Communication APIs
Omnichannel communications platform with SMS, WhatsApp, voice, email, and CPaaS for global enterprises.
Usage-based · Free trialUp to $50k
20061,000+Vodnjan, Croatia
Communication APIs
1 deals
APIs for adding voice, video, and messaging capabilities to applications.
Push Notification Platforms
Simple HTTP-based pub/sub notification service for sending push notifications to phones and desktops.
Tiered plans · Free plan
2021Solo / freelancerRemote
IVR Systems
Open-source communication framework powering IP PBX systems, VoIP gateways, and conference servers used by millions worldwide.
Free plan
199951-200Williamsville, NY
API Design Tools
Agora provides real-time voice and video communication APIs used by developers to build interactive live streaming, video calling, and messaging features into applications.
Custom quote
2014201-500Santa Clara, California
Government Technology
Document issuance APIs for Indian government KYC.
Free plan
2015201-500New Delhi, India
N
CPaaS (Communications Platform as a Service)
Communications APIs platform from Vonage for voice, messaging, and verify
$500-$5k/month
20101,000+Holmdel, NJ
Business Messaging
Ghanaian messaging and payments platform offering SMS, mobile money APIs, and super-app commerce for African businesses.
Pay-per-message
2005101-250Accra, Ghana
Team Messaging
Low-latency video and audio APIs and SDKs for adding interactive meetings and live streaming to any app.
Usage-based · Free trial
202011-50Surat, India
Developer Experience Platforms
APIs from Dolby for video, voice, streaming, and media processing with high-fidelity audio enhancement.
Custom quote
20201,000+San Francisco, CA
Workflow Automation
Integuru transforms any website into a reliable, real-time, low-latency API without RPA, processing millions of API calls monthly for data extraction and workflow automation.
Tiered plans · Free plan
20241-10San Francisco, California
Developer APIs
Video conferencing infrastructure platform for building live audio-video experiences with interactive features.
Usage-based · Free plan
202051-200Bangalore, India
Communication APIs
Digital newsletter platform for K-12 educators with templates, analytics, and translation.
Tiered plans · Free trial
2011Solo / freelancerDallas, TX
Backend-as-a-Service
Real-time communication platform providing messaging, presence, and push notifications with global data stream network.
Tiered plans · Free plan
2010201-500San Francisco, CA
Communication APIs
Voice and messaging APIs with global telecom coverage.
Pay-as-you-go
1990501-1,000Newark, NJ
Communication APIs
Real-time communications API platform for voice, messaging, video, wireless, and AI applications.
Usage-based · Free trial
2009201-500Chicago, IL
Cloud Hosting
Stream provides APIs for building scalable chat messaging and activity feeds in applications, powering real-time communication for millions of end users.
Tiered plans · Free plan
20151-50Amsterdam, Netherlands
Communication APIs
Email, calendar, and contacts API platform for embedding communication features into applications.
Tiered plans · Free plan
20131-50San Francisco, CA
Communication APIs
Video platform with recording, playback, and management APIs for asynchronous video in apps.
Tiered plans · Free plan
201311-50New York, NY
Voice App Development
Automated voice services and IVR for call automation.
Usage-based
200051-100Boston, MA
IVR Systems
Plivo provides cloud voice and messaging APIs for building IVR, call center, and communications applications at competitive pricing.
Usage-based · Free plan
2011201-500Austin, Texas
CPaaS (Communications Platform as a Service)
Open-source SIP server providing VoIP, WebRTC, and real-time communication services with high scalability and flexible routing.
Free · Free plan
20051-10Community Project
Workflow Automation
PostGrid automates direct mail with address verification, template customization, and mail tracking APIs, integrating with CRMs and business platforms for automated workflows.
Usage-based
201851-200Toronto, Canada
Serverless Framework
Open-source web framework for building real-time applications and REST APIs using JavaScript or TypeScript.
Free · Free plan
2014N/A (Community)Remote
CPaaS (Communications Platform as a Service)
Elastic communications platform with voice, video, messaging, and SIP.
Usage-based · Free trial
201751-100Palo Alto, CA
AI Meeting Assistants
AI communication coach providing real-time feedback during online meetings on speaking skills.
Tiered plans · Free plan
201911-50San Francisco, CA
K
Communication APIs
K-12 family engagement software (now part of PowerSchool) focused on attendance interventions.
Custom quote
201211-50New York, NY
Event-Driven Architecture
Open protocol and reference implementation for real-time communications using Server-Sent Events for push updates.
Tiered plans · Free plan
20181-10Lyon, France
Communication APIs
Indian CPaaS platform offering enterprise messaging, blockchain CPaaS, and fraud prevention.
Custom quote
19991,000+Hyderabad, India
Backend-as-a-Service
Library enabling real-time bidirectional event-based communication between browser clients and servers with fallback support.
Free · Free plan
20101-10Remote
Business Messaging
Voice and messaging APIs with direct carrier connections and deliverability.
Usage-based
201311-50Raleigh, NC
CPaaS (Communications Platform as a Service)
Messaging and CPaaS provider by Sinch.
