Top 12 Open-Source Alternatives to Quarkus

The top open-source alternatives to Quarkus are Guava, Micronaut Framework, and RxJava. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Guava Landing Page
1

Guava

Google core libraries for Java 6+.
Pricing:
- Open Source
#Application And Data #Web Frameworks #Languages & Frameworks 19 social mentions
Micronaut Framework Landing Page
2

Micronaut Framework

Build modular easily testable microservice & serverless apps
Pricing:
- Open Source
#Web Frameworks #Developer Tools #Runtime 36 social mentions
RxJava Landing Page
3

RxJava

RxJava – Reactive Extensions for the JVM is a library for composing asynchronous and event-based programs using observable sequences.
Pricing:
- Open Source
#Application And Data #Web Frameworks #Languages & Frameworks
Django Landing Page
4

Django

The Web framework for perfectionists with deadlines
Pricing:
- Open Source
#Python Web Framework #Python MVC Framework #Web Frameworks 14 social mentions
vert.x Landing Page
5

vert.x

From Wikipedia, the free encyclopedia
Pricing:
- Open Source
#Web Frameworks #Developer Tools #Runtime 26 social mentions
Apache POI Landing Page
6

Apache POI

Application and Data, Languages & Frameworks, and Java Tools
Pricing:
- Open Source
#Application And Data #Languages & Frameworks #Java Tools 6 social mentions
FastAPI Landing Page
7

FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.
Pricing:
- Open Source
- Free
#Developer Tools #API Tools #Python Programming 235 social mentions
Ruby on Rails Landing Page
8

Ruby on Rails

Ruby on Rails is an open source full-stack web application framework for the Ruby programming...
Pricing:
- Open Source
#Developer Tools #Web Frameworks #Frameworks (Full Stack) 119 social mentions
Apache FreeMarker Landing Page
9

Apache FreeMarker

Java template engine; generates HTML web pages, e-mails, configuration files, source code, etc. from template files and the data your application provides.
Pricing:
- Open Source
#Application And Data #Web Frameworks #Languages & Frameworks 8 social mentions
Javalin Landing Page
10

Javalin

Simple REST APIs for Java and Kotlin
Pricing:
- Open Source
#Web Frameworks #Developer Tools #Python Web Framework 33 social mentions
Flask Landing Page
11

Flask

a microframework for Python based on Werkzeug, Jinja 2 and good intentions.
Pricing:
- Open Source
#Python Web Framework #Web Frameworks #Developer Tools 42 social mentions
Lombok Landing Page
12

Lombok

Application and Data, Languages & Frameworks, and Java Tools
Pricing:
- Open Source
#Web Frameworks #Application And Data #Languages & Frameworks 49 social mentions