When comparing SEQUEL for PostgreSQL vs QueryPie, the Slant community recommends QueryPie for most people. In the question“What are the best Mac OS X GUIs for PostgreSQL?” QueryPie is ranked 7th while SEQUEL for PostgreSQL is ranked 8th.
Ranked in these QuestionsQuestion Ranking
Pro Very powerful and extended autocomplete.
Pro Customisable interface, feature rich SQL Editor with syntax highlight and autocomplete
Pro Thought-out object editors
There is no need to jump around tabs, etc. Everything is always available on the same page.
Pro Great GUI layout for small screens
Perfectly fits on a Macbook Pro 13's screen. Very comfortable to work with.
Pro Provides detailed control over every database element
Every database element has it's own management form, providing all available settings and parameters modification.
Pro Easy update table data from custom query
Easy to edit sql query result data and push back to database.
Pro Clean and pretty UI/UX
The default color is dark and comfortable for the eyes.
Pro Multiple Query Tabs!
The multi-tab and multi-SQL-runs are great. It's always good to be able to compare results in one window instead of having to go through and re-run stuff.
Pro Fast Auto-complete
Pro Multiple Databases
They only support 2 at the moment (MySQL and MariaDB) but their social site says they'll be updating with more DBMSes in the near future which is pretty nice because I hate learning new GUIs~
Not sure about Linux but it works on Windows and Mac just fine!
Con No Support documentation
Con No Passphrase for SSH keys
No ability to add a passphrase for an ssh key, refuses to connect to remote server without it.
Con No trial version
Con Closed source
Con Requires creating an account
Requiring an account is rare on SQL IDEs...