If bundler is not being used to manage dependencies, install the gem by executing:
$ gem install flet
Flet is a framework that enables you to easily build realtime web, mobile and desktop apps in your favorite language and securely share them with your team. No frontend experience required.
⚡From idea to app in minutes
An internal tool or a dashboard for your team, weekend project, data entry form, kiosk app or high-fidelity prototype – Flet is an ideal framework to quickly hack a great-looking interactive apps to serve a group of users.
📐 Simple architecture
To start developing with Flet, you just need your favorite IDE or text editor. No SDKs, no thousands of dependencies, no complex tooling – Flet has built-in web server with assets hosting and desktop clients.
Flet UI is built with Flutter, so your app looks professional and could be delivered to any platform. Flet simplifies Flutter model by combining smaller “widgets” to ready-to-use “controls” with imperative programming model.
🌐 Speaks your language
📱 Deliver to any device
Deploy Flet app as a web app and view it in a browser. Package it as a standalone desktop app for Windows, macOS and Linux. Install it on mobile as PWA or view via Flet app for iOS and Android.
Flet app example
At the moment you can write Flet apps in Python and other languages will be added soon.
Here is a sample “Counter” app:
require 'flet' require 'flet/IconButton' require 'flet/Page' require 'flet/Row' require 'flet/TextField' require 'flet/icons' def main(page = new Page) page.title = "Flet counter example" page.vertical_alignment = "center" txt_number = TextField(value="0", text_align="right", width=100) def minus_click(e) txt_number.value = int(txt_number.value) - 1 page.update() end def plus_click(e) txt_number.value = int(txt_number.value) + 1 page.update() end page.add( Row( [ IconButton(icons.REMOVE, on_click=minus_click), txt_number, IconButton(icons.ADD, on_click=plus_click), ], alignment="center", ) ) end flet.app target=main
To run the app install
The app will be started in a native OS window – what a nice alternative to Electron!
Now, if you want to run the app as a web app, just replace the last line with:
flet.app target=main, view=flet.WEB_BROWSER
run again and now you instantly get a web app:
check python flet
Contribute to this wonderful project
- Read the CONTRIBUTING.md file