Mailtrap is a professional email testing platform that provides a secure virtual SMTP sandbox to capture dev environment emails, preventing accidental sending to real recipients and helping teams debug email delivery.
Postman, founded in 2014 and headquartered in San Francisco, is an API development platform used by 30M+ developers, covering design, debugging, testing, documentation and monitoring.
Bruno is an emerging open-source API client created by Anoop M D in 2022/2023, built with an offline-first, Git-friendly philosophy.
Founded in 2015 in London, UK, Mailosaur is an automated email and SMS testing platform for developers. It provides dedicated test inboxes, Spam Score analysis, HTML/CSS rendering validation, and API integration to automate email and SMS verification in CI/CD pipelines.
Insomnia is a popular open-source API client, founded in 2016 by Gregory Schier, acquired by Kong in 2022, focused on API design, debugging, and testing.