I can’t say for sure exactly what Stripe is using, it could be a custom built static site, or they could be using one a static site generator with a custom them

I can’t say for sure exactly what Stripe is using, it could be a custom built static site, or they could be using one a static site generator with a custom theme. Some tools that you can use to build doc sites similar to stripes off the top of my head: GitBook - https://www.gitbook.com/ https://www.gitbook.com/ Hexo - https://hexo.io/ https://hexo.io/ Docute - https://v3.docute.org/#/ https://v3.docute.org/#/ Gatsby - https://www.gatsbyjs.org/ https://www.gatsbyjs.org/ VuePress - https://vuepress.vuejs.org/ https://vuepress.vuejs.org/