system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why are there so many different internet browser and can I make my own?
gpt
So, there are two  different aspects of an internet browser: the user interface and general usage, and the browser "engine" which does the transforming of a webpage to a more computer friendly structure. There are only 3 main engines now: gecko (firefox), blink (chrome, brave, opera, modern edge, etc., and which  is based on webkit) and webkit (safari). You could make your own browser using an existing engine which would take some work, but the biggest codebase is the engine. Making your own engine would take in all likelihood a number of years.