All Vendors

Resemble AI

Speech-to-Text / Text-to-Speech

Open-source text-to-speech models for production-grade voice applications

Responsible AI Institute

Compliance & Certification

Non-profit issuing AI assurance badges and certification against global standards

USA

Retell AI

Voice AI & Speech Platforms

AI Voice Agent Platform for Phone Call Automation

San Francisco, USA

Reveal

eDiscovery & Investigations

AI-driven eDiscovery platform; acquired Logikcull and IPRO (2023)

USA

Roark

Conversational & Voice QA

Observability and testing platform for voice AI agents

USA

Robin AI

Contract Drafting & CLM

AI-powered contract software for legal teams to review and draft faster

UK

Roof AI

Conversational AI Platforms - Enterprise

AI-powered lead conversion platform that transforms real estate brokerage websites into 24/7 interactive sales engines.

Certification programs for conversational AI design

Sabio

Services & Advisory

Expert CX services partner leveraging AI and technology to transform customer interactions

Saidot

Governance & Model Risk

Agent-first graph-based AI governance platform with 260+ risk controls

Helsinki, Finland

Sarj.ai

Agentic AI Platforms

Enterprise AI automation platform for customer conversations and operations in the Middle East

Saudi Arabia

Scytale

Compliance & Governance Consultants

Compliance automation platform for various regulatory standards

Semeris

Contract Drafting & CLM

AI document analysis for finance legal agreements and structured products

UK

Generative conversational AI with zero-code bot builder

Sensely

Conversational AI Platforms - Enterprise

Empathy-driven conversational AI platform for healthcare to improve member engagement and lower costs

Sesame

Agentic AI Platforms

Creating lifelike computer companions with natural voice interaction

Shaip

Services & Advisory

End-to-end AI data and generative AI platforms for training, evaluating, and scaling reliable AI models

Shuttle

Developer APIs & Frameworks

The payments layer that enables platforms and AI agents to create flexible payment experiences

London, United Kingdom

Sierra

Conversational AI Platforms - Enterprise

AI-powered customer experience platform that deploys conversational agents across any channel to transform customer service

San Francisco, USA

Sinch

Developer APIs & Frameworks

Cloud communications platform providing messaging, voice, email, and verification APIs for customer engagement at scale

Sipfront

Conversational & Voice QA

End-to-end quality and compliance assurance for enterprise voice AI

Vienna, Austria

SiteSpeak AI

Conversational AI Platforms - SMB

AI customer service chatbot that automates support with instant, accurate answers

SleekFlow

Conversational AI Platforms - Enterprise

Omnichannel conversational AI platform with teams of AI agents that convert leads into revenue across multiple channels