# Creating custom app/popup window **URL:** \ **Category:** APIs & Integrations\ **Tags:** developer-tools\ **Created:** [April 3, 2023, 8:57am UTC](https://community.hubspot.com/t/creating-custom-app-popup-window/78571 "2023-04-03T08:57:39Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Svenvdp](https://avatars.discourse-cdn.com/v4/letter/s/8c91f0/32.png) [@Svenvdp](https://community.hubspot.com/u/Svenvdp)\ **Post date:** [April 3, 2023, 8:57am UTC](https://community.hubspot.com/t/creating-custom-app-popup-window/78571/1 "2023-04-03T08:57:39Z")
Hi, i have a question. I’m exploring the option of adding aditional functionalities to an already excisting integration but i cant really find a clear answer to my question. Is it possible to have a fully custom coded page or pop up window in the CRM where i can display data i pull from an external api and interact with it sending it back with changes after? Thank you in advance ---
**Author:** ![PamCotton](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/pamcotton/32/47916_2.png) [@PamCotton](https://community.hubspot.com/u/PamCotton)\ **Post date:** [April 4, 2023, 2:12pm UTC](https://community.hubspot.com/t/creating-custom-app-popup-window/78571/2 "2023-04-04T14:12:57Z")
Hello @Svenvdp, that’s a great question! Let’s invite our top experts to this conversation. Hello, @Kevin-C @BarryGrennan @Jsum any recommendations to @Svenvdp matter? Thank you, Pam ---
**Author:** ![Kevin-C](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/kevin-c/32/34570_2.png) [@Kevin-C](https://community.hubspot.com/u/Kevin-C)\ **Post date:** [April 4, 2023, 4:04pm UTC](https://community.hubspot.com/t/creating-custom-app-popup-window/78571/3 "2023-04-04T16:04:59Z")
Thanks @PamCotton Hey @Svenvdp This sounds like a perfect usecase for a [Custom CRM Card, CRM extension](https://developers.hubspot.com/docs/platform/create-custom-cards-with-projects).