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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
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

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
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

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
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

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
AppSignal
Azure Marketplace
BudgetML
DataFast
Diploi
JarvisLabs.ai
Java
Kotlin
Koyeb
NiceGUI
Open Interpreter
Python
Reflex
Rio
Stakpak
SuperAGI SuperCoder
Union Pandera
Zuplo
txtai

Integrations

APIGen
AppSignal
Azure Marketplace
BudgetML
DataFast
Diploi
JarvisLabs.ai
Java
Kotlin
Koyeb
NiceGUI
Open Interpreter
Python
Reflex
Rio
Stakpak
SuperAGI SuperCoder
Union Pandera
Zuplo
txtai
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