SIPERB is a SIP to WebRTC Proxy, allowing you to make and receive calls from your PBX (like Asterisk) to your web browser.
Ghanshyam Katriya
http://www.techextension.com/
mustafamercanli
vitekey
https://jambonz.org
Zoiper
Zadarma
TelTel.io
https://sipde.net
Nasim Telecom
http://bitree.ru/
Denis Streltsov