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Python Online
What Python Online is
Python Online is a browser-based IDE for writing, running, and hosting Python applications. Projects run in isolated Linux containers, while the Monaco editor provides IntelliSense, multi-cursor editing, flexible pane layouts, and Ruff linting. Users can search PyPI and install packages into isolated project environments. The platform can host Flask, FastAPI, Django, and Streamlit apps on pythononline.app subdomains with SSL. Registered users can schedule one daily headless task with a 60-second execution limit. A persistent Python REPL supports interactive work, and the output console can render plots from libraries such as matplotlib or plotly. The Registered Account plan is free and includes up to three projects, 512 MB of cloud storage, one hibernating web app, one daily task, and outbound access through a secure proxy. Guest projects stay in browser memory and cannot use outbound internet, host apps, or schedule background tasks. Projects can be exported as standard ZIP archives. The maker describes the service for learners and developers building and deploying APIs or web applications.
Who it suits
Python Online suits learners starting with simple programs as well as developers building and deploying Python APIs and web applications. It is a browser-based option for people who want project environments, package installation, and hosting in one place.
What it does well
- Monaco editor includes IntelliSense and Ruff linting.
- Packages can be installed from PyPI.
- Hosts Flask, FastAPI, Django, and Streamlit apps.
- Registered accounts include one daily scheduled task.
- Projects export as ZIP archives.
What to know first
- Guest projects cannot access outbound internet.
- Guest projects cannot host apps or schedule tasks.
- Daily scheduled tasks have a 60-second execution limit.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Guest | 1 local-only project · 0.25 vCPU · 256 MB RAM · 60-second execution limit · no cloud storage, hosting, scheduled tasks, or internet access | Free |
| Registered Account | Up to 3 projects · 512 MB cloud storage · 0.25 vCPU · 256 MB RAM · 60-second execution limit · 1 hibernating web app · 1 daily task · outbound access through secure proxy | Free |
| Pro | Paid subscription · persistent workstations · direct terminal access · unrestricted internet connectivity | On request |
As pythononline.net lists them, read 7 Oct 2026. The maker's own page has the final word.
Verdict
Python Online covers coding, package installation, interactive work, and app hosting in the browser. Guest access has notable restrictions, while the free registered account includes additional projects and services.
Facts from Python Online's own pages
- Data science
- The persistent Python REPL supports interactive work, and plots from libraries such as matplotlib or plotly can be rendered in the output console. · pythononline.net, 7 Oct 2026
- Editor
- The IDE uses Monaco and includes IntelliSense, multi-cursor editing, flexible pane layouts, and Ruff linting. · pythononline.net, 7 Oct 2026
- Execution
- Code runs in isolated Linux containers on server hardware with standard Linux networking. · pythononline.net, 7 Oct 2026
- Free plan
- Yes · pythononline.net, 20 Sept 2026
- Guest limits
- Guest projects are stored in browser memory, and guest code cannot access the outbound internet, host apps, or schedule background tasks. · pythononline.net, 7 Oct 2026
- Hosting
- The platform supports hosting Python web applications, including Flask, FastAPI, Django, and Streamlit, on pythononline.app subdomains with SSL. · pythononline.net, 7 Oct 2026
- Integrations
- The privacy policy identifies Supabase for authentication and database hosting, LemonSqueezy for payment processing, and Cloudflare for DNS, DDoS protection, and SSL. · pythononline.net, 7 Oct 2026
- Intended users
- The maker describes the service for learners starting with simple programs as well as developers building and deploying APIs and web applications. · pythononline.net, 7 Oct 2026
- Packages
- Users can search PyPI and install packages into isolated project environments. · pythononline.net, 7 Oct 2026
- Portability
- Users can export a project as a standard ZIP archive. · pythononline.net, 7 Oct 2026
- Privacy
- The maker says it does not sell users’ personal information or proprietary code and does not use private code to train AI models. · pythononline.net, 7 Oct 2026
- Product
- Python Online is a browser-based, container-backed Python IDE for writing, running, and hosting Python applications. · pythononline.net, 7 Oct 2026
- Scheduled tasks
- Registered users can schedule one daily task, which runs headlessly with a 60-second execution limit. · pythononline.net, 7 Oct 2026
- Security
- The privacy policy describes isolated Linux namespaces, encrypted WireGuard links between internal services, and a proxy for free-tier outbound requests. · pythononline.net, 7 Oct 2026
- Support
- The contact form accepts general, technical, billing, bug, and abuse reports, and says the team will respond by email. · pythononline.net, 7 Oct 2026
Where Python Online stands on Freedom251
- Coding Playgrounds#83 of 138
- Python IDEs#19 of 26