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About

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.7+ based on standard Python type hints. Fast: Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available. Minimize code duplication, multiple features from each parameter declaration.

About

You never extend classes and you rarely implement interfaces. Javalin is just a few thousand lines of code on top of Jetty, and its performance is equivalent to raw Jetty code. Due to its size, it's very easy to reason about the source code. Other Java and Kotlin web frameworks usually offer one version for each language. Javalin is being made with inter-operability in mind, apps are built the same way in both Java and Kotlin. Javalin runs on top of Jetty, one of the most used and stable web servers on the JVM. You can configure the Jetty server fully, including SSL and HTTP3 and everything else that Jetty offers. Many lightweight Java and Kotlin web frameworks don't support OpenAPI, but Javalin does.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

DevOps teams looking for an advanced Development Frameworks solution

Audience

Developers searching for a simple web framework solution for Java and Kotlin

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 3.0 / 5
ease 4.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 5.0 / 5
ease 4.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • Good for production and python based startup with it's speed and features. Would highly recommend someone who needs a python based framework.

Cons

  • Takes some time in manual configuration and it's type checking may be overwhelming more new developer.

Pros & Cons from Real Users

Pros

  • Good for java developer who want to create there own project but do not want to integrate spring boot. It is fast and modern which is extremely fast.

Cons

  • It may require some good knowledge of java before using it. you would doing many manual configurations most of the time but atleast not in 'XML'.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

FastAPI
fastapi.tiangolo.com/lo/

Company Information

Javalin
javalin.io

Alternatives

Alternatives

Ktor

Ktor

JetBrains
Eclipse Jetty

Eclipse Jetty

Eclipse Foundation
MappyField 365

MappyField 365

AppJetty

Categories

Categories

Integrations

APIGen Supported
AppSignal Supported
Azure Marketplace Supported
BudgetML Supported
DataFast Supported
Diploi Supported
JarvisLabs.ai Supported
Java Not Supported
Kodosumi Supported
Kotlin Not Supported
Koyeb Supported
NiceGUI Supported
Open Interpreter Supported
Reflex Supported
Rio Supported
Stakpak Supported
SuperAGI SuperCoder Supported
Union Pandera Supported
Zuplo Supported
txtai Supported

Integrations

APIGen Not Supported
AppSignal Not Supported
Azure Marketplace Not Supported
BudgetML Not Supported
DataFast Not Supported
Diploi Not Supported
JarvisLabs.ai Not Supported
Java Supported
Kodosumi Not Supported
Kotlin Supported
Koyeb Not Supported
NiceGUI Not Supported
Open Interpreter Not Supported
Reflex Not Supported
Rio Not Supported
Stakpak Not Supported
SuperAGI SuperCoder Not Supported
Union Pandera Not Supported
Zuplo Not Supported
txtai Not Supported
Claim FastAPI and update features and information
Claim FastAPI and update features and information
Claim Javalin and update features and information
Claim Javalin and update features and information