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134 Stars 9 Forks MIT License 311 Commits 1 Opened issues


A mix of random small libraries for Kotlin, the smallest reside here until big enough for their own repository.

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Random small libraries, usually extensions making other libraries happier. Versions later than 2.x are for JDK 8 and newer only.

Maven Dependency

Each module has its own set of dependencies. The basic pattern is:


compile "uy.kohesive.klutter:klutter-moduleName:3.0.+"



See all modules and current versions on


In Klutter 3.x some modules were removed as functionality and direct support for Kotlin Couroutines or Kodein has been added to libraries, or other changes have come along that make the module less useful.

|     Maven‑Artifact     |Topic| |------|------| |config-typesafe|Typesafe Config easier loader and access to configuration| |config-typesafe-kodein|Typesafe Config injection into Kodein 6.5 modules| |conversion|Type converters for primitive and common JDK types| |core|Core extension methods on strings, numbers, dates, URI Builder, better URL Encoding/Decoding| |db-jdbi-v2|See JDBI official support in 3.x| |db-jdbi-v3|Merged into JDBI official, 3.x snapshot and releases after March 7, 2017| |elasticsearch-1.7.x|REMOVED in Klutter 3.x| |elasticsearch-2.4.x|REMOVED in Klutter 3.x| |elasticsearch-5.x|REMOVED in Klutter 3.x| |elasticsearch-6.x|REMOVED in Klutter 3.x| |json-jackson-kodein|Jackson JSON w/Kotlin module Kodein 6.5 module| |netflix-graph|In memory graph building and compression/serialization. A wrapper adding schema, ordinal tracking, serialization with ordinals, and is much easier to use API| |reflect|Helpers for Kotlin reflection extending the kotlin-reflect dependency| |vertx3|REMOVED in Klutter 3.x, Vertx has native Kotlin Coroutine support now| |vertx3-kodein|REMOVED in Klutter 3.x, Vertx has native Kotlin Coroutine support now|

Recommended libraries:

Other libraries that we recommend a building blocks for Kotlin applications:

  • Kovert - invisible REST framework for Kotlin + Vert.x
  • Kodein - very easy yet powerful dependency injection in Kotlin, now supporting version 5.x

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