FreeSWITCH might be a bit more popular than Telzio. We know about 1 link to it since March 2021 and only 1 link to Telzio. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Telzio is a cloud based vendor you could consider. Very affordable, mobile app, supports voice, SMS and virtual faxhttps://telzio.com. Source: over 1 year ago
I thought FREESwitch was the new hotness in PBX software? https://freeswitch.com/. - Source: Hacker News / over 2 years ago
Line2 - Line2 adds a second phone number or complete cloud business phone system to smartphones & computers that's robust yet affordable. Buy online or get a custom quote.
Asterisk - An open source telephony switching and private branch exchange service for Linux.
Grasshopper - Grasshopper enables entrepreneurs to build a virtual office that connects callers to employees, wherever they are.
freepbx - FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
FusionPBX - FusionPBX is an open source FreeSWITCH GUI.