Curated list of the best free (or freemium) VoIP solutions that natively integrate with popular CRM platforms, enabling seamless call logging, click‑to‑dial, and contact synchronization.
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Free VoIP add‑on for Zoho CRM that logs inbound/outbound calls, supports click‑to‑dial, and provides real‑time call analytics.
Integrated calling within HubSpot CRM (free tier) offering call recording, automatic logging, and contact enrichment.
Bitrix24’s free tier includes built‑in VoIP with CRM sync, click‑to‑dial, call history, and lead capture directly from calls.
Freshworks’ cloud‑based phone system offers a free tier with CRM integration for Freshsales, call routing, and basic analytics.
On‑premises PBX with a free edition that integrates with Salesforce, HubSpot, Zoho, and Microsoft Dynamics via plugins.
Highly customizable open‑source PBX; can be linked to any CRM (e.g., SuiteCRM, Odoo) through community modules and APIs.
Free, web‑based GUI for Asterisk that offers ready‑made CRM connectors for SugarCRM, SuiteCRM, and Zoho.
Open‑source video/voice platform with SIP support; can be integrated into CRMs via custom webhook scripts for call logging.
Free SIP client with SDKs for iOS, Android, and web; developers can embed it into CRM portals for click‑to‑dial functionality.
Built‑in VoIP module in Odoo’s free Community edition; logs calls, records conversations, and syncs with Odoo CRM leads.
Free integration that connects Vtiger CRM with any SIP‑based VoIP provider, enabling automatic call logging and click‑to‑dial.
Offers a free plan for small teams with basic calling and native integration with HubSpot, Salesforce, and Zendesk.
Free Google Voice numbers can be linked to Salesforce and HubSpot via third‑party connectors for call logging.
While not permanently free, the 30‑day trial provides full CRM integrations (Salesforce, HubSpot, Zoho) for evaluation.
Provides a free tier with up to 5 users, click‑to‑dial, and native integrations for HubSpot, Zoho, and Pipedrive.
30‑day free trial includes full CRM sync (Salesforce, HubSpot, Zoho) and call analytics for small teams.
Offers a 14‑day free trial with built‑in CRM integrations, call recording, and real‑time dashboards.
Free softphone supporting SIP/VoIP; can be paired with CRM systems via API scripts for click‑to‑dial and call logging.
Provides a limited free tier for startups with CRM connectors for Salesforce and Zoho.