Squaero

Squaero is a native database client for SQLite, MySQL/MariaDB, PostgreSQL,
MongoDB and SQL Server. Browse schemas in a tree, read and edit rows in a
grid, write and format SQL, and use the ER diagram, the query builder, the
server monitor, users and permissions, and charts over any result.

Connections can go through an SSH tunnel and use TLS. Everything runs
locally: saved connections stay on this computer.