Streaks - The to-do list that helps you form good habits.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Taskful - Deadlines, meet your match.
Linker - Cloud based bookmark manager
ToDoList - Windows desktop application to stay on top of your daily tasks.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.