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

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bottle.py is a fast and simple micro-framework for python web-applications.

Which is more popular?
Based on our record, FastAPI seems to be a lot more popular than Bottle. While we know about 313 links to FastAPI, we've tracked only 20 mentions of Bottle.
Website, pricing, platforms and company facts side by side.
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| Website | fastapi.tiangolo.com | bottlepy.org |
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| Company | Startup from Colombia | — |
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What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
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FastAPI from the ground up
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❤ Best Baby Bottle Review, Comotomo, Tommy Tippee, Avent, Dr. Brown Bottles ❤
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using FastAPI and Bottle. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


When our backend team needs to build services for data parsing, aggregators, or high-load APIs, FastAPI is our absolute go-to choice. It completely lives up to its name-development speed is outstanding. The...
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.
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...
Want to create ridiculously light web applications with no other dependencies? Bottle is a lightweight Python microframework designed to easily build small- or medium-sized web applications. It doesn’t include any...
Bottle is a lightweight and simple web framework in Python. It has a minimalist design and comes with a built-in HTTP server, making it easy to develop and deploy applications quickly. It also has support for various...
About: Bottle is a fast and simple micro-framework for small web applications. It is distributed as a single file module and has no dependencies other than the Python Standard Library. It offers request dispatching...
Recommendations tracked on public social media and blogs since March 2021.


API: FastAPI with async SQLAlchemy, PostgreSQL 17 for data, Redis for caching and rate limits. The cache is invalidated by a single version counter bumped on every write: no fine-grained purging to manage. - Source: dev.to / 8 days ago
I used FastAPI, a Python framework built specifically for creating APIs quickly, with automatic validation and interactive documentation baked in. - Source: dev.to / about 2 months ago
The Sovereign SDK is a Python-native framework designed to minimize prose overhead while generating ironclad, cryptographic execution receipts for AI agents, complete with drop-in FastAPI/Starlette ASGI middleware. - Source: dev.to / 4 months ago
It looks a lot like Bottle[1] but with MicroPython support. [1] https://bottlepy.org/docs/dev/. - Source: Hacker News / about 1 year ago
Bottle’s biggest strength lies in its simplicity and single-file deployment, making it one of the easiest frameworks to get started with. Its minimalism allows developers to focus on writing core logic without getting bogged down in... - Source: dev.to / over 1 year ago
Bottle is a fast, simple, and lightweight WSGI micro web-framework for Python. - Source: dev.to / almost 2 years ago
When comparing FastAPI and Bottle, you can also consider the following products.

a microframework for Python based on Werkzeug, Jinja 2 and good intentions.
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Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple
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Ruby on Rails is an open source full-stack web application framework for the Ruby programming...
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Yii is a high-performance component-based PHP framework best for Web 2.0 development.
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Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications
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