Metars:
Metars
Temperatures [Nationwide]
Temperatures & Heat Index >=103 [Nationwide]
Heat Index [Nationwide]
Dew Points [Nationwide]
Wind Speeds [Nationwide]
Wind Gusts [Nationwide]

Reports:
Local Storm Reports [Last 4 hours]
SPC Reports [Last 4 hours]

SPC:
SPC Day 1 Outlook Polygon
SPC Day 1 Outlook Lines [Customize]
SPC Watch Polygons [Customize]
SPC Watch Lines [Customize]
SPC Mesoscale Discussion Lines [Customize]
SPC Day 1 Tornado Probability
SPC Day 1 Wind Probability
SPC Day 1 Hail Probability

Others:
NWS Alerts Lines (Non-Marine)
You can modify the end of the alert lines link with this one parameter: ?maxDistance=250
NWS Alerts Polygons (Non-Marine)
You can modify the end of the alert polygon link with these two parameters: ?maxDistance=250&icons=y
NWS Alerts Marine Lines
You can modify the end of the marine alert lines link with this one parameter: ?maxDistance=250
NWS Alerts Marine Polygons
You can modify the end of the marine polygon link with these two parameters: ?maxDistance=250&icons=y
Radars Down (Level 2)
Radar Alarms (Last 48 hours)

Experimental:
ADS-B St. Louis (KLSX)
ADS-B Tallahassee, FL (KTLH)

Ken True's original placefiles:
https://saratoga-weather.org/grlevelx-placefiles.php
Credits:
These placefiles are hosted by Dan Paulat @ Supercell Wx. Feel free to join the Supercell Wx development discord!
Some of these placfiles were entirely created by WXFanatic
The METAR/Advisory placefiles are either originals or forks of Ken True's METAR placefiles and NWS Alerts placefile. Forks here and here