Mavenlink is an enterprise-grade project and resource management platform. It's basic version (Mavenlink Teams) starts at $6/user/month and quickly escalates to $49/user/month for Mavenlink Premier. Mavenlink doesn't list prices on its website, so expect a heavy sales push if you sign up for a demo. Overall, it's a good system, but it's not without limitations. For example, Mavenlink has invoicing but no client management. Likewise, there's no document management - only file sharing. Mavenlink's activity stream cannot be used as company social network or intranet. And while it has a mobile website, native apps for neither iOS nor Android devices are available. You cannot host MavenLink on your server or customize it either. If you are looking for a free MavenLink alternative that doesn't have these limitations, consider this side by side comparison with Bitrix24.
* Please note that the information may have changed since the publication. For current prices and features please visit Bitrix24 pricing page.