mycli - A CLI for MySQL with auto-completion and syntax highlighting
usql - Universal command-line interface for SQL databases
DBeaver - DBeaver - Universal Database Manager and SQL Client.
Apache Drill - Schema-Free SQL Query Engine for Hadoop and NoSQL
SQLAlchemy - SQLAlchemy is the Python SQL toolkit and Object Relational Mapper that gives application developers the full power and flexibility of SQL.
Opbeat - Application monitoring for developers