Scala Asynchronous

Open-source Scala projects categorized as Asynchronous

Top 7 Scala Asynchronou Projects

  • ZIO

    ZIO — A type-safe, composable library for async and concurrent programming in Scala

    Project mention: I had a great experience with Scala and hopefully it will get more popular | /r/scala | 2023-07-11

    scala has 2 healthy and pretty complete lib ecosystems : check out typelevel and ZIO. Both are FP oriented, which might not be your cup of tea at first glance but I would encourage you to try em out ! Softest introduction would be to start with the typelevel cats library and build up from there. The excellent Scala with Cats will ease you softly into an FP mindset. It's a bit dated and for scala 2 only but translating to Scala 3 is a very good exercise if you feel so inclined !

  • cats-effect

    The pure asynchronous runtime for Scala

    Project mention: A question about Http4s new major version | /r/scala | 2023-04-25

    Those benchmarks are using a snapshot version of cats-effect. I don't know where that one comes from, but previously they were using a snapshot from which had some issues (3.5-6581dc4, 70% performance degradation), which have since been resolved (see that PR for more info and comparative benchmarks).

  • Onboard AI

    Learn any GitHub repo in 59 seconds. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at

  • sttp

    The Scala HTTP client you always wanted!

  • Scala Async

    An asynchronous programming facility for Scala

  • ReactiveMongo

    :leaves: Non-blocking, Reactive MongoDB Driver for Scala

  • Play WS

    Standalone Play WS, an async HTTP client with fluent API

  • fs2-kafka

    Kafka client for functional streams for scala (fs2) (by Spinoco)

  • InfluxDB

    Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-07-11.

Scala Asynchronous related posts


What are some of the best open-source Asynchronou projects in Scala? This list will help you:

Project Stars
1 ZIO 3,902
2 cats-effect 1,880
3 sttp 1,393
4 Scala Async 1,137
5 ReactiveMongo 845
6 Play WS 219
7 fs2-kafka 79
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