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Charles Proxy vs Sinch Email Mailosaur

People

Charles ProxyAPI Testing Tools

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Price

$50 one-time

API Testing Tools

Annual estimate10 people, entry price

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API Testing Tools

Overview

Focus

API Testing Tools

Product

HTTP proxy and monitor tool enabling developers to view HTTP and SSL traffic between their machine and the internet.

Email and SMS testing for developers.

Website

Headquarters

Remote

London, United Kingdom

Company size

2-10 employees

Founded

2002

2013

Pricing details

Published rate

$50 one-time

Free options

Free trial

Source updated

Oct 29, 2026

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