Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Koloboke Compile: all-new way to specialize collections in Java launched in 2016; newer entries below may have overtaken it.

1. 1
   Purely Functional Data Structures▲61

   A guide to functional programming

   2016 · amazon.com · its alternatives →

2. 2
   Grokking Algorithms▲77

   An illustrated guide for programmers

   2016 · amazon.com · its alternatives →

3. 3
   Refactoring to Collections ▲73

   Never write another loop again

   2016 · adamwathan.me · its alternatives →

4. 4
   99 Bottles of OOP▲66

   A practical guide to object oriented design

   2016 · sandimetz.com · its alternatives →

5. 5
   Grokking Algorithms▲70

   An illustrated guide for programmers & other curious people

   2016 · adit.io · its alternatives →

6. 6
   Tail Recursion Optimization for the JVM▲107

   Optimizer library for tail recursive calls in Java bytecode - Sipkab/jvm-tail-recursion

   2020 · github.com · its alternatives →

7. 7DA
   Docbag – an open-source document generation library written in Java▲6

   2014 · docbag.org · its alternatives →

8. 8AC
   A Cheatsheet for funcy sequence, collections and functional stuff▲9

   2016 · funcy.readthedocs.io · its alternatives →

9. 9
   Extend built-in Python collections with LINQ-for-objects style methods▲15

   ⚡🐍 Extends built-in Python collections with LINQ-style methods - borzunov/dontasq

   2015 · github.com · its alternatives →

10. 10
    Stencil▲9

    A Compiler for Web Components

    2017 · stenciljs.com · its alternatives →

11. 11OP
    Object Playground - The definitive guide to object-oriented JavaScript▲5

    2013 · objectplayground.com · its alternatives →

12. 12
    JsonTree, a tool for turning JSON data into a collapsible html tree▲9

    A lightweight vanilla Javascript micro-library for making collapsible trees with JSON - MaxLeiter/jsonTree

    2016 · github.com · its alternatives →

13. 13RJ
    RefRem, JVM Painless Compilation to Native Code▲5

    2020 · refrem.com · its alternatives →

14. 14KA
    Kweb, a Kotlin web framework based on the observer pattern▲5

    2019 · docs.kweb.io · its alternatives →

15. 15AB
    A Book about Lambdas on Java (+Maven) Using Lambada▲5

    2016 · ingenieux.gitbooks.io · its alternatives →

16. 166S
    6gunz – spreadsheet / programming language / microservices framework▲9

    2018 · 6gu.nz · its alternatives →

17. 17
    Coderviews▲7

    A real-time, collaborative compiler.

    2017 · its alternatives →

18. 18
    Fuge, an Erlang Port of GitHub's Scientist Library▲6

    An Erlang library for carefully refactoring critical paths - sthadka/fuge

    2016 · github.com · its alternatives →

19. 19
    An open-source PDF document generation library in java▲8

    Solution for rapid development of specific enterprise software - openlowcode/Open-Lowcode

    2019 · github.com · its alternatives →

20. 20LS
    Listifi – Sharable Lists▲5

    2021 · listifi.app · its alternatives →

21. 21
    Core Java▲3

    A Power-Users Guide to Java

    2016 · dzone.com · its alternatives →

22. 22PR
    Programmable Recipes with Markdown, JavaScript and Handlebars▲5

    2020 · programmablerecipes.com · its alternatives →

23. 23AA
    Awl, a toy Lisp language written in C and transpiled to JavaScript▲8

    2014 · skepsi.me · its alternatives →

24. 24
    ExtractBench, an open-source schema extraction benchmark▲6

    ExtractBench - A Benchmark for Schema-Guided Enterprise Document Extraction - run-llama/ExtractBench

    Aug 2026 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →