Featured Offers
Promote Your SaaS
Put your product right in front of decision-makers and digital creators. Click here to check our affordable sponsorship plans.
Top Competitors to Consider
Put your product right in front of decision-makers and digital creators. Click here to check our affordable sponsorship plans.
#2 FreeSWITCH
Scalable open‑source telephony platform supporting voice, video, and chat with a modular architecture and extensive codec support.
#3 3CX
Commercial IP‑PBX with a web‑based management console, built‑in video conferencing, and native integration with Microsoft Teams and CRM systems.
#4 Kamailio
High‑performance SIP server designed for large‑scale carrier‑grade deployments, offering routing, load‑balancing, and security features.
#5 OpenSIPS
Feature‑rich SIP proxy and registrar with advanced routing, NAT traversal, and real‑time analytics for carrier and enterprise use.
#6 FusionPBX
Web‑based GUI for FreeSWITCH that turns it into a full‑featured multi‑tenant PBX, complete with call routing, voicemail, and reporting.
#7 Elastix
All‑in‑one communications suite (now based on 3CX) that bundles PBX, email, instant messaging, and fax into a single platform.
Hardware‑based IP PBX appliances offering SIP trunking, auto‑attendant, and integrated call‑center modules for SMBs.
#9 RingCentral
Cloud‑native unified communications platform delivering voice, video, messaging, and integrations with popular business apps.
#10 Zoom Phone
Enterprise‑grade cloud phone system that extends Zoom Meetings with call handling, voicemail, and global PSTN connectivity.
Enterprise‑class IP telephony solution offering robust call control, video, and collaboration features with extensive hardware support.
Integrated voice service within Microsoft Teams, providing PBX capabilities, call queues, and direct routing to PSTN carriers.
Cloud‑based business phone system with SIP trunking, mobile/desktop apps, and CRM integrations.
#14 Jitsi Meet
Open‑source video‑conferencing platform that also supports SIP calling, allowing voice calls directly from the browser.
#15 Linphone
Free SIP client and SDK for desktop, mobile, and embedded devices, supporting audio/video calls and messaging.
#16 SipXcom
Enterprise‑grade open‑source SIP communications suite offering PBX, voicemail, conferencing, and presence.
#17 Wazo
Open‑source telephony platform built on Asterisk, providing a modern web UI, APIs, and multi‑tenant capabilities.
Cloud communications suite with voice, video, chat, and contact‑center features, plus analytics and global PSTN access.
#19 Nextiva
Business VoIP service offering unlimited calling, auto‑attendant, call analytics, and integrated CRM tools.
#20 Avaya IP Office
Hybrid PBX solution that blends on‑premise hardware with cloud services for voice, video, and collaboration.
Hosted VoIP platform delivering PBX features, call‑center modules, and unified communications with mobile apps.