There are posts on SN for most of those companies. Below is a subset of those:

LightningEscrow API Demo Video - Beta V1
#14174
https://www.youtube.com/watch?v=OufAyoxfH9M

Michael Bumann & Moritz Kaminski on Alby & Improving Lightning Payments | The Kevin Rooke Show | E28
#14717
https://www.youtube.com/watch?v=07HAcQDDAmo

Show SN: Vida, a way for anyone to contact you as long as they pay you bitcoin in real-time!
#17789
https://vida.live

Moon - Shop Online with Cryptocurrency
#3360
https://paywithmoon.com