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Top 13 Scala Dotty Projects
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> 1) The language is too unstable
Thankfully not anymore. They got their act together and have been maintaining compatibility since Scala 3.0.0 has been released in May 2021, which is almost 4 years and counting.
https://github.com/scala/scala3/releases/tag/3.0.0
Scala 3.x is to remain compatible for the whole 3.x series (think of semantic versioning). There's no Scala 4 (breaking with Scala 3) in sight.
Also, Scala 3 and Scala 2.13 JARs are also compatible with each other, which helped with the transition.
> 2) The tooling around it is not the best
sbt may not be good. But Mill is much better than either Maven or Gradle. Especially Gradle. Bleep is also promising.
Scalafmt is widely used and liked. Scalafix -- the linter/fixer -- is used a bit less, but still of a good quality.
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ducktape
Automatic and customizable compile time transformations between similar case classes and sealed traits/enums, essentially a thing that glues your code. Scala 3 only. Or is it duct 🤔
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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dotty-patched
Eval library and patched Scala-3/Dotty compiler. Evaluating source code and trees at compile time hacking multi-staging programming
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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).
Scala Dotty discussion
Scala Dotty related posts
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dotty-cps-async 0.9.12 is out
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The case against Effect Systems (e.g., the IO data type)
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dotty-cps-async 0.9.11 is out. (bugfixes and experimental loom support)
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dotty-cps-async 0.9.9
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Issues setting up Scala 3 on Windows w/Coursier
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Opinions on implementing traits for validation with the help of a companion object
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Also dotty-cps-async 0.9.8 with scala-native support
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A note from our sponsor - InfluxDB
www.influxdata.com | 16 May 2025
Index
What are some of the best open-source Dotty projects in Scala? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | dotty | 6,017 |
| 2 | Scalafix | 852 |
| 3 | ducktape | 420 |
| 4 | scala3-example-project | 336 |
| 5 | scalaprops | 278 |
| 6 | scala-3-migration-guide | 236 |
| 7 | dotty-cps-async | 186 |
| 8 | scala3.g8 | 143 |
| 9 | functional-way | 129 |
| 10 | Inkuire | 91 |
| 11 | scala-3-crash-course | 35 |
| 12 | dotty-patched | 20 |
| 13 | advent-of-code-scala | 6 |
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InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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