[charmides]

That is not a favourable comparison for this website.

For those who are looking for chess opening preparation software for free, I recommend just using lichess.org. Considering that lichess is ad-free and run by volunteers only, it is amazing how much it offers (although it's not enough for chess professionals).

[ganeshkrishnan]

Lichess is for professionals. Plenty of GMs ims and masters play on it. Even Magnus plays the tournaments. This is like saying Linux is not enough for computer professionals.