fit-file-parser
Parse your .FIT files easily, directly from JS (Garmin, Polar, Suunto)
@sports-alliance/sports-lib
A Library to for importing / exporting and processing GPX, TCX, FIT and JSON files from services such as Strava, Movescount, Garmin, Polar etc
garmin-connect
Makes it simple to interface with Garmin Connect to get or set any data point