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!
AssemblyAI
Verified
Transcription
Speech-to-text API with real-time transcription, speaker detection, and audio understanding for developers
AgentVoice
Verified
Call Answering
AI voice agents that handle phone calls, schedule appointments, update CRMs, and automate workflows without human intervention.
Klearcom
Verified
Call Answering
Automated IVR testing tool — map call flows, test audio quality, and validate speech recognition in over 100 countries.
VOICEPLUG
Verified
Call Answering
Voice AI system for restaurants — automates phone, drive-thru, and kiosk ordering to capture every call and boost sales.
Yobi
Call Answering
AI voice agents that answer calls, book appointments, and handle customer conversations 24/7 in multiple languages
Gridspace
Verified
Call Answering
Enterprise-grade conversational AI platform for building and managing voice agents in contact centers.
Callr
Verified
Voice Assistants
API platform for voice and SMS — build AI Voice Agents, capture conversation data, and integrate with your CRM.
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.
ForEva
Verified
Call Answering
Voice AI for restaurants — answers calls, takes orders 24/7, and integrates with your POS system.
Callab AI
Verified
Call Answering
AI voice agents that make human-like phone calls for call centers, debt collection, healthcare, and real estate.
vocode
Voice Assistants
Open source library for building hyperrealistic voice AI agents that can have natural phone conversations
PrankGPT
Verified
Voice Assistants
AI prank call generator — enter a phone number, choose a voice, and let AI handle the hilarious conversation
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.
Ultravox.ai
Verified
Voice Assistants
Build real-time, conversational voice AI agents with a speech-native model that avoids slow text transcription.
Ringable
Verified
Call Answering
AI voice agents for phone calls — handles appointment booking, Q&A, and call routing automatically
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.
Bolna
Verified
Call Answering
Voice AI platform for creating multilingual, human-like AI agents for customer support, sales, and recruitment calls.
Altnativ
Verified
Call Answering
AI voice agents for customer support — answer calls, resolve queries, and route calls 24/7 in multiple languages.
VideoTranslator.ai
Verified
Live translations
AI tool for real-time multilingual conversation translation, transcription, and summarization.
Play AI
Verified
Voice Assistants
Real-time voice AI platform — create human-like voice agents for customer service, healthcare, and business applications
EHVA.ai
Verified
Call Answering
Conversational phone AI for businesses — handles customer calls, sales, and support 24/7 at about 9 cents per minute.
Mihup
Verified
Voice Assistants
AI speech analytics for contact centers — analyzes 100% of customer calls to improve sales, CX, and compliance.