PyGantter
Turn a CSV, TSV, or JSON task list into a Gantt chart with critical path, dependencies, milestones, and progress. A typed Python CLI built on Plotly.
A command-line tool that reads a task file, computes the critical path, and renders a themed chart to PNG, SVG, PDF, or interactive HTML. It draws dependency arrows, milestone diamonds, a percent-complete overlay, and a today marker, and it rejects missing fields, unknown dependencies, and dependency cycles with a readable message instead of a stack trace.