Software Alternatives, Accelerators & Startups

FastAPI VS Sinatra

Compare FastAPI VS Sinatra and see what are their differences

FastAPI logo FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

Sinatra logo Sinatra

Classy web-development dressed in a DSL
  • FastAPI Landing page
    Landing page //
    2023-05-14
  • Sinatra Landing page
    Landing page //
    2018-09-30

FastAPI features and specs

  • High Performance
    Built on Starlette and Pydantic, FastAPI is one of the fastest frameworks for Python, providing high performance due to its asynchronous request handling.
  • Automatic Interactive API Documentation
    FastAPI automatically generates interactive API documentation via Swagger UI and ReDoc, which are very helpful for development and testing.
  • Type Checking and Validation
    With Pydantic models and Python type hints, FastAPI provides automatic data validation and type checking, reducing the chance of runtime errors.
  • Ease of Use
    Its syntax and design make it easy to learn for Python developers, offering a smooth development experience while reducing boilerplate code.
  • Asynchronous Support
    FastAPI supports asynchronous programming, allowing for better performance for I/O-bound operations, making it optimal for handling many simultaneous connections.
  • Extensive Documentation
    It has comprehensive and well-structured documentation, which is very useful for both beginners and advanced users.
  • Community and Ecosystem
    FastAPI has a growing community and ecosystem, with many plugins and integrations available to extend its functionality.

Possible disadvantages of FastAPI

  • Learning Curve for Asynchronous Programming
    Although FastAPI itself is easy to learn, grasping the concepts of asynchronous programming in Python can be challenging for beginners.
  • Complex Dependencies
    Using Pydantic for advanced validation can make the request models complex, requiring a deeper understanding of Pydantic and its functionalities.
  • Early Stage Libraries
    Some third-party libraries and extensions specifically tailored for FastAPI might still be in early stages of development and lack long-term stability.
  • Limited Real-World Examples
    Although the documentation is extensive, there might be limited real-world examples and case studies readily available compared to more mature frameworks.
  • Deployment Complexity
    Deploying FastAPI applications might be more complex in comparison to traditional synchronous frameworks, mainly due to the need for asynchronous server setups.

Sinatra features and specs

  • Lightweight
    Sinatra is a micro-framework, meaning it is minimalistic and lightweight, making it ideal for small applications and services.
  • Simplicity
    The framework is easy to understand and use, requiring less boilerplate code compared to more complex frameworks like Rails.
  • Quick to Set Up
    Sinatra allows for rapid application development as it can be quickly set up with minimal configuration.
  • Flexibility
    Sinatra provides flexibility to developers, allowing them to structure their application in any way they see fit, without enforcing strict conventions.
  • Performance
    Due to its minimalistic nature, Sinatra can sometimes offer better performance for smaller applications or specific use cases.
  • Middleware Integration
    Sinatra works well with Rack middleware, which allows developers to easily add additional functionality to the application.
  • Active Community
    Sinatra has an active community, providing developers with a wealth of plugins, resources, and support.

Possible disadvantages of Sinatra

  • Limited Built-In Functionality
    Sinatra does not come with many built-in features, requiring developers to implement or integrate additional functionality on their own.
  • Not Ideal for Large Applications
    Due to its simplicity and minimalistic nature, Sinatra may not be suitable for developing large-scale applications or complex systems.
  • Lack of Conventions
    While the flexibility of Sinatra is a pro, the lack of enforced conventions can lead to inconsistent code and architecture, especially in larger teams or projects.
  • Documentation
    While there is documentation available, it is not as extensive or comprehensive as that of larger frameworks like Rails.
  • Learning Curve
    For developers coming from more comprehensive frameworks, adapting to Sinatra's minimalistic approach may require some adjustment.
  • Ecosystem
    The ecosystem of plugins and extensions for Sinatra is smaller compared to more popular frameworks, potentially limiting the options available for developers.

FastAPI videos

FastAPI from the ground up

More videos:

  • Tutorial - 30 Days of Python - Day 14 - Web App with Flask, FastAPI, ngrok, and Invictify - Python TUTORIAL
  • Review - [PT] Python - API com FastAPI - Chat | twitch.tv/codeshow

Sinatra videos

How Frank Sinatra Invented the Album

More videos:

  • Review - Jack Daniel's Sinatra Select
  • Review - Frank Sinatra - I've got you under my skin *first time listening* REACTION

Category Popularity

0-100% (relative to FastAPI and Sinatra)
Developer Tools
79 79%
21% 21
Web Frameworks
62 62%
38% 38
API Tools
100 100%
0% 0
Ruby Web Framework
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare FastAPI and Sinatra

FastAPI Reviews

The 20 Best Laravel Alternatives for Web Development
FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.
25 Python Frameworks to Master
Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack frameworks like Django.
Source: kinsta.com
3 Web Frameworks to Use With Python
myapp/ is the main directory of your FastAPI application. It includes all the other files and directories needed for the application.static/ is a directory used to store static assets such as CSS, JavaScript, and image files. These assets are served directly by the web server and are typically used to add visual styling and interactivity to the application.css/, img/, js/...
Best Alternatives to FastAPI App Free for Windows (2021)
FastAPI Alternative – So many alternatives app to FastAPI that you must to know out there. And, looking for an ideal software was not easy matter. Lucky you, at this page you can find the best replacement app for FastAPI. So what you are waiting for, get the latest FastAPI alternative app for Windows 10 from this page.
Top 5 Back-End Frameworks to Consider for Web Development in 2021
FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. It is fast when compared to other major Python frameworks like Flask and Django. FastAPI gives great flexibility to fulfill businesses’ API needs in today’s evolving world.

