What is 'co-work' in the Claude desktop app and how is it different from the browser version?

Co-work is a feature available in the Claude desktop version (not the browser version). It shows a working folder/context panel and a progress tracker for a task — displaying what files it's referencing and what it has accomplished so far while you converse back and forth about what you need. From co-work, Claude can take control of your browser directly (without needing the separate Chrome extension plugin) and work more independently on complex, multi-step tasks — including things like setting reminders or timers for future dates.