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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.

Nest.js
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Adonis JS
hapi.js
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A highly extensible Node.js and TypeScript framework for building APIs and microservices.

Which is more popular?
Based on our record, FastAPI seems to be a lot more popular than LoopBack.io. While we know about 313 links to FastAPI, we've tracked only 6 mentions of LoopBack.io.
Website, pricing, platforms and company facts side by side.
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| Website | fastapi.tiangolo.com | loopback.io |
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| Company | Startup from Colombia | — |
| Listed in |
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of LoopBack.io yet.
Walkthroughs and reviews on video.
FastAPI from the ground up
More videos
LoopBack.io Build REST APIs in under 2.5 mins
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using FastAPI and LoopBack.io. 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...
Moreover, it can permit a user to build a server API, which maps to another server. Furthermore, Loopback.JS assists native browser and mobile SDKs for different clients like Browser, iOS, and Android/Java JavaScript...
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 / about 12 hours 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 1 month 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
Loopback.io is a powerful Node.js framework for creating APIs and easily connecting to backend data sources. It has an Angular.js SDK and provides SDKs for iOS and Android. - Source: dev.to / about 2 years ago
Backend is usually an API you design, can simply use Rails for this, basic Express.js or some framework like https://loopback.io/ if you want javascript otherwise you want 'system design'... Source: over 3 years ago
LoopBack – Highly Extensible Node.js and TypeScript framework. Source: over 3 years ago
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