As for the to-do part, I use a personal kanban implemented with Trello. It's simple, even primitive, but it has been working great so far. To organize my meeti

As for the to-do part, I use a personal kanban implemented with Trello. It's simple, even primitive, but it has been working great so far. To organize my meetings, my events, I use a CalDAV compatible service (FastMail) which is synchronized with my smartphone. I work as an independent consultant, and I don't make the distinction between my "personal" time and my "professional" time. So, I use the same calendar for all my stuff.