This is just a few of my tools.
Many more can be found on my blog and Nukepedia.

Silk

Silk

Particle Lights

Blinkscript, Toolset
Particle Lights

Spotflare

Toolset
Spotflare

(unnamed)

VR Inspector for Hiero

StickIT

Frame Median

Blinkscript, Toolset
Frame Median

Cube Keyer for NukeStudio

Petzval Bokeh