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Top 23 Recursion Open-Source Projects
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bbot is a recursive internet scanner that supports Python-based modules.
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InfluxDB
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algodeck
An Open-Source Collection of Flash Cards to Help You Preparing Your Algorithms & Data Structures and System Design Interviews 💯
I started with these decks:
https://github.com/teivah/algodeck
https://github.com/teivah/designdeck
Essentially I'd have a question like "invert a binary tree", "implement union-find", or "structure of a topological sort". All of these are small enough that I can keep them in my head.
For small algorithms I would just regurgitate the code line-for-line in my head. For more complex ones I would just go over the structure (not actual code), e.g. I know that topological sort can use a stack or queue, you need to track indegree, add nodes to the stack/queue when their indegree == 1, and so on.
I also used this to help learn (and really understand) common runtimes which helped me when deriving the runtimes of my own algorithms.
Since I started with premade decks I had to look at lot of things up during my walks, but that slowed down as towards the end of my studying.
I did all this to prep for interview (which I wrote about on my blog: https://sjer.red/blog/2024/job-hunt/) -- I would say it worked fairly well for me though you definitely need to pair it with LeetCode or similar.
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awesome-functional-programming
Yet another resource for collecting articles, videos etc. regarding functional programming
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glom
☄️ Python's nested data operator (and CLI), for all your declarative restructuring needs. Got data? Glom it! ☄️
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HypeScript
🐬 A simplified implementation of TypeScript's type system written in TypeScript's type system
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Project-Euler-solutions
Runnable code for solving Project Euler problems in Java, Python, Mathematica, Haskell. (by nayuki)
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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Cloak
A mini-preprocessor library to demostrate the recursive capabilites of the preprocessor (by pfultz2)
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RecursiveArrayTools.jl
Tools for easily handling objects like arrays of arrays and deeper nestings in scientific machine learning (SciML) and other applications
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Data-Structures-and-Algorithms-in-Java-2nd-Edition-by-Robert-Lafore
Solutions of Data Structures and Algorithms in Java 2nd Edition by Robert Lafore. Adding practice problems and solutions.
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Recursion-Tree-Visualizer
A simple python package that helps to visualise any recursive function by adding a single line of code.
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cascade
A library of continuation-passing, thunk-producing versions of many Clojure core functions. (by lilactown)
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Occurify
A powerful and intuitive .NET library for defining, filtering, transforming, and scheduling instant and period timelines.
🔗 You can find the full source code for Occurify on GitHub.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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).
Recursion discussion
Recursion related posts
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Show HN: Framework for LLM Iterative Refinement Until Mathematical Convergence
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Glom – Restructuring data, the Python way
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A simplified implementation of TypeScript's type system written in TypeScript's
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Functions and algorithms implemented purely with TypeScript's type system
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Functions and algorithms implemented purely with TypeScript's type system
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Functions and algorithms implemented purely with TypeScript's type system
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Plain C API design, the real world Kobayashi Maru test
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A note from our sponsor - SaaSHub
www.saashub.com | 13 Jul 2025
Index
What are some of the best open-source Recursion projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | bbot | 8,746 |
| 2 | algodeck | 5,750 |
| 3 | awesome-functional-programming | 3,493 |
| 4 | glom | 2,027 |
| 5 | HypeScript | 1,959 |
| 6 | Project-Euler-solutions | 1,933 |
| 7 | meta-typing | 1,570 |
| 8 | You-Dont-Need-Loops | 1,160 |
| 9 | Cloak | 947 |
| 10 | wild-wild-path | 730 |
| 11 | SamsungPractice | 418 |
| 12 | scriptum | 382 |
| 13 | fs_extra | 318 |
| 14 | RecursiveArrayTools.jl | 223 |
| 15 | Data-Structures-and-Algorithms-in-Java-2nd-Edition-by-Robert-Lafore | 205 |
| 16 | Recursion-Tree-Visualizer | 113 |
| 17 | yaya | 89 |
| 18 | PSTree | 86 |
| 19 | recursive-variant | 82 |
| 20 | cascade | 75 |
| 21 | Occurify | 60 |
| 22 | wild-wild-utils | 38 |
| 23 | SwiftUI-Fractals | 33 |
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