Sinatra Reviews

The 20 Best Laravel Alternatives for Web Development
Sinatra swings to its own tune, a Ruby framework for minimalist fans at heart. It’s about keeping it simple, just right for those times when all you need is a light, direct solution to serve and fly high.
Top 10 Phoenix Framework Alternatives
Sinatra is a free and open-source web app library that allows developers to build robust web apps using Ruby on top of the Rack web server.
10 Ruby on Rails Alternatives For Web Development in 2022
If you plan to avoid Ruby on Rails but still want to use the Ruby programming language you should consider Sinatra, - a domain-specific language developed by Blake Mizerany and released in 2007. Unlike RoR, which is a Full Stack Web Development Framework, Sinatra was aimed to be lightweight and agile. It provides the developer with minimum requirements and abstractions that...
Best Alternatives to FastAPI App Free for Windows (2021)
Sinatra is a free and open source software web application library and domain-specific language written in Ruby. It is an alternative to other Ruby web application…
Get Over Ruby on Rails — 3 Alternative Web Frameworks Worth Checking Out
Sinatra is one of the oldest web frameworks for Ruby. It was initially released in 2007 (Rails was released in 2004). Sinatra is a microframework that inspired a lot of other small frameworks the way Rails inspired full-stack frameworks. For example, the famous Express.js framework was inspired by Sinatra as well as some parts of Laravel.

Social recommendations and mentions

Based on our record, FastAPI should be more popular than Sinatra. It has been mentiond 286 times since March 2021. 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.

FastAPI mentions (286)

  • Building Weather & History Story Cards with Python and FastAPI
    By the end of this tutorial, you’ll see how I used FastAPI and Jinja2 to turn raw JSON into a dynamic timeline of weather and history that feels informative and fun. - Source: dev.to / 3 days ago
  • Build Code-RAGent, an agent for your codebase
    The only thing left to do then was to build something that could showcase the power of code ingestion within a vector database, and it immediately clicked in my mind: "Why don't I ingest my entire codebase of solved Go exercises from Exercism?" That's how I created Code-RAGent, your friendly coding assistant based on your personal codebases and grounded in web search. It is built on top of GPT-4.1, powered by... - Source: dev.to / 4 days ago
  • Understanding the Relation Between FastAPI and Uvicorn
    FastAPI and Uvicorn are two essential building blocks when developing high-performance Python APIs. - Source: dev.to / 5 days ago
  • Python: Why Quart Might Be the Better Choice over FastAPI
    Python's diverse ecosystem of web frameworks offers developers a wide range of choices for building robust and efficient applications. In the realm of asynchronous frameworks, Quart and FastAPI have emerged as popular options. While FastAPI has gained considerable attention for its speed and developer-friendly features, Quart presents a compelling alternative, especially for those already familiar with the Flask... - Source: dev.to / 15 days ago
  • Partner Models for Payments: How Rapyd Powers Partner Payment Solutions
    Let's look at how to use Rapyd to build a simple system where you can onboard merchants, add products, receive payments, and receive payouts, all powered by Rapyd's API. To fully integrate this system, businesses can sign up as a Rapyd partner to access additional capabilities for managing merchant transactions. In this tutorial, you'll see how to use the FastAPI framework in Python to create endpoints for each... - Source: dev.to / 26 days ago
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Sinatra mentions (40)

  • Show HN: Dumbo – Hono inspired framework for PHP
    Yeah, I believe Sinatra https://sinatrarb.com/ or Padrino https://padrinorb.com/ inspired Hono. So you are back to Ruby ;). - Source: Hacker News / 6 months ago
  • Using meta-programming in Ruby to build a REST API from a JSON file
    Now because we are using Sinatra as our server, we would need a way to dynamically define new endpoints from the file. Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort. - Source: dev.to / 6 months ago
  • Rust needs a web framework for lazy developers
    Something like https://sinatrarb.com/ for rust would be cool. - Source: Hacker News / 7 months ago
  • Even more Opentelemetry!
    While Ruby is not this famous anymore, I still wanted the stack in my architecture. I eschewed Ruby on Rails in favor of the leaner Sinatra framework. I use sequel for database access. The dynamic nature of the language was a bit of a hurdle, which is why it took me more time to develop my service than with Go. - Source: dev.to / 11 months ago
  • Building a Sinatra app in Ruby
    Sinatra is a lightweight web application framework written in Ruby. It provides a simple and easy-to-use syntax for building web applications. The framework focuses on being minimalistic, allowing developers to quickly create web applications without having to deal with a lot of the boilerplate code and relatively rigid way of doing things that accompany larger and more popular frameworks like Rails. - Source: dev.to / about 1 year ago
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What are some alternatives?

When comparing FastAPI and Sinatra, you can also consider the following products

Django - The Web framework for perfectionists with deadlines

Ruby on Rails - Ruby on Rails is an open source full-stack web application framework for the Ruby programming...

Flask - a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

ASP.NET - ASP.NET is a free web framework for building great Web sites and Web applications using HTML, CSS and JavaScript.

ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple

Laravel - A PHP Framework For Web Artisans