Open-source Python framework Flet has released version 1.0, a milestone the team says makes the project ready for production-grade applications. The framework lets developers build and deploy apps for the web, desktop, and mobile using only Python, while the user interface is rendered through Flutter. Desktop support covers Windows, macOS, and Linux, and mobile support includes iOS and Android.
The 1.0 release is available on PyPI under the Apache 2.0 license, with the SDK requiring Python 3.10 or later. Flet also ships with a command-line tool, `flet build`, which can generate application packages for eight target platforms. According to the release details, the update includes performance work that improves control diff calculation speed by as much as 6.7x.
The team also said Flet supports both declarative and imperative UI programming styles and offers an MCP server tool for integration with AI coding assistants. MarkTechPost said the project reached the 1.0 milestone about four years after it was started.
Open-source Python framework Flet has officially released version 1.0, a milestone the team said makes it ready for building production-grade applications.
Python-only development across web, desktop, and mobile
Flet allows developers to build and deploy applications using only Python. It supports the web, desktop, and mobile platforms, with desktop coverage for Windows, macOS, and Linux, and mobile support for iOS and Android. Its UI is rendered through Flutter.
Released on PyPI under Apache 2.0
The release is available on PyPI under the Apache 2.0 license, and the SDK requires Python 3.10 or later.
Build tooling and performance gains
Flet’s command-line tool, flet build, can generate application packages for eight target platforms. The release also includes performance optimizations, with control diff calculation speed improving by as much as 6.7x.
Flet also provides more than 100 Python packages to support mobile development.
Two UI programming styles and MCP server support
The Flet team said the framework supports both declarative and imperative UI programming styles. It also offers an MCP server tool for integration with AI coding assistants.
According to MarkTechPost, the project reached the 1.0 milestone about four years after it was launched.
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