Every task tells you how much room it has
The slack you baselined in January is not the slack you have in April. Every completed task, every slip, and every scope change moves it. Float that is only recalculated when someone remembers to is a map of where the programme used to be.
Forward pass, backward pass, float
Depentra runs the standard critical path method over the dependency graph. A forward pass computes the earliest each task can start and finish, given everything it waits on. A backward pass computes the latest each task can start and finish without pushing the programme end date. The gap between the two is total float: how many days that task can slip before it costs you the end date.
Tasks are sorted into dependency order before either pass runs, so a task is never scheduled before the work it depends on has been resolved. Anything with zero float cannot slip at all: the day it moves, the end date moves with it.
A property, not a report
Float is a property you add to the table like any other. Filter it to zero to list the tasks that cannot slip, sort it ascending to see what is closest to the edge, or filter it to five days or fewer to watch the chains about to become your problem before they do.
Because it is a property, it goes wherever the table goes: into saved views, into filters and footer calculations, and into every export, including a summary that totals float by owner or by group.
Recalculated on the revised schedule, not the original
The passes run against the schedule including any delays currently applied, real or simulated. That is the detail that makes the feature useful during a delay conversation rather than after one: apply a slip and every task's float re-forms in front of you, because it is being recomputed from the situation you are actually in.
Dependencies are Finish-to-Start with lead and lag time, and lag is carried through both passes, so a link with a ten-day wait between finish and start produces different float from a plain one.
Total Float
Total float for every task, recalculated whenever a date, duration, dependency, or delay changes, as a property you can add, filter and sort like any other.
Related capabilities
Delay Simulator
Model a hypothetical delay across your whole roadmap without touching the live plan. See the cascade, the moved milestones, and the new end date before you commit.
Gantt Chart
A Gantt chart with real dependency links, propagated delay bars, actual against planned, milestones, and a live today line.
See it on your own roadmap
Start from a template or import what you have, link the dependencies, and the analysis runs itself.