Software Alternatives, Accelerators & Startups

Anvil.works VS React Engine

Compare Anvil.works VS React Engine and see what are their differences

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Anvil.works logo Anvil.works

Build seriously powerful web apps with all the flexibility of Python. No web development experience required.

React Engine logo React Engine

A react render engine for Universal (previously Isomorphic) JavaScript apps written with express, by PayPal
  • Anvil.works Landing page
    Landing page //
    2022-03-23

Anvil is a powerful online platform that lets you build web applications with nothing but Python. It comes with two-click deployment, built-in user authentication, easy-to-use databases and loads more!

Learn all about Anvil in 80 seconds: https://youtu.be/3V-3g1mQ5GY

  • React Engine Landing page
    Landing page //
    2023-10-02

Anvil.works features and specs

  • Ease of Use
    Anvil.works simplifies web development through its drag-and-drop interface and Python-based backend, making it accessible for developers who may not have extensive front-end skills.
  • Integrated Development
    It provides an all-in-one platform, including database management, authentication, and server-side logic, which reduces the need for multiple third-party services.
  • Rapid Prototyping
    The platform allows for quick iteration and development of prototypes, enabling faster testing and validation of ideas.
  • Python Support
    For developers familiar with Python, Anvil.works allows them to leverage their existing knowledge without having to learn JavaScript, HTML, or CSS.
  • Deployment Simplicity
    Deploying an application is straightforward and seamless, as it removes much of the overhead involved in traditional web app deployment.

Possible disadvantages of Anvil.works

  • Limited Flexibility
    Because it's an all-in-one solution, customization might be limited compared to traditional development stacks where you have complete control over all layers of the application.
  • Performance Constraints
    Applications built on Anvil.works might not be as performant as those built with more specialized frameworks or stacks, particularly for very large or complex applications.
  • Vendor Lock-in
    Reliance on Anvil.works means that your application is dependent on their platform. Migrating away can be challenging if their pricing model changes or if the service discontinues.
  • Learning Curve
    While it reduces the need to learn multiple web technologies, there is still a learning curve for mastering the Anvil-specific ways of doing things.
  • Cost
    While there is a free tier, advanced features and higher tiers can become costly, particularly if the platform scales with usage.

React Engine features and specs

  • Isomorphic rendering
    React Engine enables both server-side and client-side rendering of React components, providing a seamless isomorphic/universal JavaScript experience. This allows for faster initial page loads and better SEO while maintaining rich client-side interactivity.
  • Express.js integration
    React Engine is designed as a view engine for Express.js, making it easy to integrate React into existing Express-based applications with minimal configuration. It follows familiar Express conventions for setting up view engines.
  • Built-in React Router support
    The library comes with built-in support for React Router, enabling developers to easily set up server-side and client-side routing without complex manual configuration.
  • PayPal backing
    React Engine was developed and maintained by PayPal, which provided credibility and ensured it was battle-tested in a large-scale production environment before being open-sourced.
  • Simplified setup
    The library abstracts away much of the complexity involved in setting up server-side rendering with React, reducing boilerplate code and allowing developers to get a universal React application running quickly.

Possible disadvantages of React Engine

  • Abandoned project
    The repository appears to be no longer actively maintained, with no recent commits or updates. This makes it risky to use in production as bugs and security vulnerabilities may go unpatched.
  • Outdated dependencies
    React Engine was built for older versions of React and React Router. It may not be compatible with modern versions of React (16+, 17, 18) or React Router (v5, v6), limiting its usefulness in current projects.
  • Limited ecosystem support
    The library is tightly coupled to Express.js, meaning it cannot be easily used with other Node.js frameworks like Koa, Hapi, or Fastify, reducing its flexibility.
  • Better modern alternatives
    Modern tools like Next.js, Remix, and Vite with SSR plugins provide far more comprehensive and well-maintained solutions for server-side rendering with React, making React Engine largely obsolete.
  • Limited documentation and community
    The project has relatively sparse documentation and a small community, making it difficult for new developers to troubleshoot issues or find examples and best practices for advanced use cases.

Analysis of Anvil.works

Overall verdict

  • Anvil.works is considered a good platform for web development, especially for those who prefer a simplified, drag-and-drop interface.

