Managing things you need to get done without forgetting something important can really help you kill as many birds with one stone as possible.
The best software to-do lists offer features such as syncing and scheduling options, great plugins, notifications and reminders, or just the right mix of features and flexibility that make it easy to stay organized.
Google Keep is simple as with most Google / Apple interfaces, available on the web and for Android. Keep is a self synchronising notepad that can maintain checklists, photos and images, voice notes, and other text notes synchronised with their cloud. It supports time and location-based reminders (something I thought about in 2009 but never got further than registering georemind.com).
The weak points of Keep are there are no recurring tasks or calendar, no sub-tasks or advanced features that make it useful for planning bigger projects or handling regular tasks.
Any.do supports both the main mobile platforms, syncs smoothly between devices and platforms, can handle recurring tasks , timed and location-based reminders, and gets your day started with the Any.do “Moment,” a short review of everything you have on your table for the day.
Any.do has lots of features, even though its interface is designed to be simple and easy to get familiar with. However syncing can be tricky sometimes, and if you prefer to manage your list from a PC, you must to use their Chrome extension.
Wunderlist is a cross-platform, desktop and mobile to-do list manager with apps for all significant mobile and desktop platforms, It’s also a web based application, so you seriously have no reason to be without your to-dos on any platform you choose to use. It’s simple and easy to use, supports timed reminders, recurring to-dos (although its recurring feature is definitely lacking), separate reminders from the due date of the task, notes and additional info associated with your to-dos, shared to-dos with others, multiple categories, and more. You can star important tasks (but that’s as close to priority as you’ll get), and customize the look of the app. It’s broad platform support—and its webapp—mean you’ll always have access to your to-dos.