PubNub
Backend-as-a-Service
Real-time communication platform providing messaging, presence, and push notifications with global data stream network.
Events and actionsReal time analytics
Price$98+ / month
Starting price: at the category median.Alternatives to Socket.IO
- 1Communication APIs, Backend-as-a-Service
- 2Communication APIs
Daily
Communication APIs
Daily is a WebRTC-based video and audio API platform for developers building real-time communication features into applications.
Voice AI agent deployment and orchestrationSip and pstn telephony integrationMulti provider AI service integrationPriceUsage-based
- 3Communication APIs
Kamailio
Communication APIs
Open-source SIP server providing VoIP, WebRTC, and real-time communication services with high scalability and flexible routing.
Load balancing and failoverTls and secure communication - 4Communication APIs
Stream
Communication APIs
Stream provides APIs for building scalable chat messaging and activity feeds in applications, powering real-time communication for millions of end users.
Multi tenancy and team management - 5Communication APIs, Event-Driven Architecture
Mercure
Communication APIs
Open protocol and reference implementation for real-time communications using Server-Sent Events for push updates.
Free planFree trialTiered plansMessage Queue PlatformsEvent-Driven Architecture - 6Communication APIs
Telnyx
Communication APIs
Real-time communications API platform for voice, messaging, video, wireless, and AI applications.
Free trialSOC 2ISO 27001PCI DSSHIPAAGDPRPriceUsage-based
- 7Communication APIs
Agora
Communication APIs
Agora provides real-time voice and video communication APIs used by developers to build interactive live streaming, video calling, and messaging features into applications.
Conversational AI engine with voice interactionVoice AI agent design and deploymentReal time speech to text transcription - 8Communication APIs
Poised
AI Meeting Assistants
AI communication coach providing real-time feedback during online meetings on speaking skills.
Meeting analytics and trend analysisFacial expression and eye contact analysisMeeting moment capture and key insightsPrice$19 / month
Price position: below the category median. - 9Communication APIs
Nylas
Communication APIs
Email, calendar, and contacts API platform for embedding communication features into applications.
Free planFree trialSOC 2ISO 27001GDPRHIPAAPrice$5+ / month
- 10Communication APIs
D7 Networks
Communication APIs
Enterprise cloud communication platform offering SMS, voice, and verification APIs across global networks.
Free planFree trialISO 27001Usage-basedCPaaS (Communications Platform as a Service)WhatsApp MarketingPriceUsage-based
