Jive offers VoIP, video conferencing, and contact center tools and services. Monthly VoIP fees range from $19.95–$29.95/user for up to 50+ users.
Ooma is a business VoIP service provider that lets you manage calls, collaborate with colleagues, and more. Monthly fees start at $ 19.95 per user.
Nextiva is a cloud-based business VoIP provider that lets users manage and track all their client calls. Its monthly fees start at $21.95 per user.
Vonage is a VoIP provider that offers business phone systems, contact centers, communications APIs, and more. Monthly fees start at $19.99 per line.
Freshcaller is a PBX and VoIP platform that lets you set up your call center without expensive phone hardware. Monthly fees range from $0–$75/agent.
PhonePower is a telecommunications company that provides cloud PBX and VoIP services. Its fees range from $19.95 to $49.95 when billed monthly.
Viber is a communication and VoIP app that allows you to make and receive audio and video calls. Viber-to-Viber calls are free of charge.
MightyCall is a VoIP provider that offers a cloud-based business phone system for small businesses. Its monthly fees range from $19.99 to $99.99.
RingOver is a VoIP provider that allows you to manage calls from your computer or mobile app via the internet. Monthly fees cost €24 or €49/user.
MicroSIP is a free and open-source VoIP software (which is based on the PJSIP stack), designed for Windows operating systems.
UniTel Voice is a VoIP provider that allows you to connect your phone numbers and devices to its virtual phone system. Monthly fees start at $9.99.
iPlum is a VoIP provider that offers mobile lines with toll-free, U.S., and Canada phone numbers. Its monthly fees range from $4.99 to $19.99/user.