ASL Core videos on advanced discipline-related terminology
ASL Deafined ASL videos (free 3-day trial)
ASL Dictionary & Inflection Guide (NTID's online ASL dictionary)
ASL Fingerspelling receptive practice
ASL Literature Resource (ASL vocabulary related to literature)
ASLized videos in ASL designed to foster the integration of American Sign Language (ASL) educational research into visual media and literacy.
ASL Nook has videos of adorable children signing
ASL STEM Forum wiki where deaf people contribute videos of ASL signs for science, engineering, and math technical vocabulary.
ASL THAT Facebook group with videos discussing sign semantics
ASL University (online ASL dictionary)
Atomic Hands STEM videos
Camp Mark 7 deaf kids and staff sign Pharrell Williams' "Happy" in ASL
Council de Manos ASL videos
Dack Virnig's YouTube videos
Deaf Doc (online medical ASL dictionary)
English By Eye (English words with multiple ASL translations)
Food Safety videos in ASL
Garrett Bose vocabulary and grammar videos
Handspeak ASL dictionary
Rosa Lee Timm's YouTube videos
schertzart's YouTube channel
Signing Savvy online ASL dictionary
STEM Video Dictionary (ASL videos of math and science terms)
Twas the Night Before Christmas performed by Patrick Graybill
Vocabulary Builders in ASL: signs for technical vocabulary from the Captioned Media Program
Youglish ASL: type in the word you want to see a sign for and it will scan all YouTube videos for that sign