MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
LibreOffice - Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
Brilliant Database - Create a personal or business desktop database fast and easily using this simple all-in-one database software. Free 30 day trial.
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
CouchBase - Document-Oriented NoSQL Database
ONLYOFFICE - ONLYOFFICE is a complete office and productivity suite.