I made a thing! Here it is, pretty self-explanatory: https://hl1sfx.com/
I re-watch Freeman's Mind occasionally, pretty much as background content while I work (Ross has a soothing voice when he's being a psychopath), and recently I wanted to edit a short video with some half life sound effects, but working through the actual .wav files was a nightmare, hence this.
My absolute favorite thing is, I transcribed all the clips, so anything with dialogue in it is searchable by dialogue :D
Let me know if you try this out and have any thoughts or issues!