uvicorn VS starlette

Compare uvicorn vs starlette and see what are their differences.

starlette

The little ASGI framework that shines. 🌟 (by encode)
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uvicorn starlette
68 71
9,211 10,990
1.9% 1.9%
8.5 9.1
8 days ago 15 days ago
Python Python
BSD 3-clause "New" or "Revised" License BSD 3-clause "New" or "Revised" License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

uvicorn

Posts with mentions or reviews of uvicorn. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2025-05-02.
  • A2A Python Tutorial - Comprehensive Guide
    2 projects | dev.to | 2 May 2025
    We're almost ready to start our server! We'll be using the A2AServer class from Google-A2A which under the hood starts a uvicorn server.
  • Understanding the Relation Between FastAPI and Uvicorn
    2 projects | dev.to | 28 Apr 2025
    FastAPI and Uvicorn are two essential building blocks when developing high-performance Python APIs.
  • How to use FastAPI for microservices in Python
    4 projects | dev.to | 28 Mar 2025
    To run the server, you will also need to install Uvicorn:
  • Understanding Uvicorn: The basics
    3 projects | dev.to | 13 Mar 2025
    So I've decided to create another series of articles, and this time talking about another piece of FastAPI development: ASGI servers, and mainly focusing on πŸ¦„ uvicorn due to the evident synergy between both projects 😎.
  • What I wish I knew about Python when I started
    8 projects | dev.to | 11 Mar 2025
    Finally, whatever file launches your application (in this case, mine is main.py), it is conventional to include that if __name__ == "main": block at the bottom (shown above), to specify the entrypoint to your application. This isn't strictly necessary in many use casesβ€”for instance, if you're writing a REST API using FastAPI and launching it via uvicorn, you don't need this block. But it also doesn't hurt to have it regardless. It's a helpful reminder of where things begin.
  • FastAPI Tutorial: Build, Deploy, and Secure an API for Free
    3 projects | dev.to | 18 Feb 2025
    This article is written by Marcelo Trylesinski, a > FastAPI expert and > maintainer of Starlette and > Uvicorn. You can check out more of his work > here. All opinions expressed are his own.
  • Show HN: I reverse engineered X to Read Threads without Any Account as Articles
    5 projects | news.ycombinator.com | 30 Dec 2024
    Since, app has selenium minimum running requirement would be 1GB RAM on any OS, and free version of any hosting do not provide that, some that provide are limited by build times or shared cpus.

    So it was only logical to go through the pain/pleasure of setting up deployment on VM.

    Python Backend is deployed on Azure VM(with 4 GB), since it's built on Fastapi their AWSGI support helps keep the server running on long intervals.

    This one is using CF Tunnels to Prod to reduce the latency due to server location.

    You can see uvicorn docs to learn more https://www.uvicorn.org/

  • Top 20 Python API Frameworks with OpenAPI Support
    22 projects | dev.to | 19 Dec 2024
    Uvicorn is a lightning-fast ASGI server implementation, using uvloop and httptools. It is designed to run asynchronous Python web applications, particularly those built with frameworks like FastAPI, Starlette, and others.
  • How to Build a Python API from Scratch with FastAPI
    4 projects | dev.to | 5 Sep 2024
    Uvicorn - An ASGI web server implementation for Python
  • uvicorn VS tremolo - a user suggested alternative
    2 projects | 11 Jul 2024

starlette

Posts with mentions or reviews of starlette. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2025-04-18.
  • Python: Why Quart Might Be the Better Choice over FastAPI
    3 projects | dev.to | 18 Apr 2025
    FastAPI: A modern, high-performance framework designed for building APIs with Python 3.7+ that prioritizes speed and efficiency. It leverages Python type hints to improve code readability and maintainability, and it integrates seamlessly with Starlette for asynchronous capabilities and Pydantic for data validation.
  • FastAPI is Overkill: Starlette and Pydantic Are All You Really Need
    1 project | dev.to | 12 Apr 2025
    In the field of Python web development, FastAPI has received much attention due to its concise and user-friendly features. However, in reality, it is just a high-level encapsulation of Starlette and Pydantic. The official Starlette website showcases its rich features, and Pydantic is renowned for its powerful data validation capabilities. By directly using these two libraries, developers can flexibly build high-performance APIs without relying on the encapsulation of FastAPI. Next, we will elaborate in detail by combining the core functions and features of both.
  • How to use FastAPI for microservices in Python
    4 projects | dev.to | 28 Mar 2025
    The framework's official website mentions a number of pros of FastAPI. In my opinion, the most useful features from a microservice perspective are: the simplicity of code (easy to use and avoid boilerplate), high operational capacity thanks to Starlette and Pydantic and compatibility with industry standards - OpenAPI and JSON Schema.
  • πŸ”₯ The Fastest Python API Frameworks Ranked β€” Which One Should You Choose?
    1 project | dev.to | 7 Mar 2025
    πŸ“˜ Learn More: Starlette GitHub
  • FastAPI Tutorial: Build, Deploy, and Secure an API for Free
    3 projects | dev.to | 18 Feb 2025
    This article is written by Marcelo Trylesinski, a > FastAPI expert and > maintainer of Starlette and > Uvicorn. You can check out more of his work > here. All opinions expressed are his own.
  • Best Backend Frameworks for 2025: A Developer's Guide to Making the Right Choice
    8 projects | dev.to | 2 Feb 2025
    Starlette: The ASGI Foundation
  • The Core of FastAPI: A Deep Dive into Starlette 🌟🌟🌟
    1 project | dev.to | 12 Jan 2025
    FastAPI is essentially an API wrapper for Starlette. To fully grasp FastAPI, one must first understand Starlette.
  • Server-Sent Events (SSE) Are Underrated
    8 projects | news.ycombinator.com | 25 Dec 2024
    I built several tool to tail logs with SSE using Flask/FastAPI. Easy to implement and maintain.

    For FastAPI if you want some hooks when client disconnects aka nginx 499 errors, follow this simple tip

    https://github.com/encode/starlette/discussions/1776#discuss...

  • Is Flask Dead? Is FastAPI the Future?
    1 project | dev.to | 25 Dec 2024
    ASGI Web Framework: Web frameworks that implement the ASGI specification (such as FastAPI), while Flask and Django are web frameworks that implement WSGI. These frameworks are designed for developers to write applications, with easy-to-use interfaces. Developers only need to fill in the business logic according to their needs. Early frameworks mostly implemented ASGI toolkits internally, while later frameworks usually combine suitable toolkits. For example, Flask uses Werkzeug (its own), and FastAPI uses Starlette (from others).
  • Top 20 Python API Frameworks with OpenAPI Support
    22 projects | dev.to | 19 Dec 2024
    Starlette is a lightweight ASGI framework/toolkit, ideal for building high-performance async services in Python. It provides the essential components needed to build web applications, including routing, middleware, sessions, and more.

What are some alternatives?

When comparing uvicorn and starlette you can also consider the following projects:

granian - A Rust HTTP server for Python applications

AIOHTTP - Asynchronous HTTP client/server framework for asyncio and Python

daphne - Django Channels HTTP/WebSocket server

fastapi - FastAPI framework, high performance, easy to learn, fast to code, ready for production

hypercorn - Hypercorn is an ASGI and WSGI Server based on Hyper libraries and inspired by Gunicorn.

Flask - The Python micro framework for building web applications.

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InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com
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SaaSHub helps you find the best software and product alternatives
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