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Celoxis publishes buyer-guide SEO two or three times a day and product news almost never.
A side-by-side editorial comparison of GanttProject and Tability — release velocity, themes, recent moves, and the top alternatives to consider.
A desktop Gantt tool on a multi-year cadence, tethering itself to its own cloud
GanttProject is a desktop project scheduling application released every one to three years, with occasional build-only tags in between. The most recent feature update, 3.3, added calculated columns driven by SQL expressions in the task table, project-relative week numbers, and a native Apple Silicon package. The intervening tags are packaging work rather than product: restoring Linux and Windows builds, and producing both Intel and Silicon macOS packages.
Tability is building the org graph its AI agents will need to act on.
Tability is an OKR and strategy platform that has spent 2026 turning a plan hierarchy into a queryable graph. The Strategy Map now organises by people as well as plans, the Dependencies Map traverses up to parent context and down through downstream work from any object, and a workspace-wide filtering layer with saved segments sits over goals and initiatives. Running alongside is an agent track: an AI Importer that reads OKR and KPI spreadsheets into reviewable proposals, and AI managers that can be assigned to a goal and must route decisions back through an approval flow.
GanttProject is a desktop project scheduling application released every one to three years, with occasional build-only tags in between. The most recent feature update, 3.3, added calculated columns driven by SQL expressions in the task table, project-relative week numbers, and a native Apple Silicon package. The intervening tags are packaging work rather than product: restoring Linux and Windows builds, and producing both Intel and Silicon macOS packages.
The through-line since 3.0 is a desktop application acquiring a service tail. GanttProject Cloud arrived in 3.0 alongside a bundled Java runtime and an update channel, 3.1 added a connection toggle and pulled a shared human-resource database from the cloud, and 3.2 rewrote the task table with filtering and non-destructive sorting. By 3.3 the table is programmable through SQL expressions. Each release deepens either the cloud tie or the table, which are the two places a desktop planner can still differentiate — but the cadence means any given year may show only a packaging fix.
Expect the next feature release to extend calculated columns or the cloud collaboration surface; on this cadence it is unlikely to arrive quickly, and the entries give no indication of timing.
Tability is an OKR and strategy platform that has spent 2026 turning a plan hierarchy into a queryable graph. The Strategy Map now organises by people as well as plans, the Dependencies Map traverses up to parent context and down through downstream work from any object, and a workspace-wide filtering layer with saved segments sits over goals and initiatives. Running alongside is an agent track: an AI Importer that reads OKR and KPI spreadsheets into reviewable proposals, and AI managers that can be assigned to a goal and must route decisions back through an approval flow.
The two tracks are converging, and the sequencing tells the story. Delegating goals to AI agents shipped first; the releases since have been building the structure those agents need to reason over — who reports to whom, what depends on what, which slice of a busy workspace a question is actually about. Overflow controls on large maps and a refreshed Initiatives view point at customers with enough plans and people for readability to become the constraint, which is a different buyer than the small-team OKR tool this category started as. Import friction is being attacked from the same direction: an AI-assisted path out of spreadsheets, with review gates before anything is created.
Expect the agent features to start consuming the graph the recent releases exposed — dependency-aware and reporting-line-aware agent actions rather than per-goal delegation — and the scheduled-prompt mechanism behind executive summaries to widen into other recurring outputs.
Other PM products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either GanttProject or Tability.
Celoxis publishes buyer-guide SEO two or three times a day and product news almost never.
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See all GanttProject alternatives → · See all Tability alternatives →
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
They serve adjacent needs but don't currently overlap on shipped themes. Tability is currently shipping more aggressively (velocity 7.5 vs 0.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Tability is currently shipping more aggressively (velocity 7.5 vs 0.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other PM products to evaluate alongside.
Top GanttProject alternatives in PM are ranked by recent ship velocity. Browse the "GanttProject alternatives" section above for the current picks, or visit /alternatives/ganttproject for the full list with editorial commentary on each.
Top Tability alternatives in PM are ranked by recent ship velocity. Browse the "Tability alternatives" section above for the current picks, or visit /alternatives/tability for the full list with editorial commentary on each.