I really like Lunatask. It’s a task/habit management app kind of like Todoist, but it works better for me personally. The premium version is quite expensive, but the free one is quite okay to work with. And it’s still in development so a lot of features are missing (you can’t set a time for a task for example which I find ridiculous).
Also Ghostwriter, it’s a really nice minimalistic markdown editor. I wish it was a bit more customizable but I guess I could try emacs for that.