The general marital match
analysis is done on the basis of Moon's disposition on both horoscopes; and
there are some sites, which offer free match making analysis.
However, for appropriate analysis, you may consult some astrologer and ask him
to do the match making analysis for you.
The analysis done on the basis of Moon's disposition (also known as Guna Milan
or Melapak) hold very little value; because, the Moon remains in one zodiac
sign for around 2 1/2 days; and every person born within those 2 1/2 days will
have the same Moon sign.
Therefore, you should ask for match making analysis done on the basis of natal birth
chart of both persons involved. And, the best is to go for paid consultancy
because it actually requires a lot of time and effort - and the person offering
free services in this regard may either be an amateur or may not be doing
justice with his analysis.