I really like Notion
I have a confession to make. I really like Notion. Notion, at its most basic, is a note-taking application. It allows you to create pages that contain various content, like web links, markdown, checklists, embedded content and so on. I am not alone too in liking Notion — look for the #notion hashtag on Twitter, and you'd find people rabidly professing their love. They aren't celebrities trying to sell something, but normal and authentic people who love a product.
My wife, who is a bit flabbergasted that I recommend Notion for everything, told me frankly, "Isn't this like Todoist? Or some journal app? There are dozens of such programs out there on the Internet. Free or paid."
It's true. You can find dozens of apps that can provide you with a Kanban. It's a crowded field.
But Notion is special.