The best alternatives to 1st things 1st are Makergrid, The Weekr, and Priorities. If these 3 options don't work for you, we've listed a few more alternatives below.
Makergrid is our take on simple product management tool to help you keep all your product ideas in one place, identify opportunities using prioritization matrix and plan execution using traditional column-view.
"Priorities" is the most effective to-do app you'll ever need. This method is used by famous investors and business people. If they can get by their schedule with this simple method for getting things done, we should be able to do it as well.
Free tool to prioritize a subject with others. Nothing fancy, just results. What do you want to prioritize, invite people, get prioritized results. Includes grouping, volume control, and satisfaction calculations for the results so you know how each group will feel about the recommended priorities. Process is time-locked and auto-deletes after expiration. No logins, signups, cc's, and so on. Details are saved in the client-side url for privacy. Rapid learning mode with 60s and 5m sessions.