There's the Goovolver and it's upgrade Goozooka, but they do Tease damage to a single target. CTL-3 Electric Launcher or the Acid Launcher, but I don't think they do area damage.
Smugglers have Grenades/Gas (Lust) Grenades as a Perk, and Mercenaries can get Carpet Grenades as a Perk. Gravidic...