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Full Gantt on every plan, including Free

Gantt charts with
critical path & AI

Critical path computed automatically. Four dependency types with lag. Saved baselines as Gantt shadows. Native .mpp import. AI risk overlay on the timeline. Not a Gantt-only tool — a full PM platform with a better Gantt.

Start free Run Schedule Health Check on a .mpp

Six things on the Gantt

Specific capabilities, not feature-list hand-waving.

Critical path highlighted automatically

No manual flagging — the longest dependency chain (and any tied chains) is computed and highlighted across the Gantt. Re-computes on every task or dependency change. Available on every plan, including Free.

Saved baselines as Gantt shadows

Snapshot the schedule at any point — kickoff, monthly review, post-replan. The Gantt overlays planned (faded shadow) vs actual (solid bar) so slippage is visible at a glance. Multiple baselines per project; switch via dropdown.

Four dependency types with lag/lead

FS (Finish-to-Start), SS (Start-to-Start), FF (Finish-to-Finish), SF (Start-to-Finish) — the four MS Project standards. Lag and lead in days, hours, or percentage. Onplana detects and refuses circular dependencies before save.

AI risk overlay on the timeline

Risk-detection suggestions surface as orange chips on the affected tasks in the Gantt. Click to see why the AI flagged it (schedule slippage, dependency cycle, resource overallocation, budget burn-rate anomaly), dismiss false positives, or accept and create a mitigation task.

Native .mpp import preserves all of the above

Drop in a .mpp from Microsoft Project; Onplana's MPXJ-based parser preserves all four dependency types with lag, milestones, ECFs, baselines, calendars. No XML conversion intermediate, no Project Desktop license needed.

Drag-and-drop scheduling, undo-safe

Drag a task to a new date; Onplana cascades dependents, refuses moves that would create cycles, and offers an undo. Drag a milestone to a new diamond position. Resize bars to change duration. Standard interactions, no surprises.

Onplana vs Gantt-only tools

GanttPRO, TeamGantt, Instagantt, GanttChartMaker — strong single-purpose tools. Where they end is where Onplana keeps going.

CapabilityGantt-only toolsOnplana
Critical pathOften add-on or premium-tier✓ All plans, including Free
Saved baselinesSometimes premium-tier✓ Multiple baselines, all plans
Four dependency types + lagOften FS-only✓ FS / SS / FF / SF + lag/lead
Native .mpp importVaries; often XML-only✓ Direct binary parse via MPXJ
AI risk detectionNot typical (single-purpose)✓ Continuous overlay on timeline
Resource pool / capacityLimited (out of scope)✓ Org-wide pool + capacity heatmap
Stage-gate governanceNot in scope✓ 12-stage pipeline + multi-reviewer gates
Portfolio rollupsNot in scope✓ Multi-project RAG portfolios

Specific Gantt-only tools vary in feature set. Use this as a category baseline rather than a per-product table — for product-specific comparisons see the dedicated /compare pages.

Try it on a real schedule

Have a Microsoft Project file? Run the free Schedule Health Check first — get a 7-point audit of critical-path bottlenecks, resource overallocation, dependency cycles, and schedule risks without signup. Then sign up free and import the same file to see it on the Gantt.

Run Schedule Health CheckSign up free

Frequently asked questions

Does Onplana have a Gantt chart on the free plan?▾
Yes — full Gantt with critical path highlighting, all four dependency types, milestones, and saved baselines on the Free plan. Most Gantt-specific tools gate critical path and baselines behind paid tiers; Onplana includes them on every plan because they're not optional for honest scheduling.
Can the Gantt handle large schedules?▾
Yes. The Gantt component is virtual-scrolled and handles 50,000-task projects without lag. The critical-path computation has a BFS guard with a 500-node ceiling for cycle-detection on save (which prevents pathological cases from blocking commits); the actual schedule walk is unbounded.
How does Onplana compare to dedicated Gantt tools (GanttPRO, TeamGantt, Instagantt)?▾
Gantt-only tools deliver a chart and stop. They're lightweight, focused, and good at what they do. Onplana ships a full PM platform around the Gantt — critical path, baselines, AI risk overlay, governance, resource pool, .mpp import, portfolio rollups. If you only need a one-off Gantt and never expect to grow into program management, a Gantt-only tool fits. If your team's scope is going to grow into PMO territory, you'll outgrow the single-purpose tool inside 12 months.
Does the Gantt integrate with the AI features?▾
Yes. AI risk detection surfaces as overlays on Gantt tasks. AI plan generation produces tasks with dates and dependencies that render directly on the Gantt. AI-suggested mitigations (when accepted) become real tasks in the schedule and appear on the Gantt. The Gantt isn't a separate surface — it's wired into the AI layer.
Can I import a .mpp file and immediately see the Gantt?▾
Yes. Sign up free, upload a .mpp via the Migration Wizard, accept the auto-mapped fields. The Gantt renders within seconds with all four dependency types, milestones, baselines, and ECFs preserved. Try the Migration Preview tool first if you want to see compatibility before signup.

Get the Gantt without the single-purpose limit

Free plan, no credit card. Full Gantt with critical path on day zero.

Start free See migration path