Ominder is described as 'Keep track of all your Events with free SMS and Email notifications. Store and organize your Events and To-do on Ominder and never forget them again. Events include weather forecast for better planning' and is a todo list manager in the online services category. There are more than 100 alternatives to Ominder for a variety of platforms, including Web-based, iPhone, Android, Windows and iPad apps. The best Ominder alternative is Trello, which is free. Other great apps like Ominder are Google Calendar, Todoist, Workflowy and TickTick.