Question: As the title says I am looking for any abilities, spells, enchants, ect that would stack with [haste](http://www.d20pfsrd.com/magic/all-spells/h/haste)/[speed](http://www.d20pfsrd.com/magic-items/magic-weapons/magic-weapon-special-abilities/speed) (Preferably speed). I am attempting to build a character who hits A LOT. I know I have seen something somewhere that stacked with speed but I cannot find it anywhere now.

The build I am attempting will be using multiweapon fighting with a speed enchant on each weapon he uses.

EDIT:

To be more specific I am looking for abilities, spells ect that will not change the character physically and will only use his weapons. 

The answers so far offer good advice but not quite what I am looking for.

YogoZuno is the closest with mentioning the Monk and two weapon fighting tree.

Answer: 
A monk can flurry built-in, plus when it gets a pool of ki points, it can add an additional attack once per round. So, with Haste and a Ki point, that's 4 attacks per round, before even adding iteratives or natural attacks. A Zen Archer with a ki pool and Haste could fire 4 bowshots a round without iteratives. A Ninja using the Flurry of Stars trick, Rapid Shot and Haste could throw 5 shuriken in a round (at -4 to hit!), assuming he had Quick Draw to draw them all.

If you continue looking at the monk path, the Drunken Master allows a potentially unlimited supply of ki points once you hit 3rd level, allowing you to add an extra attack to a reasonably large number of full attacks.

The two-weapon fighting tree is another option for increasing attacks per round, although it does (in general) limit you to light weapons. Generally, you'll get an attack with each weapon (with slightly less Str bonus on the second), plus haste for 3 attacks, at -2 to hit.

A catfolk with claws and the feat Catfolk Exemplar has two 1d6 natural attacks built-in. The Barbarian Beast totem powers can also provide natural attacks, as can several options on the Tiefling from Blood of Fiends, or the Ranger Natural Weapon style.

Another possible method is using a Magus and touch spells with Spell Combat. When casting a touch spell, a free attack is generated. So, when using a touch spell with Spell Combat, a Magus can have two attacks in a round (at -2). Add haste, and it's 3. Unfortunately, due to Spell Combat being a full round action without being actually being a full attack, you can't really combine this method with any of the other suggestions I've made, except a Monk's Ki pool and natural attacks.
I can help with this:  

the Aegis (psionics unleashed+unlimited possibilities) can have another set of arms capable of wielding weapons at 8th level  

the Monk, with the appropriate fighting styles, can hit even not in his turn (for example when someone tried to hit him but missed)