# Does Rocket Chat use Flash?

**URL:** <https://forums.rocket.chat/t/does-rocket-chat-use-flash/339>\
**Category:** Community Support\
**Created:** [March 9, 2018, 8:23pm UTC](https://forums.rocket.chat/t/does-rocket-chat-use-flash/339 "2018-03-09T20:23:16Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![hovan316](https://avatars.discourse-cdn.com/v4/letter/h/90db22/32.png) [@hovan316](https://forums.rocket.chat/u/hovan316)\
**Post date:** [March 9, 2018, 8:23pm UTC](https://forums.rocket.chat/t/does-rocket-chat-use-flash/339/1 "2018-03-09T20:23:17Z")

</div>

Hi all,

New to Rocket Chat. Just wanted to know if the web browser version of Rocket Chat uses Flash. If not, what does it run on?

Thank you!

---

<div class="post-metadata">

**Author:** ![TwizzyDizzy](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/twizzydizzy/32/11_2.png) [@TwizzyDizzy](https://forums.rocket.chat/u/TwizzyDizzy)\
**Post date:** [March 9, 2018, 10:21pm UTC](https://forums.rocket.chat/t/does-rocket-chat-use-flash/339/2 "2018-03-09T22:21:37Z")

</div>

> [@hovan316](#):
>
> wanted to know if the web browser version of Rocket Chat uses Flash.

Why would you assume that? The answer is: **no**. Rocket.Chat does only uses pure HTML+JS. The server itself is written in nodejs.

Cheers  
Thomas

---

<div class="post-metadata">

**Author:** ![JSzaszvari](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/jszaszvari/32/86_2.png) [@JSzaszvari](https://forums.rocket.chat/u/JSzaszvari)\
**Post date:** [March 11, 2018, 5:58am UTC](https://forums.rocket.chat/t/does-rocket-chat-use-flash/339/3 "2018-03-11T05:58:43Z")

</div>

Hey @hovan316

Thanks for the great question.

I’m happy to say that there is no flash in Rocket.Chat at all. The platform is built using Meteor JS. You can find out more about it here [https://www.meteor.com](https://www.meteor.com).

Meteor is an open source platform for web, mobile, and desktop.thats very flexible and widely adopted. (It’s what most of Slack is written in too!)

If you search around on the web there’s quite a few food tutorials on building your own basic chat system with it if you are looking for a deeper understanding of how it all works together.

I hope that answers your question.

Regards  
John