Manage a plain-text to-do list from the command line.
Free and open source (GPL-3.0 licence per GitHub).

Notes, tasks & docs
Organise tasks into lists and projects with reminders and recurring tasks.
Organise tasks into lists and projects with reminders and recurring tasks.
Self-hosted task and project management suite with deadlines, subtasks, and cross-platform access avoiding Things 3 and Any.do subscription fees. Free open-source task and sprint tracker alternative to Linear Enterprise. Vikunja offers lightweight kanban boards, list views, Gantt timelines, and team task assignment. Self-hosted and fast without per-user cloud fees, focusing on team task velocity rather than proprietary keyboard-driven workflows. Free open-source agile task management alternative to Jira Enterprise. Vikunja provides relations, subtasks, kanban workflows, and CalDAV synchronization without enterprise cloud lock-in or heavy memory consumption. Runs easily on low-resource VPS nodes.
Managed Cloud is a paid service with a 14-day trial, not the qualifying route. Own hosting, TLS, maintenance and backups required. Pro admin/audit/time-tracking features are paid extras; mobile experience differs.
Each comparison covers the workflow described above, rather than every paid feature.