Friendly SQL is described as 'for Oracle is a lightweight, zero-configuration Oracle client featuring a SQL Editor and Visual Database Client Browser' and is an app in the Development category. There are seven alternatives to Friendly SQL for Windows, Linux and Mac. The best alternative is Oracle SQL Developer, which is free. Other great apps like Friendly SQL are SQuirreL SQL (Free, Open Source), PL/SQL Developer (Paid), Toad for Oracle (Paid) and SQL Workbench/J (Free).
Oracle SQL Developer is a free and fully supported graphical tool for database development. With SQL Developer, you can browse database objects, run SQL statements and SQL scripts, and edit and debug PL/SQL statements.
Toad is an industry-standard tool for application development. Using Toad, developers can build, test, and debug PL/SQL packages, procedures, triggers, and functions. TOAD users can create and edit database objects such as tables, views, indexes, constraints, and users. TOAD.
TOra is an open-source multi-platform database management GUI that supports accessing most of the common database platforms in use, including Oracle, MySQL, and Postgres, as well as limited support for any target that can be accessed through Qts ODBC support.
Eclipse SQL Explorer is a thin SQL client that allows you to query and browse any JDBC compliant database. It supports plugins with specialized functionality for individual databases (Oracle, DB2 and MySQL) and can be extended to include specialized support for other databases.