By react-cosmos
react-cosmos — Sandbox for developing and testing UI components in isolation. Listed under Code execution sandboxes in the Orchestration / Agents layer. 3 of 6 comparison attributes are recorded, each with the page it was read from.
Sandbox for developing and testing UI components in isolation.
4 OF 4 SIGNALS HELD
What it runs on, and what runs on it
0 cited edgesComputed from the stack graph, both directions. Every cited edge links the page it was read from; a vendor-added one links the vendor’s own source — this is the reason to be here rather than on the vendor’s own site.
No edges on record for react-cosmos.
Nothing in the directory documents depending on it, and its own docs do not name what it runs on. An edge is only stored when a source states it.
Submit a documented integration →From react-cosmos? No claim is needed for this: a link to your docs that names what react-cosmos runs on is enough.
Open-source signals
A HOLLOW RING IS UNMEASURED, NOT ZERO · WE DO NOT SUBSTITUTE A PARENT COMPANY’S REPOSITORY FOR A PRODUCT THAT HAS NONE
Price
We hold no price for this product.
This is open-source software: you can run it yourself and the licence costs nothing. If the project also sells a hosted service, we do not yet hold the page it prices it on. If that changes — or if you publish /.well-known/pricing.json — it appears here with a capture date.
How we read prices →What its categories ask
3 answered · 3 unanswered6 questions declared by Code execution sandboxes. Most rows across the directory read like these.
“http://json.schemastore.org/cosmos-config”2026-10-06
A ROW WITH NO ANSWER IS NOT A ROW WITH A “NO” · A VENDOR MAY ANSWER A BLANK ONE, MARKED VENDOR CLAIMED WITH ITS SOURCE · A DOCUMENTED VALUE IS DISPUTED, NOT OVERWRITTEN, AND STAYS VISIBLE WHILE WE RE-READ THE SOURCE
Practitioner reviews
Nobody has written one yet.
A review here is structured, not a star: hardware, scale band, what broke in production, and whether you would choose it again.
NO PERCENTAGE IS SHOWN UNDER FIVE REVIEWS · NO STAR RATINGS, EVER
Also in this category
46 products in Code execution sandboxes. Comparison defaults to within the category — pairing this with a GPU cloud would produce a page that means nothing.
USED BY = LISTED PRODUCTS DEPENDING ON IT, IN THIS DIRECTORY
Frequently asked
Is react-cosmos open source?
What does a blank mean on the react-cosmos page?
Where do the react-cosmos figures come from?
Can react-cosmos change what this page says?
Something here is wrong — how do I fix it?
Is this listing run by react-cosmos?
Cite this page
A model that quotes us should quote us correctly. The reading and its date sit inside the citation rather than beside it, because a quotation carrying only a URL goes wrong the week the URL changes.
infratoapp, “react-cosmos — Code execution sandboxes”, read 6 October 2026. Execution languages: TypeScript as published at reactcosmos.org. https://www.infratoapp.com/products/react-cosmos
What react-cosmos can and cannot change here
Claiming react-cosmos lets its admins and editors change the tagline, description, logo, docs link and deployment model of every product that org owns — live, labelled as theirs, and logged. Answers to blank questions and dependencies go live too, marked as the owner’s and sourced; a documented answer cannot be overwritten. Everything else on this page is a stated fact with a dispute route: price, licence and OSS figures. Those columns are ungranted at the database level, so they are not a feature we withheld — they are a write that cannot happen. Name, category, website, pricing page and package names can be changed by the owner only through our review. A dispute never deletes a value; it marks it and publishes the correction.