HiTask, as the name implies, is a web based task management solution that comes with a lot of group collaboration tools. It's quite inexpensive starting at $29/mo for five users. HiTask doesn't offer advanced document or project management tools, but it comes with file sharing capabilities, time tracking, calendars, email-to-task and other standard task management tools. There is no information about a self-hosted version of HiTask, so most likely there is no way to deploy it on-premise or customize. If you are looking for a free HiTask alternative, the one that comes with powerful project and client management capabilities, including CRM, quotes and invoices, available both in cloud and as self-hosted software with source code, consider Bitrix24. * Please note that the information may have changed since the publication. For current prices and features please visit Bitrix24 pricing page.