Kai Gradert- DesignerFieldbook is super versatile and powerful. It's like spreadsheets on steroids. You can easily customize it to your own needs and workflow. It comes with a powerful API to further extend the functionality.
Allan Caeg- Founder, NorthStories.ioThey're spreadsheets that work great as CRMs and project trackers. Unlike your typical spreadsheet, you can click on an entry. For example, you can click a project (that's associated to a client). That will bring you to a project's page and show all its metadata.