Free Pro for teachers, open source and nonprofits

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Who is it for?

• Teachers: a course page, syllabus or class site your students read.
• Open-source projects: a public repository or documentation site.
• Nonprofits and charities that teach programming, such as coding clubs.

Companies and paid products can use the Free plan or a paid one. Schools, colleges and universities with heavy use can also apply to Founding Institutions.

What do you get?

The Pro plan, free, for 12 months:

• 1,000,000 runs a month (Free has 100,000).
• 600 submissions a minute, 10 runs at once and 120 waiting at a time for the account.
• Everything else in Pro, as listed on the pricing page.

It is set on your existing account and ends on its date; no card is needed and nothing renews on its own. We email you 14 days before it ends. When the plan returns to Free, judged submissions older than Free's 90 days are deleted.

What link do we ask for?

One visible link to onlinecompiler.io on a public page people read: the course page, the README, the docs or the site's footer. Keep it up while the plan runs. Copy one of these:

<a href="https://onlinecompiler.io/?utm_source=free-pro" rel="sponsored">Code runs on OnlineCompiler.io</a>

[Code runs on OnlineCompiler.io](https://onlinecompiler.io/?utm_source=free-pro)

Keep rel="sponsored" in the HTML link: Google asks for it on links given in exchange for something, and it changes nothing for your readers. GitHub marks links in a README by itself, so the Markdown link needs nothing more.

How does it work?

1. Add the link.
2. Send the form below: the page with the link, the email of your OnlineCompiler.io account, and what it is. No account yet? Sign up free first.
3. Within 5 working days we look at the page, then set Pro on your account and email you, or tell you why not.
4. 14 days before the year ends we email you. To ask for another year, reply: we look at the link and the account and tell you whether we can renew it.

The rules

• We read every application and may say no, for example to a page made just for the link, a site that has nothing to do with code or teaching, or a commercial product.
• One free plan per course, project or organisation.
• If the link comes down, the plan may end early. We email you at least 14 days before.
• If you write about us, say that you get Pro free.
• We may change or end the program. Plans already given run to their date.

Apply

We reply to the email you give here. Questions first? Write to hello@onlinecompiler.io.

Frequently asked questions

Do I need an account first?

Yes. The plan is set on an OnlineCompiler.io account, so sign up free first and give its email in the form.

Why rel="sponsored"?

Google asks sites to mark links given in exchange for something. Your readers see the same link; the mark only tells search engines about the arrangement. GitHub already marks README links, so the Markdown link needs nothing more.

How is this different from Founding Institutions?

Founding Institutions is for schools, colleges and universities with heavy use, and asks for a logo and a quote as well. This is for any teacher, open-source project or nonprofit, for a link alone.

What happens after the 12 months?

The plan returns to Free on its date, unless you ask for another year and we renew it. When the plan returns to Free, judged submissions older than Free's 90 days are deleted. Nothing is charged, because no card is taken.