Gantt Online Free Tool

This tool provides a compact, serverless model for project planning and scheduling using a Gantt-style representation. It accepts tasks with durations and dependencies and outputs a schedule, with computed ES/EF, LS/LF, Slack, and a clear critical path. Target users include project managers, schedulers, PMOs, and team leads across software, construction, events, and marketing. It supports multi-project views and baseline scenarios, and it is accessible without installation. The underlying approach emphasizes correctness, reproducibility, and interchangeability with downstream analytics.

Conceptually, the tool builds a directed acyclic graph of tasks, performs a forward pass to compute earliest start/finish, a backward pass for latest start/finish, and derives slack. It identifies the critical path and highlights zero-slack tasks; scenario analysis by adjusting durations or dependencies is supported. Core features include input validation, dependency checks, simple export options (CSV/JSON), and deterministic outputs suitable for integration with dashboards or pipelines.

Use cases span engineering sprints, construction phasing, marketing campaigns, and event timelines. The value lies in providing a free, accessible, and interpretable planning method that scales from small teams to programs, while preserving data portability and auditability.