I was using Invention Calculator App found somewhere on Eve-O forums until I found out that it uses totally incorrect numbers for t2 manufacturing. That is - some time ago material requirements for t2 were changed a lot - cheaper materials are used in large quantities, more expensive ones are less used while keeping the overall cost about the same. The calculator had these numbers hardcoded into it. However I was surprised when I found that inventing certain ship wouldn't give me as much profit as the program told me (in fact I'm thinking on how to get back the isk I spent on invention itself).
So the question is - is there any invention calculator having the same functionality (get prices from eve-central, then calculate invention cost, average cost per success, profit from success, average profit from invention job and all that using decryptors and automatically providing me with a list of everything I can invent sorted by profitability) but using up-to-date blueprints data?

I’ve been looking for the same thing.
As an additional requirement – it should be runnable under Linux. Not necessarily cross-platform tool, but not some obscure .Net stuff which refuses tu run under wine.
I wouldn’t go as far as calling .net obscure… lol. I agree that cross platform support is preferred, though.
Some .Net programs do run under wine. Others are using something not available under Linux and thus fail to run. That’s what I call obscure.