> For the complete documentation index, see [llms.txt](https://loop-crypto.gitbook.io/old-loop-crypto/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://loop-crypto.gitbook.io/old-loop-crypto/learn/case-studies.md).

# Case studies

<table data-view="cards"><thead><tr><th></th><th></th><th></th></tr></thead><tbody><tr><td></td><td><a href="https://www.loopcrypto.xyz/blog/castle-capital-uses-loop-to-receive-and-pay-in-crypto">Castle Capital</a>: Subscriptions</td><td></td></tr><tr><td></td><td><a href="https://www.loopcrypto.xyz/blog/charmverse-implements-loop-for-crypto-subscription-payments">CharmVerse</a>: Subscriptions</td><td></td></tr><tr><td></td><td><a href="https://www.loopcrypto.xyz/blog/case-study-assure-defi">Assure DeFi</a>: One-time payment</td><td></td></tr></tbody></table>