ReplitReviewed July 24, 2019
Disclaimer: Replit is a sponsor of the Future of Coding.
Repl.it is an zero-setup, online IDE for over 30 programming languages. It began as a code playground and REPL, compiling languages to the browser via Emscripten, but is now a full development environment that runs each language on a Docker container. It is used for everything from deploying web servers, to building games, and training ML models. It's particularly popular in education and with teenage hackers in part due to its lively forum.
- 👍 Instant, online IDE. No install or customization necessary
- 👍 Feels like "real coding" for kids who think they are "too old for Scratch"
- 👍 Lively forum
- 👍👎 Runs 30+ languages, but doesn’t have amazing support for any
- 👎 Slow iteration cycle. No auto run. Server restart on any change
The above video creates an Express app that counts the number of times the page was loaded since the server starts. It demonstrates:
- creating a new Express app in one click online
- editing the code in an online IDE
- running the app, including installing the npm packages
- viewing the web app output without leaving the same page
Detailed revision history
Replit records detailed revision history for every set of changes, allowing easy rollbacks.
Replit Talk, the online community, is one of the biggest draws for teenage hackers. They collaborate, give and receive help, and compete in "gam jam" competitions.
Popular with schools, the Replit classrooms features autograding via unit tests, tracking student progress, reusable assignments, and open-source classes.
Paid accounts have private repls, and faster machines (4x CPU and 2GB RAM), and 10GB total storage.
- Hacker: $7/month
- Non profit or public school class: free
- For-profit classroom: $1/student/month
- Enterprise: custom pricing
- Customize the syntax linting suggestions
- Autocomplete suggestions for methods or properties on objects
- Evaluate part of a file
- Run a single file
- Open a second repl if one is running a process
- Use REPL on web app projects
- Better colors for the console
- JSON exploration in the console
Past wishes that were granted:
- Google docs style collaborative editing