In her August 23rd review of a trio of New Apps With Investor Appeal, Theresa Carey said:

Electronic Investor

"Realized will generate a Schedule D for you whenever you want, so you can keep an eye on your short-term and long-term capital gains as the year progresses. The program displays your largest unrealized tax losses, which you can sell to offset your capital gains, minimizing your tax payments."

Theresa has much more to say about Realized in her article.