3.0 Haste granted a exta standard action (which can be converted to a move action), but then that is stuck in 3.0 because it was very strong.
I've flirted with making 3.5 Haste grant an extra move action, instead of an extra attack, so it actually mirrors slow (slow effective takes away a move action, limiting you to a move or standard).
In the RAW, Hustle power is probably the most accessible option. It can be had as an expensive tattoo (personal power, so x2 cost), but it's only useful if the DM lets you activate it as a swift, otherwise it's VERY self-defeating.
Inspired by an Arcana Evolved feat, I made this houseruled feat for my games:
Fleet of Foot [General, Scout, Monk]
You are capable of occasional bursts of speed or energy.
Benefit: Once per encounter, you may take an extra move action during your turn. Thus, you could walk up to an enemy and then unleash a full attack on him; move towards an enemy, attack, and move away in a similar fashion to Spring Attack; etc... A Scout with this feat can use a full attack action after using the extra move action to apply Skirmish damage to all attacks. Out of combat, this feat can effectively be used as often as a skill trick, ie, once every five minutes.
Special: A Scout may take this as a bonus feat, as can a monk with her level 2 or level 6 bonus feat.
(Yeah, Fleet of Foot exists as a feat name already, but it sucks so much I refuse to recognize its existence

It's an awesome Eldar ability in Warhammer 40K, it deserves to be a cooler power in 3E)
But again, that's just a houserule...