Voice agents and the speech stack behind them: pick up the phone, understand the caller, book the appointment and write it back to the CRM — alongside the transcription APIs and IVR testing tools developers use to build such systems.
Deepgram
Verified
Voice Assistants
Enterprise Voice AI platform designed for developers building voice-first products using speech-to-text, text-to-speech, or speech-to-speech APIs. Over 200,000 developers build with Deepgram's voice-native foundational models, accessed via APIs or self-managed software. Start building with $200 in free credits!
AgentVoice
Verified
Call Answering
AI voice agents that handle phone calls, schedule appointments, update CRMs, and automate workflows without human intervention.
AssemblyAI
Verified
Transcription
Speech-to-text API with real-time transcription, speaker detection, and audio understanding for developers
Klearcom
Verified
Call Answering
Automated IVR testing tool — map call flows, test audio quality, and validate speech recognition in over 100 countries.
Yobi
Call Answering
AI voice agents that answer calls, book appointments, and handle customer conversations 24/7 in multiple languages
VOICEPLUG
Verified
Call Answering
Voice AI system for restaurants — automates phone, drive-thru, and kiosk ordering to capture every call and boost sales.
Callr
Verified
Voice Assistants
API platform for voice and SMS — build AI Voice Agents, capture conversation data, and integrate with your CRM.
Gridspace
Verified
Call Answering
Enterprise-grade conversational AI platform for building and managing voice agents in contact centers.
ThunderPhone
Verified
Call Answering
AI voice agents that handle inbound and outbound calls with high accuracy, multilingual support, and cost-effectiveness.
rev.ai
Verified
Transcription
High-accuracy speech-to-text API with NLP insights — convert audio/video to transcripts, analyze sentiment, extract topics, and translate content.
Callab AI
Verified
Call Answering
AI voice agents that make human-like phone calls for call centers, debt collection, healthcare, and real estate.
ForEva
Verified
Call Answering
Voice AI for restaurants — answers calls, takes orders 24/7, and integrates with your POS system.
PrankGPT
Verified
Voice Assistants
AI prank call generator — enter a phone number, choose a voice, and let AI handle the hilarious conversation
Futuro AI
Verified
Call Answering
AI phone agent that answers calls, generates leads, and handles customer service with a human-like voice
Boson AI
Verified
Voice Assistants
Develop and deploy AI-powered voice agents for customer support, sales, and other business workflows.
Ultravox.ai
Verified
Voice Assistants
Build real-time, conversational voice AI agents with a speech-native model that avoids slow text transcription.
Symbl.ai
Verified
Audio & Voice
AI platform that analyzes voice, video, and text conversations to extract insights, build AI agents, and provide real-time assistance.
InterMIND
Verified
Live translations
AI meeting platform that translates voice, chat, and documents live so everyone speaks their own language
vocode
Voice Assistants
Open source library for building hyperrealistic voice AI agents that can have natural phone conversations
Ringable
Verified
Call Answering
AI voice agents for phone calls — handles appointment booking, Q&A, and call routing automatically
anturon
Verified
Call Answering
AI voice agent platform for real phone calls — handles conversation, live data lookup, QA scoring, and compliance.
Simple AI Phone Assistant
Verified
Call Answering
Enterprise-ready voice AI phone agents that handle customer calls with human-like conversations 24/7.
NexaVoxa
Verified
Call Answering
Developer platform for building and deploying high-fidelity AI voice agents that handle natural phone conversations for businesses.
Mihup
Verified
Voice Assistants
AI speech analytics for contact centers — analyzes 100% of customer calls to improve sales, CX, and compliance.