OK so everyone knows inventory.overture.com has been down for weeks.

Are there any tools out there very similar and as accurate / useful as that tool? I need a replacement bad

Worked for me two days ago... but you could try Aaron Wall's gadget.

It is up and down, I used it today but then it was gone again, then again it worked... I guess they can't decide if they will shut it down.

You can try the new wordtracker free keywords suggestion tool: freekeywords.wordtracker.com

and the external tool uses wordtracker's database http://www.wordtrackerkeywords.net

this tool has been sketchy for a long time. And with more and more third party tools hitting it all day it has been next to useless for a year now. It just seems to off gotten REALLY bad lately.

i have migrated over to wordtrackers new tool and it does what it needs to do IMHO, which is show you some long tail terms. Actual search volumes don't mean much. Some terms show 100 a month and get zero in reality - others show 20 and get you 50 clicks a month that convert at 50%. No one looks at em anyway - you just bulk upload the whole fkn list and see where you are at in a few days.

http://freekeywords.wordtracker.com/

Overture's tool is working for me right now. What they really need to do is put a good captcha on it. Then the noob black hat seo's won't be able to scrape. (The really good black hat programmers will figure out how to beat it though. But they might decide to try cracking keyworddiscovery or wordtracker's captchas first, thus distributing the load. )

Overture: http://inventory.overture.com/d/sear...ry/suggestion/
KeywordDiscovery: http://www.keyworddiscovery.com/search.html
Wordtracker: http://freekeywords.wordtracker.com/

All the above are free and return 100 keywords at once. I would also suggest:

Google Trends: http://www.google.com/trends/

for double-checking.