Cloud Provider Recommendations 

• Vultr ($5/month using CentOS 7 or Debian 10 image; +$1.00/mo. with backups)
• Digital Ocean ($5/month using CentOS 7 or Debian 10 image; +$1.00/mo. with backups)
• CrownCloud ($25/year using Incredible PBX image with Debian 10 or CentOS 7; free snapshot)
• HotlineServers (~$3/month using Coupon Code: voip2021; +$0.80/mo. daily offsite backups)
• OVH ($3.50/mo. using CentOS 7 or Debian 10; +$1.10/mo. with snapshot)

Non-Production Cloud Alternatives 

• Google Cloud (using CentOS 7 or Debian 10 image)
• Cloud At Cost (using CentOS 7.5 or Debian 10 image)

Virtual Machine Platform Images 

• VirtualBox (Debian 10)
• VirtualBox (CentOS 7)
• VMware ESXi (CentOS 7)

VoIP Provider Recommendations 

Other VoIP Provider Alternatives 

• Anveo Direct
• BulkVS
• Callcentric
• FreeVoipDeal/Betamax
• Localphone
• Nexmo/Vonage
• RingCentral
• SignalWire
• Sip2Sip.info
• V1VoIP

Softphone Provider Recommendations 

• Clearly Anywhere
• Acrobits Groundwire
• SessionTalk Pro for iOS and Android
• Linphone

Mobile Cellphone Extensions for Asterisk 

• GTI Global