What is the difference between task management and project management software?

Task management tools (Todoist, Things, Microsoft To Do) are designed for individual or simple team task tracking without complex project structure. Project management software (Asana, Monday.com, ClickUp) adds dependencies, timelines, resource management, and multi-team coordination. Most SMBs need project management software, not just task management, once they're coordinating work across more than 2–3 people.