SQL databases

I want to pick an open-source replacement for Amazon Aurora, Google Cloud Spanner (storing business data in tables that many users and servers can use at once). Below is a list from Open Source Everything (CC BY-SA 4.0), in the order its website shows it. The order is a starting point, not a verdict. - PostgreSQL: PostgreSQL is one of the world's most trusted databases: it stores business data in tables and answers questions about it. Many cloud database services are built on it. You can run it yourself on your own computer or server. [Advanced setup; Windows · Mac · Linux; replaces fully; PostgreSQL; https://github.com/postgres/postgres] - PingCAP: TiDB is a database that stores structured data and lets many machines work together so it keeps running if some fail. It is aimed at developers and companies that need a large, always-on database that speaks the MySQL language. [Advanced setup; In your browser; replaces fully; Apache-2.0; https://github.com/pingcap/tidb] - MariaDB: MariaDB is a popular free database for storing business and website data in tables. It started as a community branch of MySQL and works as a drop-in replacement for it. You run it on your own server. [Advanced setup; Windows · Linux; replaces fully; GPL-2.0; https://github.com/MariaDB/server] - CrateDB: CrateDB is a database that stores and searches large amounts of data, including time-based readings, and can run across many machines at once. It is aimed at developers and data teams who need fast analysis of data as it arrives. [Advanced setup; runs on a server you set up; replaces fully; Apache-2.0; https://github.com/crate/crate] - Yugabyte: YugabyteDB is a database that stores structured data and runs SQL queries, built to keep working across many servers and regions. It is aimed at developers and companies running business applications that need reliable, large-scale data storage. [Advanced setup; Mac · Linux; replaces fully; Apache-2.0; https://github.com/yugabyte/yugabyte-db] Setup rating: "Easy setup" means you can install it like a normal app, use it in a browser. "Advanced setup" means you must run it on your own server or use the command line, or it is a tool for developers. Full details: https://opensourceeverything.org/data/groups/sql-databases.json Before recommending anything, ask me these three questions (one at a time, in plain words): 1) Which device or devices will I use it on (Windows, Mac, Linux, Android, iPhone)? 2) How comfortable am I with technical setup: only installing apps from a store, happy to follow a step-by-step guide, or comfortable with servers and the command line? 3) What is my budget: free only, or willing to pay for hosting or support? Then recommend one to three projects from this list only, and for each say why, using how fully it replaces the app, its setup rating, and the devices it runs on. If nothing on the list fits me, say so plainly instead of stretching.

Read the list of open-source projects at https://opensourceeverything.org/data/groups/sql-databases.json. Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do. My project or idea: