Hacker News Reader

I believe it's Oracle SQL Developer:

http://www.oracle.com/technetwork/developer-tools/sql-develo...

I use an older version of Oracle SQL Developer as we aren't allowed to install the latest and I usually turn the autocomplete stuff off. Half the time it's awesome, half the time it takes several seconds, during which the IDE is unusable. This is most likely due to me being remote to the database which is about 1700 miles away.

Quest TOAD

http://www.quest.com/toad/

Microsofts SQL Management Studio does this also.

Also have a look at the tools from Quest software E.g. Toad and Pl/SQL Developer. Both great tools