Python Online
Python Online is a browser-based, container-backed Python IDE for writing, running, and hosting applications.
What Python Online is
Python Online is a browser-based, container-backed Python IDE for writing, running, and hosting applications. Code executes 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 in isolated project environments. The service hosts Flask, FastAPI, Django, and Streamlit applications on pythononline.app subdomains with SSL. A persistent Python REPL supports interactive work, and plots from libraries such as matplotlib or plotly can appear in the output console. Registered accounts can schedule one daily headless task with a 60-second execution limit. The free registered plan costs nothing and allows up to three projects, 512 MB cloud storage, one hibernating web app, one daily task, and secure-proxy outbound access. Guest projects remain in browser memory and cannot use outbound internet, host apps, or background schedules. Projects export as standard ZIP archives.
Good
- Runs code in isolated Linux containers
- Monaco editor includes IntelliSense and Ruff linting
- Hosts Flask, FastAPI, Django, and Streamlit
- Free account includes three projects
- Exports projects as ZIP archives
Watch out
- Guest projects cannot access outbound internet
- Guest users cannot host apps or schedule tasks
- Daily scheduled tasks have a 60-second limit
Who it suits
Python Online suits learners starting with simple programs and developers building or deploying APIs and web applications. It is useful for browser-based Python work with optional hosting and scheduled tasks.
Verdict
Python Online combines browser editing, isolated execution, package installation, and Python web-app hosting. The free account has clear resource limits, while Pro capabilities require a paid subscription with unspecified pricing.
Plans and prices
From Python Online's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Guest | Free | 1 local-only project · 0.25 vCPU · 256 MB RAM · 60-second execution limit · no cloud storage, hosting, scheduled tasks, or internet access |
| Registered Account | Free | 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 |
| Pro | Priced on request | Paid subscription · persistent workstations · direct terminal access · unrestricted internet connectivity |
The facts
Each one read from Python Online's own pages, with the date it was checked.
What it does
- 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.checked 7 Oct 2026
- Editor
- The IDE uses Monaco and includes IntelliSense, multi-cursor editing, flexible pane layouts, and Ruff linting.checked 7 Oct 2026
- Execution
- Code runs in isolated Linux containers on server hardware with standard Linux networking.checked 7 Oct 2026
- Guest limits
- Guest projects are stored in browser memory, and guest code cannot access the outbound internet, host apps, or schedule background tasks.checked 7 Oct 2026
- Hosting
- The platform supports hosting Python web applications, including Flask, FastAPI, Django, and Streamlit, on pythononline.app subdomains with SSL.checked 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.checked 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.checked 7 Oct 2026
- Packages
- Users can search PyPI and install packages into isolated project environments.checked 7 Oct 2026
- Portability
- Users can export a project as a standard ZIP archive.checked 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.checked 7 Oct 2026
- Product
- Python Online is a browser-based, container-backed Python IDE for writing, running, and hosting Python applications.checked 7 Oct 2026
- Scheduled tasks
- Registered users can schedule one daily task, which runs headlessly with a 60-second execution limit.checked 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.checked 7 Oct 2026
- Support
- The contact form accepts general, technical, billing, bug, and abuse reports, and says the team will respond by email.checked 7 Oct 2026
Money
- Free plan
- Yeschecked 20 Sep 2026
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