I used a similar tool called Sqlectron in the past, which would hang for queries returning more than about 500 rows. This tool seems to be much better at that.
I don't really feel comfortable providing my database credentials though. I will probably host it myself for any serious work.
I'm coming from Sqlectron too - i used it for my database classes with my students. The main reason i created db-sql was that schools and universities block almost all ports, so my database could not be reached. This is solved by db-sql. And yeah, the results are displayed on demand :)
Good news about security - your db credentials are stored encrypted and they can only be decrypted when you provide the encryption key, which is available client-side only (it is created on login).