Why this product is good

  • It provides an easy-to-use, visual interface that allows developers to design web apps quickly without needing to handle the complexities of frontend/backend integration manually.
  • Anvil uses Python, a popular and beginner-friendly programming language, allowing developers to write both frontend and backend code.
  • The platform includes built-in components for common web functionalities, such as user authentication, data tables, API management, and email services, enhancing productivity.
  • It is particularly useful for rapid prototyping and creating small to mid-scale applications, thanks to its all-in-one nature.
  • Anvil simplifies the deployment process, allowing for seamless app sharing and scaling without deep DevOps knowledge.

Recommended for

  • Beginners who want to learn web development using Python.
  • Developers interested in rapid application development and prototyping.
  • Small teams or individuals who need to deploy applications quickly without extensive setup.
  • Educators and students looking for a practical, accessible way to build and deploy applications.

Analysis of React Engine

Overall verdict

  • Unable to verify a project specifically named 'React Engine' on GitHub with confidence, as this does not correspond to a widely recognized or well-documented open-source project that I have reliable information about. There may be multiple small or niche repositories using this name, and quality would vary significantly between them.

Why this product is good

  • React Engine is not a commonly recognized name in the mainstream React ecosystem
  • No verifiable consensus data on stars, maintenance status, documentation quality, or community adoption is available
  • Could refer to a personal project, a boilerplate, a rendering engine, or a niche tool - without more context, its quality cannot be assessed
  • Names like this are sometimes used for student projects, abandoned repos, or experimental tools that lack production readiness

Recommended for

  • Not recommended without further verification
  • Developers should search GitHub directly, check star count, last commit date, open issues, and documentation before adopting
  • Best suited for evaluation on a case-by-case basis rather than a blanket recommendation
  • If you have a specific repository URL, sharing it would allow for a more accurate assessment

Category Popularity

0-100% (relative to Anvil.works and React Engine)
Developer Tools
100 100%
0% 0
Office & Productivity
0 0%
100% 100
App Development
100 100%
0% 0
eCommerce Tools
0 0%
100% 100

User comments

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Social recommendations and mentions

Based on our record, Anvil.works seems to be a lot more popular than React Engine. While we know about 102 links to Anvil.works, we've tracked only 1 mention of React Engine. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Anvil.works mentions (102)

  • PySimpleGUI 6
    Have a look at https://anvil.works. - Source: Hacker News / 4 months ago
  • How to Build a RAG Solution with Llama Index, ChromaDB, and Ollama
    With a few lines of Python, you can build a basic retrieval-augmented generation (RAG) solution, but it doesnโ€™t stop here. You can extend this project to search for multiple web pages, load large documents, add a simple web UI using either Streamlit or Anvil, or even experiment with different models in Ollama. - Source: dev.to / 10 months ago
  • The Python Web Stack You've Never Heard Of: Building Apps Without Frontend Code
    Anvil takes a contrarian approach: what if you could write your entire web application including the client-side code in Python? No JavaScript required. But hereโ€™s the technical puzzle: browsers only understand JavaScript. So how does this actually work? - Source: dev.to / 11 months ago
  • Ask HN: Who is hiring? (September 2025)
    We make an open-source web framework, an online code editor, a GUI builder, and a PaaS hosting platform. Together, you can build and host a full-stack web application - and all you need is a little Python. (Yes, even the client-side code - we compile Python to JS with a Pythonic GUI framework!) Weโ€™re looking for an experienced all-rounder to work on the core Anvil platform, with a focus on the back-end. Our stack... - Source: Hacker News / 12 months ago
  • The Best Python Web App Frameworks in 2025
    Anvil takes a very different approach to building Python web applications. While the previous options are Python packages built as alternatives to Streamlit, Anvil was built to be Visual Basic for the web. - Source: dev.to / about 1 year ago
View more

React Engine mentions (1)

  • react-engine vs other template engines
    I was wondering to use paypal's React Engine (https://github.com/paypal/react-engine), but I have some doubts:. Source: over 4 years ago

What are some alternatives?

When comparing Anvil.works and React Engine, you can also consider the following products

Unity - The multiplatform game creation tools for everyone.

Blender - Blender is the open source, cross platform suite of tools for 3D creation.

Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.

CryENGINE - The most powerful game development platform is now available to everyone. Full engine source code.

Stencyl - Make iOS (iPhone/iPad), Android, Flash, Windows & Mac games without code using Stencyl.

Cocos2d - Cocos2d