CloudSIP

At a glance

• Editor score
  5.1 / 10
• Pricing
  Pricing on request
• Best for
  Browser calling integrated with CRM workflows
• Free plan
  No
• Facts checked
  16 Sep 2026

• Where it wins

  • Runs in a browser with WebRTC and secure WebSocket SIP
  • Supports recording, voicemail, transfers, DTMF, and multi-line calls
  • Connects with Asterisk, CONNXTA systems, and third-party CRM tools

• Where it doesn't

  • Pricing is provided on request rather than through published plans
  • Requires a compatible SIP server or CONNXTA Cloud PBX
  • Calling is delivered through the web platform rather than native apps

Our verdict on CloudSIP

CloudSIP is a browser-based WebRTC SIP softphone for business users, remote teams, and agents. It supports inbound and outbound calls through a compatible SIP server or CONNXTA Cloud PBX, avoiding a traditional softphone installation. The web application includes contacts, call history, click-to-call from web pages, voicemail access and playback, audio device settings, and core controls for hold, mute, transfer, and DTMF. Its open-source frontend is designed as a static web application that can be deployed over HTTPS, making it a focused option for teams that want browser calling connected to existing telephony infrastructure.

CRM and telephony connectivity are central to CloudSIP's fit. It supports Asterisk, CONNXTA Cloud PBX, CONNXTA CRM, and third-party CRM tools, with CRM field auto-population and click-to-call helping connect calling activity to browser-based workflows. Multi-line calling, SIP over secure WebSocket, and WebRTC calling suit agents and remote teams that need more than basic one-to-one browser calls. Local browser recording uses IndexedDB persistence, while call history and contacts keep routine calling information available in the same interface.

CloudSIP is priced through contact sales, and the published pricing information does not present a free plan. CONNXTA's pricing page mentions short proof-of-concept trials for SIP trunking and Cloud PBX, while CloudSIP itself is positioned around compatible SIP infrastructure. That makes it a sensible choice for organizations already using Asterisk, CONNXTA services, or another supported CRM and telephony setup. Teams seeking a standalone mobile or desktop calling application, or a self-serve free tier, should choose a different softphone approach.

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CloudSIP pricing

CloudSIP fact sheet

CloudSIP integrations

CloudSIP lists 4 integrations on its own site.

• Asterisk
• CONNXTA Cloud PBX
• CONNXTA CRM
• Third-party CRM tools

Alternatives to CloudSIP

• LinphoneA versatile free softphone for SIP calling across desktop, mobile, and web platforms.9.1
• ZoiperA broad, SIP-focused softphone with strong platform coverage and flexible licensing.8.8
• PhonerLiteA Windows-only SIP softphone with recording, encryption, scripting, and Whisper transcription.8.3

See all CloudSIP alternatives →

Featured on iTechGuides

CloudSIP is listed in our Softphone Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

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Last updated 28 Sep 2026 · How we research and update