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Top 23 Array Open-Source Projects
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MJExtension
A fast, convenient and nonintrusive conversion framework between JSON and model. Your model class doesn't need to extend any base class. You don't need to modify any model file.
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SaaSHub
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algodeck
An Open-Source Collection of Flash Cards to Help You Preparing Your Algorithms & Data Structures and System Design Interviews 💯
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vortex
An extensible, state-of-the-art framework for columnar compression, and the fastest FOSS columnar file format. Formerly at @spiraldb, now an Incubation Stage project at LFAI&Data, part of the Linux Foundation.
Project mention: Show HN: Continuous Nvidia CUDA PC Sampling Profiler | news.ycombinator.com | 2026-06-15Thanks! I think most performance debugging happens during development, what we're bringing to the table is exposure of system behavior in production which often diverges from production because of changes in the shape of workloads from development which are often simplistic and synthetic. So I'd say its late-stage performance debugging and production observability combined that makes this useful.
Stay tuned for a follow on post where we show how we used this to optimize an FSST decompression kernel for [vortex](https://github.com/vortex-data/vortex).
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hypersistence-utils
The Hypersistence Utils library (previously known as Hibernate Types) gives you Spring and Hibernate utilities that can help you get the most out of your data access layer.
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collection
:card_index_dividers: A PHP library for representing and manipulating collections. (by ramsey)
Project mention: PHP collection libraries in 2026: doctrine, illuminate, loophp, noctud, ramsey | dev.to | 2026-04-28Framework-free, PHP 8.1 to 8.3, want runtime type checks: ramsey/collection. Expect a minimal API surface (sub-collections don't compose) and #133 for indexed removals.
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deep-object-diff
Deep diffs two objects, including nested structures of arrays and objects, and returns the difference. ❄️
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mlib
Library of generic and type safe containers in pure C language (C99 or C11) for a wide collection of container (comparable to the C++ STL).
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NetFabric.Hyperlinq
High performance LINQ implementation with minimal heap allocations. Supports enumerables, async enumerables, arrays and Span<T>.
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vscode-data-preview
Data Preview 🈸 extension for importing 📤 viewing 🔎 slicing 🔪 dicing 🎲 charting 📊 & exporting 📥 large JSON array/config, YAML, Apache Arrow, Avro, Parquet & Excel data files
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hashmap
HashMap JavaScript class for Node.js and the browser. The keys can be anything and won't be stringified (by flesler)
Array discussion
Array related posts
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Show HN: Continuous Nvidia CUDA PC Sampling Profiler
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Thinking in an Array Language
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KlongPy
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Show HN: KlongPy now supports PyTorch and autograd
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Show HN: KlongPy array language now supports autograd
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Distributed SQL engine for ultra-wide tables
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Vortex: An extensible, state of the art columnar file format
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A note from our sponsor - SaaSHub
www.saashub.com | 21 Jun 2026
Index
What are some of the best open-source Array projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | MJExtension | 8,505 |
| 2 | algodeck | 5,819 |
| 3 | map | 4,301 |
| 4 | vortex | 3,028 |
| 5 | Collections-C | 2,995 |
| 6 | core | 2,830 |
| 7 | hypersistence-utils | 2,658 |
| 8 | PyCUDA | 2,046 |
| 9 | ts-belt | 1,197 |
| 10 | collection | 1,197 |
| 11 | array-to-xml | 1,197 |
| 12 | pyopencl | 1,140 |
| 13 | deep-object-diff | 1,140 |
| 14 | mlib | 1,127 |
| 15 | NetFabric.Hyperlinq | 901 |
| 16 | c-vector | 884 |
| 17 | structurae | 731 |
| 18 | loopy | 630 |
| 19 | vscode-data-preview | 593 |
| 20 | Arrayy | 488 |
| 21 | blitz | 417 |
| 22 | massiv | 414 |
| 23 | hashmap | 383 |