Collaboration depth
monday.com
Assignments, in-task comments with mentions, shared boards with Gantt views, and dashboards that compile multiple boards — including workload and budget metrics — give teams real shared planning. But we found no public information on guest or client access, dependency handling, or a permissions model beyond dashboards being private or public, which is exactly where the marketing copy stops.
Stackfield
Assignments, comments, four dependency types with automatic planning and a critical path, plus cross-project portfolios from Premium are all documented, and the External role comes free from Premium with permission boundaries spelled out (local links do not extend access). We found no public information on a workload or capacity view — the member perspective only counts tasks by status — so I stop short of the top.