The ItEN Retinue Builder
is now online - please go ahead and register and try it out.
Once logged in, you can start creating retinues, adding figures, and sharing them with other users. Public retinues can be "cloned" - that is, you get an exact copy of the retinue and every figure in it, which you can then edit and re-share.
Here's an example of a "public" retinue: Gaunt's Ghosts
. The site can generate printable versions of retinues, which can be used in games: here's the printable version
of the Gaunt's Ghosts retinue.
The site is still "beta", which means I am not aware of any bugs (but I am sure they exist). There is a feedback link in the top-right corner of every page which you can use to report bugs.
The logic for the calculation of points costs for figures and special abilities is based on what will appear in the 3rd edition core rules, so if the cost of a weapon is not what you're expecting, please bear this in mind.
Here are some screenshots of the Retinue Builder: