Solara
Reactive Python web framework by the ipywidgets author, built for data apps and Jupyter-native work.
About
Solara is a reactive Python framework for data-heavy web apps, created by Maarten Breddels (author of ipywidgets and vaex) and maintained by Widgetti. Apps are written as reactive components in pure Python with a Vue-based frontend; state is reactive by default, so UI updates flow from data changes without manual plumbing.
Its standout trait is the Jupyter bridge: the same components render inside notebooks and as standalone web apps, so a data-science prototype can become a shareable dashboard without a rewrite. Solara is MIT licensed, integrates with the ipywidgets ecosystem, and suits teams already doing exploratory work in Jupyter who want to publish it.
What it can do
- Reactive Python components with a Vue frontend
- Same components run in Jupyter notebooks and as web apps
- ipyvuetify and ipywidgets ecosystem integration
- Built-in routing, theming, and layout components
- Deployable to standard Python hosting and containers
Setup
pip install solara, write components with @solara.component, then run solara run app.py for the dev server.
Prerequisites
Python 3.9+; familiarity with Jupyter helps but is not required.
Use cases
Works with
Trust score — 7/10
Scored 7/10 (verified tier, metrics-v1). Evidence: 2,182 GitHub stars (widgetti/solara); repo pushed 2026-10-15 (same-day activity); MIT license confirmed in repo; Widgetti (Maarten Breddels) authorship confirmed; officialUrl https://solara.dev curl-verified 200; PyPI project verified 200. Manual review: reactive-component model and Jupyter-bridge positioning verified; smaller community than Gradio/NiceGUI, reflected in score. License: MIT.
★ 2,182 GitHub stars
Sources
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