Check out
http://ermaster.sourceforge.net/Not as pretty as a tool like Omnigraffle but way more features such as import from database, various level of views (can display no columns, keys, or all columns for example), see all kinds of details, export many different ways, change tracking, etc.
- ER Omni Graffle version
- CMS ER graffle.png (155.17 KiB) Viewed 2012 times
- ER Master version
- CMS ER master.png (281.91 KiB) Viewed 2012 times
- ER Master table details
- CMS ER master drill down.png (172.92 KiB) Viewed 2012 times