VikunjaOrganise tasks into lists and projects with reminders and recurring tasks.
Free self-hosted unlimited tasks/projects, views, reminders, repeating tasks, labels and sharing.
Notes, tasks & docs
OpenProject
Free softwareOpen sourceLocal
Plan project work with issue tracking, Gantt charts and time tracking.
What you can use it for
Plan project work with issue tracking, Gantt charts and time tracking.
- Covers the core use case of Smartsheet without a subscription.
- 16.4k GitHub stars, GPL-3.0, last commit 2026-10-15
Workflow coverage and comparison notes
Open source project management and bug tracking with agile boards, Gantt charts, and roadmap planning.
Before you switch
Heavier setup; not spreadsheet-first; Enterprise feature matrix differs; inspect licence, exact Community views and deployment cost.
Alternatives to these paid apps
Each comparison covers the workflow described above, rather than every paid feature.
More for the same workflow
See alternatives →Vikunja
FocalboardOrganise tasks and projects on boards hosted on your own server.
Source published on GitHub under a custom/non-standard licence (GitHub shows no standard SPDX id); check terms for commercial use.
TaigaPlan projects with backlogs, sprints and Kanban boards.
100% free open-source (MPL-2.0 backend, AGPL-3.0 frontend) or free cloud tier (up to 3 users).