---
lang: en
title: Proton vs Quo (formerly OpenPhone)
canonical: "https://saasspecs.com/proton-vs-quo/"
hvce_version: 1
tenant: saasspecs
slug: proton-vs-quo
record_kind: comparison
content_sha256: 59f9f4b95600dd067f927dab630686c678a86daf28f4bd51df81f86cec63f860
indexed_at: "2026-07-05T09:03:45.274Z"
license: citation-free
entities:
  -
    role: a
    slug: proton
    name: Proton
    type: Thing
    profile_url: "https://saasspecs.com/item/proton/?format=md"
  -
    role: b
    slug: quo
    name: Quo (formerly OpenPhone)
    type: Thing
    profile_url: "https://saasspecs.com/item/quo/?format=md"
---
# Proton vs Quo (formerly OpenPhone)

## Pair

- **A**: Proton
- **B**: Quo (formerly OpenPhone)

## Entity A

- **Title**: [Proton](https://saasspecs.com/item/proton/?format=md)
- **Deployment Link**: [Deploy Proton Stack Layer](https://partnerstack.com/placeholder/proton)

### Summary

Proton is a secure collaboration platform offering encrypted email, calendar, and document storage.

### Description

Proton provides end-to-end encrypted productivity tools including email, calendar, file storage, and document editing. It's designed for privacy-conscious professionals, businesses, and organizations that require secure communication and data protection without compromising on collaboration features.

### Attributes

- **Free Plan**: Yes
- **Starting Price (Paid)**: 4.99 USD/mo
- **Free Storage**: 500 MB
- **End-to-End Encryption**: Yes
- **Max Users (Business Plan)**: Unlimited
- **Calendar Sharing**: Yes

## Entity B

- **Title**: [Quo (formerly OpenPhone)](https://saasspecs.com/item/quo/?format=md)
- **Deployment Link**: [Deploy Quo (formerly OpenPhone) Stack Layer](https://partnerstack.com/placeholder/quo)

### Summary

Cloud-based phone system with business communications, team collaboration, and call management features.

### Description

Quo (formerly OpenPhone) is a cloud communications platform that provides business phone numbers, calling, texting, and team messaging capabilities. It's designed for small businesses, startups, and remote teams who need a unified communication system without traditional phone infrastructure.

### Attributes

- **Free Plan**: Yes
- **Starting Price**: 15 USD/mo
- **Team Members**: Unlimited
- **Phone Numbers**: Multiple
- **SMS Capability**: Yes
- **Call Recording**: Yes

## Comparison context

This comparison covers the following catalog entities:

- [Proton](https://saasspecs.com/item/proton/?format=md) (a)
- [Quo (formerly OpenPhone)](https://saasspecs.com/item/quo/?format=md) (b)