Hive is an all-in-one productivity and project management platform founded in San Francisco in 2014, supporting 5 views including Kanban and Gantt with 1000+ integrations. Built-in email and instant messaging, plus Action Cards and AI assistance, boost team collaboration.
HiTask is a veteran task and project management tool developed by a US team, combining projects, tasks, a shared calendar, and time tracking on a single-screen dashboard. The free plan gets you started, with email task creation and mobile sync included.
Celoxis is an enterprise project management (PPM) suite offering every feature module at about $25/user/month with SaaS and on-premise deployment options, covering 10+ project lifecycle modules as a high-value choice.
Redmine is an open-source project management and issue tracking tool created by Jean-Philippe Lang in 2006, built with Ruby on Rails under GPLv2, supporting multiple projects, Gantt charts, time tracking, and 1000+ plugins, and completely free to self-host.