DataTip - The fastest way to store & access your critical datapoints.

EssentialPIM - EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.

HeyForm - Paperless data collection with better data insights

Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

Quick Freeze - Move faster by skipping the setup and management of local databases and direct integrations.

Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.