Search Atom packages.

test-navigator

Navigate between implementation and test files easily.
DFreds
336

python-suite

Beta. A convenient display of all funtions and variables, plus other useful tools
Romaine
11,664

fold-navigator

A preview of your source code through code folding points.
turigeza
3,425

atom-lupa

searchable outline of JS code (functions, classes, variables, objects, TODO comments etc.)
hex13
7,716