Custom quote
2002201-500Munich, Germany
Document Authentication
Twilio is a cloud communications platform that provides APIs for SMS, voice, video, email, and WhatsApp messaging. It enables developers to embed communication capabilities into applications...
Usage-based · Free trial
20085,000+San Francisco, California
CPaaS (Communications Platform as a Service)
Omnichannel communication platform formerly MessageBird providing messaging, voice, and email APIs.
Tiered plans · Free plan
2011501-1,000Amsterdam, Netherlands
CPaaS (Communications Platform as a Service)
Egyptian CPaaS platform providing SMS, voice and WhatsApp APIs to enterprises across MENA and Africa.
Usage-based · Free trial
20111-50Cairo, Egypt
SMS Marketing
Customer communications cloud powering SMS, MMS, RCS, and WhatsApp messaging for marketing campaigns and transactional notifications at global scale.
Usage-based · Free trial
20081-50Stockholm, Sweden
CPaaS (Communications Platform as a Service)
Indian communication platform offering SMS, voice, email, and WhatsApp APIs for developers.
Tiered plans · Free plan
20091-50Indore, India
CPaaS (Communications Platform as a Service)
European CPaaS provider for SMS and mobile messaging.
Usage-based
20011,000+Oslo, Norway
Cloud Computing
ByteDance's enterprise cloud and AI platform offering recommendations, translation, and CDN APIs. Focused on international markets.
Usage-based · Free plan
20211,000+Singapore
Developer Tools
Daily is a WebRTC-based video and audio API platform for developers building real-time communication features into applications.
Usage-based · Free plan
201651-200San Francisco, California
SMS Marketing
Multi-channel communication platform offering SMS, MMS, email, voice, fax, and direct mail APIs with global coverage and competitive pricing.
Usage-based · Free plan
20131-50Perth, Australia
CPaaS (Communications Platform as a Service)
Global CPaaS with SMS, voice, and Viber messaging APIs.
Free trial
200751-100Limassol, Cyprus
Mobile Backend as a Service
Chat, video, and voice backend APIs for mobile and web.
Tiered plans · Free plan
20101-50San Francisco, CA
Speech AI
AI public speaking and communication coach providing feedback on speech, tone, and delivery.
Free plan
20181-10San Francisco, CA
Push Notification Platforms
Self-hosted push notification service with Android app and web UI for sending and receiving messages.
Free plan
20181-10Remote
T
SMS Marketing
SMS marketing and messaging platform providing API access for transactional and promotional messaging.
Pay-per-use
200551-200Aylesbury, UK
SMS Marketing
Enterprise cloud communications platform providing SMS, voice, WhatsApp, video, and chatbot solutions for banking, healthcare, and retail industries.
Free trial
1999501-1,000Milan, Italy
Voice App Development
Voice AI platform with ultra-low latency conversation APIs for real-time phone agents.
Usage-based
20232-10San Francisco, CA
Employee Communication Platforms
Cloud communication platform from Alcatel Lucent for teams and enterprises
$500-$5k/month
2016201-500Paris, France
Communication APIs
AI public speaking coach providing feedback on presentation skills using speech analysis.
Freemium with paid tiers
20161-10Philadelphia, PA
Communication APIs
LINE's Korean enterprise unit providing messaging APIs, LINE Ads Platform, and official account tools for Korean and Japanese businesses.
Free · Free plan
20111,000+Seoul, South Korea
CPaaS (Communications Platform as a Service)
Global CPaaS voice provider (acquired by Bandwidth) offering coverage in 65+ countries via SIP trunks.
Usage-based
2005250-500Brussels, Belgium
Workflow Automation
Lob provides APIs for automating personalized direct mail at scale with address verification, intelligent delivery, and real-time mail piece tracking for businesses and agencies.
Tiered plans · Free plan
20131-50San Francisco, California
Business Messaging
Nigerian multichannel messaging API enabling African developers and businesses to send SMS, WhatsApp, voice, and email.
Usage-based · Free plan
20211-50Lagos, Nigeria
Unified Communications
Browser-based unified communications platform with WebRTC technology providing sales-focused communication tools for businesses.
Tiered plans
20051-50Tallinn, Estonia
CPaaS (Communications Platform as a Service)
Enterprise cloud communication platform offering SMS, voice, and verification APIs across global networks.
Usage-based · Free plan
200151-200Dubai, UAE
Unified Communications
Vonage, an Ericsson company, provides cloud communications APIs and unified communications solutions enabling businesses to embed voice, video, messaging, and authentication into application...
$19.99-39.99 / user / month
20011,000+Holmdel, New Jersey
Distributed Tracing
High-performance asynchronous messaging library providing sockets for distributed and concurrent applications.
Free · Free plan
20071-10Remote
SMS Marketing
Nigerian messaging and verification APIs powering SMS, email, and WhatsApp communications for African businesses.
Pay-per-message
201751-100Lagos, Nigeria
CPaaS (Communications Platform as a Service)
CPaaS provider for enterprise messaging.
Usage-based
2004501-1,000Mumbai, India
Communication APIs
AI communication coach providing private, real-time feedback on presentations and conversations.
Freemium with paid tiers
202111-50Seattle, WA