# Web browser

Concept · [Technical basics](https://ecosystem.samcarlton.com/technical)

Also called: browser, browsers, internet browser, web browsers

The app people use to open websites and [web apps](https://ecosystem.samcarlton.com/web-app-mobile-app), such as [Chrome](https://ecosystem.samcarlton.com/chrome) or [Safari](https://ecosystem.samcarlton.com/safari). A web product has to work in the browsers its customers use.

**For example:** Before launch, a [founder](https://ecosystem.samcarlton.com/founder) opens the signup page in [Chrome](https://ecosystem.samcarlton.com/chrome), [Safari](https://ecosystem.samcarlton.com/safari) and a phone browser to check that it looks right in each.

## Connects to (10)

- [Front end](https://ecosystem.samcarlton.com/front-end): The part of an app or website that people see and tap, running in their browser or on their phone.
- [Web app vs mobile app](https://ecosystem.samcarlton.com/web-app-mobile-app): A web app runs in a browser at a web address, on any device.
- [Google Chrome](https://ecosystem.samcarlton.com/chrome): Google's web browser, the most widely used one.
- [Safari](https://ecosystem.samcarlton.com/safari): Apple's web browser, built into iPhones, iPads and Macs.
- [Testing](https://ecosystem.samcarlton.com/testing): Checking that software does what it should, before your users find the problems for you.
- [JavaScript](https://ecosystem.samcarlton.com/javascript): The programming language that runs in every web browser, and also on servers.
- [Playwright](https://ecosystem.samcarlton.com/playwright): An open-source tool from Microsoft that controls web browsers automatically, used to test that a website works by clicking through it like…
- [Arc](https://ecosystem.samcarlton.com/arc-browser): A web browser made by The Browser Company that organizes tabs in a sidebar and into separate spaces.
- [Dia](https://ecosystem.samcarlton.com/dia): A web browser made by The Browser Company with an AI assistant built in that can read and act on open pages.
- [Zen Browser](https://ecosystem.samcarlton.com/zen-browser): A free, open-source web browser based on Firefox, with vertical tabs and a focus on privacy.

Map view: https://ecosystem.samcarlton.com/web-browser