitrix24 has a number of advantages over Chatter, starting with a free built-in CRM. Take a look at the feature comparison chart below to see if Bitrix24 is a free Salesforce Chatter alternative that you've been looking for. * Please note that the information may have changed since the publication. For current prices and features please visit Bitrix24 pricing page.