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Top 17 Scala Reactive Projects
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Akka
A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.
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InfluxDB
InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.
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~/project$ sbt run [info] welcome to sbt 1.10.6 (Ubuntu Java 17.0.14) [info] loading settings for project scala-api-heroku-build from plugins.sbt... [info] loading project definition from /home/alvin/repositories/devspotlight/heroku/scala/scala-api-heroku/project [info] loading settings for project root from build.sbt... [info] loading settings for project docs from build.sbt... [info] __ __ [info] \ \ ____ / /____ _ __ __ [info] \ \ / __ \ / // __ `// / / / [info] / / / /_/ // // /_/ // /_/ / [info] /_/ / .___//_/ \__,_/ \__, / [info] /_/ /____/ [info] [info] Version 3.0.6 running Java 17.0.14 [info] [info] Play is run entirely by the community. Please consider contributing and/or donating: [info] https://www.playframework.com/sponsors [info] --- (Running the application, auto-reloading is enabled) --- INFO p.c.s.PekkoHttpServer - Listening for HTTP on /[0:0:0:0:0:0:0:0]:9000 (Server started, use Enter to stop and go back to the console...)
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Reactive-kafka
Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.
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pekko
Build highly concurrent, distributed, and resilient message-driven applications using Java/Scala
Project mention: Hydro: Distributed Programming Framework for Rust | news.ycombinator.com | 2025-01-31Seems like it based on GH activity, but I don’t know for sure.
https://github.com/apache/pekko
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alpakka
Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.
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CodeRabbit
CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
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AkkaGRPC
A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
Scala Reactive discussion
Scala Reactive related posts
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Play Framework – Build Modern and Scalable Web Apps with Java and Scala
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Play Framework 2.9.0 Release Candidate
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Play (1) Linux manual page
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Scala opensource projects
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Play Framework for Java and Scala
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How does web developement process compare to java web developement ?
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Kalix: Move to the Cloud. Extend to the Edge. Go Beyond.
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A note from our sponsor - SaaSHub
www.saashub.com | 30 Apr 2025
Index
What are some of the best open-source Reactive projects in Scala? This list will help you:
# | Project | Stars |
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1 | Akka | 13,144 |
2 | Play | 12,564 |
3 | Lagom | 2,631 |
4 | Reactive-kafka | 1,416 |
5 | Akka HTTP | 1,336 |
6 | pekko | 1,340 |
7 | alpakka | 1,264 |
8 | Phantom | 1,046 |
9 | ReactiveMongo | 850 |
10 | topshell | 480 |
11 | OutWatch | 469 |
12 | AkkaGRPC | 432 |
13 | aecor | 324 |
14 | Pulsar4s | 230 |
15 | Play WS | 225 |
16 | lila-ws | 159 |
17 | Clickhouse-scala-client | 116 |