What chess opening do you play most?

Van't Kruijs Opening, which is 1.e3 2. Ne2. It's not very good though, but I'm a very careful player.

That, or Mieses Opening, which is 1.d3 and then getting the knight on d2 or c3. 

white: queen's gambit against d5, stonewall against KIA.  black: mason attack against d4, c5 against anything that prevents me from playing d5.

well, does anyone play dragon

If I can get to that point in the sicilian line I use, then yes, but I focus only on the opening I can play at the time.

Trompowsky
Modern Scandinavian
Benko
Blumenfeld
London

Thats more or less my entire repertoire. I guess the single one I play the most is the scandinavian, since i get it on move 1.

i play the reti as white and french against e4. i haven't really solidified what i play against d4 or c4 as i don't seem to play against them very often.

Blackmar Diemer Gambit

Trompowsky

Modern Scandinavian

Queen's Gambit Declined - Tarrasch Variation

um..... well, i am still new to the game, but from what i have learned, then i would say the queenside opening style. i really havent decided on my favorite opening with it

Queens gambit, if they decline it then Catalan,this is for white. For black I play the kan variation

Watch someone say "parham"

As white, usually try to get a King's Gambit Position

As black, I usually play Sicilian or French, but when I play any Sicilian I try to make a Hedgehog formation.

ruy lopez and english as white and as black i prefer the scandinavian defense against e4 and the dutch defense against d4

Have I posted here before? Sicilian, Nadjorf or Dragon.

White: Vienna Gambit

Black: French, QGA, or Budapest

So you most likely play the french or caro the most as white
Its why I quit the BDG, seemed only every like 8 games after 1d4 d5 2.e4 i actually got the accepted.

I'm seriously considering from now on only playing the accelerated (2 Bf4) London as white, 3...Qd8 Scandinavian and 4...Qb6 Slav as black. A repertoire doesn't get any simplier than that. A bit passive but solid, similiar setups and low theory. If I decide it's a bit too routine for me I might instead only play 1 b3 (Nimzo-Larsen) and 1...d6 (Black Lion/Modern Philidor/Old Indian), which would have somewhat more imbalance going on. 

1 d4 d6 2 c4 e5 isn't actually an Old Indian. It doesn't have a name. I call it an Old Indian because it's similiar in setup and I have to call it something. 

The worst i seem to end up with, even when people follow database moves is a misplaced piece in the 3.d4 mainline. People really seem to favour Bb5+, though personally I actually like playing against it and i think black is ok.
The comments on that page are horrible, very few of those people know anything about it. So I wouldnt take it as a reliable source for black having 'problems'.

My calculus used to always play the Scotch Gambit when he was in highschool.

I'm quite fine with facing those. e4 players have to deal with those as well. And we all have to deal with defesive openings like the Modern or the Pirc; closed games cannot be avoided. Usually they take the gambit in blitz. Maybe 20% of the time I get a French and 10% a Caro-Kann. And occasionally they decline with something else.

I actually find the tendancy for 50% of my opponents to play 3.Nc3 against the Scandinavian far more irritating. Yeah it throws away White's first move initiative. But it doesn't give me an advantage either. Really it just feels like a waste. I'd rather be practicing the critical lines but they force me to play through this garbage.