blurdecaynoise (16k) noise modifier that decays off from it's center - blur studios

blurdeflector (37,8k) deflector with variable speeds - blur studios

blurpartforce (21,5k) 2 particle warps - blurwind and randomwalk - super cool. wind doesn't accelerate endlessly, like the max default - blur studios

chase gravity (17,2k) causes particles to chase the space warp or a designated object - source code (36,7k) - peter watje

delector+ (21,3k) it can pass through and affect stationary particles, supports friction and energy transfer - source code (26,9k) - peter watje

drag (12k) applies variable drag to particle motion - mondo media

gravity+ (75,5k) includes 3 gravity spacewarps: planar, spherical, and cylindrical - source code (142,8k) - peter watje

maelstrom (28,2k) - movie (1463,4k) - blur studios

particle displace (11,4k) this is plugin is a simple particle displacement modifier. basically, it works the same way as the regular displace modifier except instead of a gizmo a particle system is used to displace the object - source code (32,8k) - peter watje

paricle gravity (14,6k) particle gravity just causes the particles in the system to attract or repel each other - source code (31k) - peter watje

soft bomb (24,9k) - ket-sp