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Comparison · PM
GanttProject vs Aha!
A side-by-side editorial comparison of GanttProject and Aha! — release velocity, themes, recent moves, and the top alternatives to consider.
GanttProject vs Aha!: at a glance
What is GanttProject?
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.
What is Aha!?
Aha! is turning a roadmapping suite into a place where the app gets built and tested.
Aha!'s recent releases nearly all land in Builder, its AI app builder, and they are the unglamorous parts that decide whether generated software is usable: built-in authentication with sign-in methods and governance controls, and now virtual user testing that exercises an app before deployment. Elle, the AI assistant, is being pushed into the planning surfaces too, turning records into whiteboard user journeys. Interleaved with these are essays on how to evaluate AI work, which suggests the company is arguing the case as much as shipping it.
GanttProject vs Aha!: editorial side-by-side
A desktop Gantt tool on a multi-year cadence, tethering itself to its own cloud
◆ Current state
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.
◆ Where it's heading
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.
◆ Prediction
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.
Aha!
6.3PM
Aha! is turning a roadmapping suite into a place where the app gets built and tested.
◆ Current state
Aha!'s recent releases nearly all land in Builder, its AI app builder, and they are the unglamorous parts that decide whether generated software is usable: built-in authentication with sign-in methods and governance controls, and now virtual user testing that exercises an app before deployment. Elle, the AI assistant, is being pushed into the planning surfaces too, turning records into whiteboard user journeys. Interleaved with these are essays on how to evaluate AI work, which suggests the company is arguing the case as much as shipping it.
◆ Where it's heading
The suite is extending past planning artifacts into working software and the validation loop around it. Auth first, then simulated users — the sequence tracks the objections a product manager would raise about shipping something a model generated. If that continues, Aha!'s competitive claim shifts from managing what gets built to producing and pressure-testing it in the same tool.
◆ Prediction
The next gap in that loop is what happens after a Builder app leaves the sandbox — deployment, environments, or handoff to the engineering team. Expect Elle to keep absorbing planning surfaces beyond whiteboards.
Alternatives to GanttProject and Aha!
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 Aha!.
Planify
A GNOME task app that has turned CalDAV interoperability into the product.
Kanri
An offline-first kanban app whose solo maintainer has been quiet for ten months.
Super Productivity
A solo-focused task manager grows a plugin layer and, quietly, a collaboration story
Notion
Notion is turning itself into the place other companies' agents come to work.
Akiflow
A time-blocking client spending its releases on calendar correctness and crash fixes
See all GanttProject alternatives → · See all Aha! alternatives →
Recent activity from GanttProject and Aha!
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoAha!Test AI-built apps with virtual users in Aha! Builder ⚡
- 7d agoAha!Visualize the user journey on a whiteboard with AI
- 8d agoAha!'Time saved' is the wrong way to talk about AI
- 14d agoAha!Send better emails to customers who share product feedback
- 16d agoAha!How AI prototyping is changing the way product managers work
- 17d agoAha!Our AI app builder includes built-in authentication
- 7mo agoGanttProjectGanttProject 3.3
- 1y agoGanttProjectBuild tag restores Linux and Windows packages
- 2y agoGanttProjectBuild tag adds Intel and Apple Silicon macOS packages
- 4y agoGanttProjectGanttProject 3.2
- 5y agoGanttProjectGanttProject 3.1
- 5y agoGanttProjectGanttProject 3.0 ⚡
Frequently asked questions
What is the difference between GanttProject and Aha!?
They serve adjacent needs but don't currently overlap on shipped themes. Aha! is currently shipping more aggressively (velocity 6.3 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.
Is GanttProject better than Aha!?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Aha! is currently shipping more aggressively (velocity 6.3 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.
What are the best alternatives to GanttProject?
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.
What are the best alternatives to Aha!?
Top Aha! alternatives in PM are ranked by recent ship velocity. Browse the "Aha! alternatives" section above for the current picks, or visit /alternatives/aha for the full list with editorial commentary on each.