It's not quite the same thing but you can [or used to be able to] use the "uncertain trip length" side of ITA at the end of the calendar to look past the 330 day hard stop for airlines which release further out - obviously you don't then see the ±2 days version of the results. Not aware of any other tools to replicate - everyone seems to take the safe option of stopping at 330 to avoid having to explain that some airlines won't be showing in the 331-360 range.