YATE

YATE (Yet Another Turtle Editor) is a fork of YASQE (Yet Another
SPARQL Query Editor) that is part of the the YASGUI suite of SPARQL tools. For more information about YATE, its features,
and a HOWTO for including it in your own web site, visit https://perfectkb.github.io/yate

Available as an npm module perfectkb-yate