Scallop vs case-app

Scallop

a simple Scala CLI parsing library (by scallop)

Parsing

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case-app

Type-level & seamless command-line argument parsing for Scala (by alexarchambault)

Argument parsing Scala

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Scallop		case-app
	Project
1	Mentions	2
671	Stars	293
0.3%	Growth	-
5.3	Activity	7.1
about 1 month ago	Latest Commit	about 1 month ago
Scala	Language	Scala
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.

Scallop

Posts with mentions or reviews of Scallop. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-02-20.

Recommended CLI parsing libraries
5 projects | /r/scala | 20 Feb 2021

Scallop is great -- it allows you to wrap entire functions and routines inside calls which pass arguments (like --name) and use them.

case-app

Posts with mentions or reviews of case-app. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-07-11.

GitHub - stkeky/best-of-scala: 🏆 A ranked list of awesome Scala libraries. Updated weekly.
2 projects | /r/scala | 11 Jul 2023

If you mean command-line argument parsing, I come back to https://github.com/alexarchambault/case-app everytime 😃 I haven't found any other library that gets less in your way 90% of the time. Conversion to custom data types is done via implicits, but if you've worked with implicits before it's straight-forward.
Recommended CLI parsing libraries
5 projects | /r/scala | 20 Feb 2021

I'm a big fan of case-app: https://github.com/alexarchambault/case-app

What are some alternatives?

When comparing Scallop and case-app you can also consider the following projects:

Scopt - command line options parsing for Scala

zio-cli - Rapidly build powerful command-line applications powered by ZIO

Scala Parser Combinators - simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module

Apache Spark - Apache Spark - A unified analytics engine for large-scale data processing

decline - A composable command-line parser for Scala.

atto - friendly little parsers

best-of-scala - 🏆 A ranked list of awesome Scala projects. Updated weekly.

CLIST - Command Line Interface Scala Toolkit

picocli - Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.

Parboiled2 - A macro-based PEG parser generator for Scala 2.10+

Fast Parse - Writing Fast Parsers Fast in Scala