Simulacrum VS ScalaTest

Compare Simulacrum vs ScalaTest and see what are their differences.


First class syntax support for type classes in Scala (by typelevel)


A testing tool for Scala and Java developers (by scalatest)
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Simulacrum ScalaTest
1 0
922 990
-0.2% 0.7%
4.6 9.3
24 days ago about 1 month ago
Scala Scala
GNU General Public License v3.0 or later Apache License 2.0
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.


Posts with mentions or reviews of Simulacrum. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-08-10.
  • Friction-less scala - Tell us what is causing friction in your day-to-day life with Scala
    14 projects | | 10 Aug 2021
    The Cats ecosystem offers mature named abstractions providing algebraic laws virtually identical to those offered by Haskell and PureScript and that have stood the test of time, at the cost of relying on a "design pattern" approach to implementation you have to squint a bit to see ("typeclasses" based on higher-kinded types and implicit arguments) and that sometimes doesn't play nicely with Scala's colored local type inference. The selling point of this, coupled with parametricity ("tagless-final style"), is the ability to reason algebraically about your code.


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

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

What are some alternatives?

When comparing Simulacrum and ScalaTest you can also consider the following projects:

Specs2 - Software Specifications for Scala

ScalaCheck - Property-based testing for Scala

Testcontainers-scala - The project repository has moved to

ScalaMeter - Microbenchmarking and performance regression testing framework for the JVM platform.

Mockito Scala - Mockito for Scala language

ScalaMock - Native Scala mocking framework

Scalaz - Principled Functional Programming in Scala

Ammonite-Ops - Scala Scripting

Shapeless - Generic programming for Scala

Gatling - Modern Load Testing as Code

FS2 - Compositional, streaming I/O library for Scala

cornichon - Scala DSL for testing HTTP JSON API