Replit

Replit, from Replit. Building and hosting a small app in the browser, with an AI agent doing the setup.

What it does well

• A working prototype of an idea in an afternoon
• Learning to code without installing anything
• Sharing a runnable project with a class or team

What it does poorly

• Apps that handle sensitive data
• Large codebases
• Learning fundamentals if the agent writes everything

What makes it different

Editor, runtime, database and hosting in one browser tab, and Replit Agent can build and deploy an app from a description.

Quick start

1. Describe a small app to Replit Agent, like a study-group sign-up page.
2. Read the plan before approving it.
3. Test the app, then ask the agent to explain one file line by line.
4. Change one feature yourself, by hand.

Strengths and limits

• Strength: Zero setup
• Strength: Instant sharing
• Strength: Agent handles boilerplate
• Limit: Agent usage costs add up
• Limit: Easy to ship code you don't understand

Privacy

Public Repls are visible to anyone. Keep secrets in the Secrets tab, never in code.

Academic integrity

In programming courses, agent-written code usually needs disclosure or isn't allowed.