Work Breakdown Structure Software — Build, Visualize, Execute
LoopGantt includes interactive Work Breakdown Structure diagrams that are fully synchronized with your Gantt chart and Kanban board. Drag tasks to nest them under phases, collapse and expand sections, and see your entire project hierarchy in an org-chart-style tree — all free, all connected to your schedule.
Build Your WBS FreeWhat Is a Work Breakdown Structure?
A Work Breakdown Structure (WBS) is a hierarchical decomposition of a project into smaller, manageable components. At the top level is the project itself. Below that are major phases or deliverables. Each phase breaks down into individual tasks — the actual units of work that get scheduled and completed.
The WBS is one of the most important project management tools because it forces you to define everything that needs to happen before you start scheduling. Without a WBS, it is easy to miss entire categories of work — testing, documentation, approvals — that only surface when it is too late.
Most WBS tools are standalone diagram makers that produce static charts disconnected from your schedule. LoopGantt’s WBS is different — it is a live view of your project data that stays in sync with your Gantt chart and Kanban board.
Static WBS Diagrams vs. Live WBS in LoopGantt
Static WBS Tools
- Create a diagram, then manually recreate tasks in your scheduling tool
- WBS becomes outdated the moment you change the schedule
- No connection between the breakdown and the timeline
- Separate tool, separate login, separate subscription
- Export to image and hope nobody changes the plan
LoopGantt WBS
- WBS is a live view of your project — changes sync everywhere
- Drag tasks to nest under phases in the WBS or the Gantt chart
- Phase hierarchy is reflected in the timeline automatically
- One tool, one project, three synchronized views
- Export WBS as a diagram image or as part of your Gantt export
WBS Features in LoopGantt
Interactive Tree View
The WBS view renders your project as an org-chart-style tree diagram. The project sits at the top, phases branch below it, and tasks appear as leaves under their respective phases. The tree is interactive — click any node to see task details, and use the controls to edit duration, dates, and dependencies directly from the WBS view.
Drag-to-Nest Hierarchy
Building your WBS is as simple as dragging. Drag a task onto a phase to nest it as a child. Drag it back out to unnest it. The hierarchy updates instantly on the Gantt chart — nested tasks appear indented under their parent phase, and the phase shows a summary bar spanning all child tasks. You can also use indent/outdent keyboard shortcuts for fast restructuring.
Collapse and Expand
Large projects with many tasks can be overwhelming. LoopGantt lets you collapse phases to hide their child tasks, both in the WBS tree and on the Gantt chart. When collapsed, a phase shows a summary bar representing its total duration. Expand it to see the detail. This lets you zoom between big-picture planning and detailed scheduling without switching views.
Synced with Gantt and Kanban
The WBS, Gantt chart, and Kanban board are three views of the same data. Nest a task under a phase in the WBS and it appears under that phase in the Gantt chart. Move a task to “Done” on the Kanban board and the WBS node updates to show 100% progress. There is no manual synchronization — it is automatic and instant.
LoopGantt vs. Standalone WBS Tools
| Feature | LoopGantt | Standalone WBS Tools |
|---|---|---|
| Interactive tree diagram | Yes | Yes |
| Synced with Gantt chart | Real-time | Not connected |
| Synced with Kanban board | Real-time | No |
| Critical path on WBS tasks | Yes | No scheduling |
| AI-generated project structure | Yes | Manual only |
| Drag-to-nest hierarchy | Yes | Yes |
| Collapsible phases | Yes | Varies |
| Price | Free | $5-20/mo |
Frequently Asked Questions
What is a Work Breakdown Structure (WBS)?
A Work Breakdown Structure is a hierarchical decomposition of a project into phases and tasks. Think of it as an organizational chart for your project work. The project sits at the top, major phases or deliverables sit below it, and individual tasks sit under their respective phases. A good WBS ensures that every piece of work is accounted for and organized logically. It is typically the first step in project planning — define what needs to be done (WBS), then schedule when it happens (Gantt chart).
How do I create phases and nest tasks in LoopGantt?
There are several ways to build your WBS hierarchy in LoopGantt. You can drag a task onto a phase in either the Gantt chart task list or the WBS tree view to nest it as a child. You can use the indent (Tab) and outdent (Shift+Tab) keyboard shortcuts for fast restructuring. You can also right-click a task and choose “Make Phase” to convert it into a parent container. If you want to skip manual setup entirely, describe your project to the AI and it will generate a complete phase structure with nested tasks.
Can I collapse and expand phases in the WBS view?
Yes. Both the WBS tree view and the Gantt chart support collapsible phases. Click the expand/collapse toggle next to any phase name to show or hide its child tasks. When collapsed on the Gantt chart, the phase displays a summary bar that spans from the earliest child start date to the latest child end date. This lets you see the big picture without the detail clutter, and drill in when you need specific task information. The collapse state is remembered per session.
Is the WBS synchronized with the Gantt chart?
Yes — completely and automatically. The WBS tree, Gantt chart, and Kanban board are all views of the same underlying project data. When you nest a task under a phase in the WBS view, it immediately appears indented under that phase in the Gantt chart task list. When you drag a task to a new date on the Gantt chart, the WBS tree reflects the updated timing. When you move a card to a different column on the Kanban board, the task status updates everywhere. There is no manual sync step — it is all live.
Does LoopGantt include WBS templates?
Yes. LoopGantt includes 24 industry-specific templates that come with pre-built phase structures and task hierarchies across 8 industries. Templates cover software development (agile sprints, waterfall), construction (pre-construction through closeout), marketing campaigns, event planning, product launches, academic research, and more. Each template provides a complete WBS with realistic task durations and dependencies that you can customize to your specific project. You can also generate a custom WBS by describing your project to the AI.
Build Your Work Breakdown Structure
Interactive WBS trees, synced with Gantt charts and Kanban boards — all free, all in one tool.
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