Vikunja

Vikunja is a self-hostable task and project management application designed for personal productivity and team collaboration. It provides list-based task organization with optional kanban views, sharing, and reminders, and exposes a well-documented API for integrations.

Key Features

• Projects/lists with tasks, subtasks, priorities, due dates, reminders, and repeating tasks
• Kanban board view in addition to traditional list views
• Team collaboration: sharing projects and tasks with permissions
• Labels/tags, filters, and saved views for organizing and querying tasks
• Notifications and activity tracking (implementation depends on configured services)
• CalDAV support for syncing tasks with compatible clients
• REST API for automation and integrations; supports API tokens
• Multi-platform clients: web UI plus mobile apps/community clients

Use Cases

• Personal to-do management with recurring tasks and reminders
• Small-team project tracking with shared lists and kanban workflows
• Integrating tasks into other systems via API (e.g., custom automation/scripts)

Limitations and Considerations

• Some advanced enterprise project features (e.g., complex portfolio management) are out of scope compared to large commercial suites
• CalDAV feature parity depends on client compatibility and configured server settings

Vikunja is a strong fit for users who want a lightweight, modern task manager with collaboration features and a developer-friendly API. It is especially useful when you want control over data and the flexibility to integrate task workflows into existing tooling.