.JSS file extension

This is the basic program to work with .JSS extension

Subtitle Workshop

Subtitle Workshop Subtitle File

Subtitle Workshop is a application designed for creating, editing and converting text-based subtitle files. It supports all the subtitle formats you need, it has an intuitive interface that allows you to easily access the menus and it includes a spell checking function and an advanced video preview feature... (more)

The program works with the following extensions: js, dat, rt, s2k, smi, aqt, jss, psb, srf, sbt, son, ssa, asc, stp, tts, ass, vkt, srt, vsf, lrc, zeg, dks, sub, ovr, sst, pjs, stl, ssts and sami

.JSS extension is also supported by the following programs:

21st Jigsaw Puzzle

21st Jigsaw Puzzle JigWin v3 jigsaw files

21st Jigsaw Puzzle is a great puzzle game with lots of images to play with.
Jigsaws Galore

Jigsaws Galore Jigsaws Galore jigsaw files

A well-designed jigsaw puzzle game that is approriate for all ages.