Microsoft Office Access - Access is now much more than a way to create desktop databases. It’s an easy-to-use tool for quickly creating browser-based database applications.
Freeplane - Freeplane is a powerful and free software for building mind maps.
My Visual Database - Using My Visual Database, you can create databases for invoicing, inventory, CRM, or any specific purpose.
Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.
MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.