Sail

Sail is a database browser. It allows to browse the contents of a MySQL database via SQL queries, or by right-clickng values to create "joins".
The primary focus of Sail is to keep all query results on page (unlike PHPMyAdmin) so coming back to a previous is fast and convenient.
Additionally, it provides a way to bundle multiple queries together in the form of a "board". Boards can display results as classical tables or more visual ways like scatter plots.

Example board

Example: Plot