OpenPhone (now called Quo) is a shared business phone and inbox that gives teams one place for every call, text, and customer. The modern business phone system comes with powerful calling, messaging, and a lightweight CRM.

OpenPhone provides one shared number and inbox for calls, texts, and voicemails, allowing teams to reply faster, stay aligned, and capture more opportunities 24/7. OpenPhone AI automatically summarizes calls and intelligently suggests next steps. Users can dial and receive phone calls with their web browser without needing a mobile phone or landline. The service offers shared numbers, phone menus, and call recording. Plans start at $15 per user/month with an average 4.7 stars and over 2,700+ reviews, making it the #1 business phone in customer satisfaction on G2.
Shared business phone for startups & small businesses
G2 Rating
Starting Price
Used By Count
Voice AI platform with flexible per-minute pricing
Starting Price
Retell AI is a voice AI platform offering usage-based pricing at $0.07 per minute without mandatory base subscriptions. It provides flexible configuration of voice engines, LLM models, and telephony components.
Cloud communications platform for sales dialers and calling
Founded
Twilio is a cloud-based communications platform providing auto-dialer and softphone capabilities for sales teams. Enables click-to-call functionality integrated with CRMs like Salesforce for seamless call logging and voicemail drops.
Cloud phone system for SMBs with predictive and power dialer
G2 Rating
Starting Price
MightyCall is a cloud-based business phone system designed for small and medium businesses. It offers multiple dialer options including predictive, progressive (power), and preview dialers with seamless CRM integration.