Reflex

What is Reflex?

Python library for internal tools and dashboards, with front end and back end in one language.

Who is Reflex best for?

Reflex is best for Python developers and data teams who want to ship internal tools and dashboards without writing JavaScript.

• Internal tools in Python

  UI, state and event handlers are all Python, so data teams can build admin panels without learning React.

• Dashboards on your own data

  An app can call your databases, APIs and AI models from Python event handlers and show the results in one page.

• Apps behind a company VPN

  The self-hosting guide covers running the front end and back end on-premise or inside a private network.

How much does Reflex cost?

The Reflex framework is free and open source; Reflex Build, Reflex Cloud hosting and hands-on engineering help are sold after a demo, with no public price list.

Reflex Build (the AI app builder), Reflex Cloud hosting and work with Reflex engineers are priced per company after a demo; the pricing page lists no prices. Full pricing on reflex.dev. We checked these prices on 8 Nov 2026.

How do readers rate Reflex?

No one has rated Reflex yet. Be the first.

Is Reflex open source?

Yes. Reflex's code is public under the Apache 2.0 licence, so you can run it on your own server.

What are the best Reflex alternatives?

Reflex is an open source alternative to Retool. ToolJet, Appsmith, Refine and 2 more do the same job and are open source too.

RetoolFree

Prompt-built internal apps, agents and workflows on your data.

ToolJetOpen Source

Internal tools built from plain language, open source.

AppsmithOpen Source

Low-code builder for admin panels, dashboards and internal tools on top of your databases and APIs.

RefineOpen Source

Build admin panels, dashboards and B2B apps on your APIs, by hand or with an AI agent.

ContemberOpen Source

Custom business apps from an open-source TypeScript framework.

WindmillOpen Source

Developer platform that turns scripts into workflows, internal apps, cron jobs and AI agents.

Questions about Reflex