| Mort the Cleverly Named |
Nope. The closest I know of is Penetrating Strike, which isn't really that similar at all.
If this is for a home game, you could always homebrew a "Clustered Stabbing" or whatnot to fill the gap. It wouldn't break the game, just bring melee closer to ranged as a choice for high level.
| deuxhero |
^^^ You have a decent number of options, many not usable by archers, to get 5 extra damage per attack though, which works out to the same thing outside of dealing minimum damage.
Clustered Shots is there to overcome how archers get more attacks (from consistent full attacks and core feats that add arrows fired), but low damage per shot and normally get utterly hosed by DR. You don't really "need" it as a 2 handed weapon user who will only get one attack (very strong) attack on the first round till he can get pounce (If a Barbarian or Synthersist. Mobile Fighter can get a gimped version) and should kill his target anyways on the second round.