How to know which version of an apps available in various FreeBSD release?

[Garrett Cooper]

On Wed, Jun 2, 2010 at 2:09 AM, Emanuel Haupt <ehaupt at freebsd.org> wrote:
> Tao Wang <dancefire at gmail.com> wrote:
>> Hi,
>>
>> I'm doing a survey about the availablilty of some packages in
>> different platform, including FreeBSD release. I want to know whether
>> the package is existed in the specific FreeBSD release, and which
>> version it is? I found: http://www.freebsd.org/ports/ , however, it
>> is only against -STABLE or -CURRENT. I also need to know the
>> information on previous release. How to do it? Thanks.
>
> All the information you need is available in INDEX:
>
> http://www.FreeBSD.org/ports/INDEX-8.bz2

That only works for the head of each branch though, right?
Thanks,
-Garrett