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SPECIFICTION
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tio.run

Free plan WebAPISelf-hosted
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Spec score 7.7 #90 of 138 in Coding Playgrounds

Spec sheet

Purpose
TIO is a family of online interpreters for practical and recreational programming languages.Read 12 Oct 2026 · tio.run
Audience
TIO began as a place to host solutions to Code Golf puzzles and can also be used to try and share code snippets.Read 12 Oct 2026 · github.com
Free plan
YesRead 22 Sep 2026 · tio.run
API
TioTests documentation identifies a TIO backend URL with an API endpoint for running tests.Read 12 Oct 2026 · github.com
Privacy
The web app is ad-free and does not use tracking cookies or third-party analytics scripts.Read 12 Oct 2026 · tio.run
Support
Users can request features, report bugs, or ask questions through the listed community channels or by email.Read 12 Oct 2026 · tio.run
Donations and infrastructure
The site describes donations to help cover server costs and says TIO is powered by DigitalOcean.Read 12 Oct 2026 · tio.run
Execution security
The setup documentation says user-supplied code runs on arena servers in a SELinux sandbox.Read 12 Oct 2026 · github.com
How it works
Users choose a language, enter code, and run it in a sandboxed environment; results are returned to the browser.Read 12 Oct 2026 · tio.run
Languages
The site says languages and features are added by request.Read 12 Oct 2026 · tio.run
Mobile
The site says TIO works well on mobile devices.Read 12 Oct 2026 · tio.run
Notable deployment limit
The maker says its Docker image disables SELinux and should only be used offline because exposing it to untrusted networks is unsafe.Read 12 Oct 2026 · github.com
Open source
The software that powers TIO is open source under the MIT license.Read 12 Oct 2026 · tio.run
Self-hosting
The maker publishes setup instructions for running a new TIO instance.Read 12 Oct 2026 · github.com
Sharing
Users can create client-side permalinks that encode code and input in the URL.Read 12 Oct 2026 · tio.run
Sharing controls
link_accessRead 22 Sep 2026 · tio.run

Plans and prices

Free Free Web app is free of charge Read 12 Oct 2026 · tio.run

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