We use Airtable and I like it! It’s easy to set automated reminders for reporting due dates, which we set to go out one month, one week, and one day ahead. It also provides a way to track incoming grant payments. For instance, for a grant paid in three installaments, we would enter grant payments as “payment 1/3, payment 2/3, payment 3/3.” When each of those payments arrives, we have an automation set where someone just has to check a box, and then an email goes out to the project notifying them that the payment has arrived. If these are the kinds of functionality your practice needs out of your grants system, Airtable might be useful.