kite vs Quasar

kite

Lightweight service-based PubSub, RPC and public APIs in Java (by teris-io)

Distributed Applications

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Quasar

Fibers, Channels and Actors for the JVM (by puniverse)

Distributed Applications Java Jvm Fibers Actors Concurrency

Source Code

docs.paralleluniverse.co

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kite		Quasar
	Project
-	Mentions	6
3	Stars	4,548
-	Growth	0.2%
0.0	Activity	0.0
about 5 years ago	Latest Commit	4 months ago
Java	Language	Java
MIT License	License	GNU General Public License v3.0 or later

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

kite

Posts with mentions or reviews of kite. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning kite yet.
Tracking mentions began in Dec 2020.

Quasar

Posts with mentions or reviews of Quasar. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-09-16.

Java 21 makes me like Java again
22 projects | news.ycombinator.com | 16 Sep 2023

Java 21 doesn't retrofit green threads though. Quasar [0] is a library that implemented fibers for Java and the main developer pron has joined the OpenJDK development team. All that was necessary for first party support is to make the JDK libraries yield when blocking.
Adopting async isn't impossible at all, there is very little demand for it.
[0] https://docs.paralleluniverse.co/quasar/
Lies we tell ourselves to keep using Golang
11 projects | /r/programming | 30 Dec 2022

Third party options have been around for nearly a decade now: https://docs.paralleluniverse.co/quasar/
Picking up Go as a Java dev—what could possibly go wrong?
3 projects | /r/golang | 12 Dec 2022

Quasar Fiber (https://docs.paralleluniverse.co/quasar/) is the equivalent implementation of goroutine in Java.
Helidon Nima - First Framework built from the ground up for Project Loom
1 project | /r/java | 26 Aug 2022

Even Loom architect Ron Pressler had something else in mind with his earlier prototype Quasar, with a spaceship demo.
Thread Pools on the JVM
2 projects | news.ycombinator.com | 19 Jul 2021
DoorDash: Migrating From Python to Kotlin for Our Backend Services
13 projects | /r/programming | 5 May 2021

I'd say because of Erlang. Loom's architect was building a bytecode-modifying (with a javaagent) lib named Quasar before he joined Oracle. The project page mentions a news titled "Introductory blog post: Erlang (and Go) in Clojure (and Java), Lightweight Threads, Channels and Actors for the JVM." in May 2, 2013.

What are some alternatives?

When comparing kite and Quasar you can also consider the following projects:

Bt - BitTorrent library and client with DHT, magnet links, encryption and more

Vert.x - Vert.x is a tool-kit for building reactive applications on the JVM

ScaleCube - Microservices library - scalecube-services is a high throughput, low latency reactive microservices library built to scale. it features: API-Gateways, service-discovery, service-load-balancing, the architecture supports plug-and-play service communication modules and features. built to provide performance and low-latency real-time stream-processing

Akka - Build highly concurrent, distributed, and resilient message-driven applications on the JVM

Orbit - Orbit - Virtual actor framework for building distributed systems

Apache ZooKeeper - Apache ZooKeeper

JGroups - The JGroups project

Zuul - Zuul is a gateway service that provides dynamic routing, monitoring, resiliency, security, and more.

Ribbon - Ribbon is a Inter Process Communication (remote procedure calls) library with built in software load balancers. The primary usage model involves REST calls with various serialization scheme support.

Apache Storm - Apache Storm

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