Toad for SQL Server is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best Mac alternative is DBeaver, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Toad for SQL Server and 13 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Toad for SQL Server are SQuirreL SQL (Free, Open Source), Azure Data Studio (Free, Open Source), PopSQL (Freemium) and RazorSQL (Paid).
Open Sqlite databases and explore the internal organisation of various objects such as schema, tables and indices. To understand how Sqlite3 data is organised, please see [Database file format](https://www.sqlite.org/fileformat.html) from Sqlite website.