AWS Cloud9 vs Replit

AWS Cloud9 is a browser-based IDE for writing, running, and debugging code. It combines an editor, debugger, and terminal and supports over 40 programming languages, including JavaScript, Python, PHP, Ruby, Go, and C++. Users can create environments on new EC2 instances or connect existing Linux servers over SSH. EC2 environments include Git, Docker, language runtimes, package managers, and an AWS CLI authenticated with the logged-in user’s permissions. Cloud9 includes tools for creating, editing, running, debugging, and deploying Node.js or Python AWS Lambda functions, with AWS SAM support. IAM users in the same AWS account can collaborate on IDE and command-line sessions. Editor features include auto-completion, code folding, hinting, syntax highlighting, and more than 30 color schemes. Cloud9 has no additional service charge, but EC2 compute, EBS storage, and other AWS resources are billed at normal rates. EC2 setups create an instance and 8-GB EBS volume, and users remain responsible for patching and backups. Environments can stop automatically after the IDE closes, which may end terminal sessions.

Replit is a software creation platform where users can describe applications in natural language and refine them with an AI agent. The agent works through chat, tests and revises code, and can use a browser to produce reports and address issues. Its cloud development environment supports coding and collaboration in a browser, with automatic package installation and built-in authentication, database, hosting, and monitoring. Replit supports websites, mobile projects, designs, slides, animations, data visualizations, 3D, games, documents, and spreadsheets, with more than 100 integrations. The free Starter plan includes daily usage, but limits publishing to one live project and running one background task at a time. Replit Core costs $18 per month billed annually, and Pro costs $90 per month billed annually. Pro supports up to 15 collaborators and 50 viewers, and includes database rollback for up to 28 days. Replit is available on Android, iOS, Linux, macOS, Windows, and web. Its mobile apps support building, sharing, and publishing web apps; native iOS development uses the web version with Expo Go previews.