What is REPL software?

Repl.it is an online integrated development environment (IDE) and code editor that allows developers to write, test, and deploy code from one platform. It is a cloud-based platform, which means that all of its features and tools are accessible from any device with an internet connection. Repl.it supports multiple programming languages and frameworks, making it a versatile platform for developers to work on a variety of projects. Repl.it also offers features like real-time collaboration, live sharing, and interactive shells for efficient debugging. The platform has a free plan and several paid subscription plans that offer additional features and resources.

It's short for read-eval-print-loop. It's a code testing environment that allows for the quick running of snippets of code. Replit takes that concept and expands it to a full fledged IDE.