Maptitude - Maptitude is a mapping software that is fitted with GIS features that avail maps and other forms of data regarding the surrounding geographical areas. Read more about Maptitude.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
PostGIS - Open source spatial database
FriendlyData - Communicate with databases like a human
ArcGIS Pro - Explore ArcGIS Pro resources such as tutorials, videos, documentation, instructor-led classes & more. Find answers, build expertise and connect with the ArcGIS Pro community.
SpreadsheetDB - A database that you can query with spreadsheets