PopSQL (https://popsql.io) should give you the modern UI you're looking for. Although you will have to create a connection per database, unfortunately.
Won't show more than a white screen because of "[Oracle] NJS-045: cannot load the oracledb add-on binary for Node.js 8.2.1 (linux, x64)" - this does not inspire confidence.
Website says "PostgreSQL, MySQL, BigQuery, SQL Server, Redshift, Snowflake, SQLite, Presto, Cassandra, Oracle, ODBC, and more on the way."
Won't show more than a white screen because of "[Oracle] NJS-045: cannot load the oracledb add-on binary for Node.js 8.2.1 (linux, x64)" - this does not inspire confidence.
Website says "PostgreSQL, MySQL, BigQuery, SQL Server, Redshift, Snowflake, SQLite, Presto, Cassandra, Oracle, ODBC, and more on the way."