Big Queue - A big, fast and persistent queue based on memory mapped file.

•    Java

---

A big, fast and persistent queue based on memory mapped file.

queue java-collections collections data-structure memory-mapped

Redisson - Redis based In-Memory Data Grid for Java

•    Java

---

Redisson - distributed Java objects and services (Set, Multimap, SortedSet, Map, List, Queue, BlockingQueue, Deque, BlockingDeque, Semaphore, Lock, AtomicLong, Map Reduce, Publish / Subscribe, Bloom filter, Spring Cache, Executor service, Tomcat Session Manager, Scheduler service, JCache API) on top of Redis server. Rich Redis client.

cache distributed-caching distributed-locks redis-client redis-cluster collections java-collections hashmap set queue

Eclipse Collections - Best Java Collection Framework

•    Java

---

Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API, additional types not found in the JDK like Bags, Multimaps, and set of utility classes that work with any JDK compatible Collections, Arrays, Maps, or Strings. The iteration protocol was inspired by the Smalltalk collection framework. It maximizes the power of Java 8 Lambda expressions and method references with rich APIs directly available on your collections.

collections java-collection collections-library utility data-structure

Buckets-JS - A complete, fully tested and documented data structure library written in pure JavaScript

•    Javascript

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Buckets is a complete, fully tested and documented data structure library written in pure JavaScript.

data-structures collections collection linked-list dictionary map multimap stack queue set bag binary-heap priority-queue binary-search binary-search-tree tree tree-structure buckets data structure linked list heap priority binary data-structure hashmap

typescript-collections - A generically typed set of collections for use with TypeScript

•    TypeScript

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It is a complete, fully tested data structure library written in TypeScript. This project uses TypeScript Generics so you need TS 0.9 and above.

typescript generics data structures collections linked list dictionary default multi binary search tree key value stack queue set bag heap priority array

JCTools - Java Concurrency Tools for the JVM

•    Java

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Java Concurrency Tools for the JVM. This project aims to offer some concurrent data structures currently missing from the JDK.

concurrency data-structures queues lock-free wait-free awesome collections java-collection data-structure

capsule - The Capsule Hash Trie Collections Library

•    Java

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More extensive tests and performance benchmarks will be added soon. The preliminary API for the immutable interfaces will be reworked as soon as possible as well. Snippets for other build tools and dependency management systems may vary slightly.

hashmap trie immutable immutable-collections persistent-data-structure hashset performance data-structure collections map list

Agrona - Library to build high-performance applications in Java and C++

•    Java

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Agrona provides a library of data structures and utility methods that are a common need when building high-performance applications in Java and C++. It supports Buffers, Map, Sets, Cache, Queues and lot more.

collections java-collection collections-library utility data-structure

Boon - Low Ceremony. High Productivity. A real boon to Java to developers!

•    Java

---

The main goal of Boon is to reduce the productivity delta between Java and Python/Groovy/Ruby. The idea is to just create a lower ceremony APIs. Less Java like APIs, and more getting things done quickly APIs. If reading a file takes one line of code in Ruby/Python/Groovy, then it will also in Java. If slice notation is part of those language, then Boon will have it to.

java-collections data-structure utility json-parser collections

collections - This package contains JavaScript implementations of common data structures with idiomatic interfaces

•    Javascript

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This package contains JavaScript implementations of common data structures with idiomatic iterfaces, including extensions for Array and Object. You can use these Node Packaged Modules with Node.js, Browserify, Mr, or any compatible CommonJS module loader. Using a module loader or bundler when using Collections in web browsers has the advantage of only incorporating the modules you need. However, you can just embed <script src="collections/collections.min.js"> and all of the collections will be introduced as globals. ⚠️ require("collections") is not supported.

collections data-structures observable list set map splay

DynamicData - Reactive collections based on Rx.Net

•    CSharp

---

Dynamic Data is a portable class library which brings the power of Reactive Extensions (Rx) to collections.Rx is extremely powerful but out of the box provides nothing to assist with managing collections. In most applications there is a need to update the collections dynamically. Typically a collection is loaded and after the initial load, asynchronous updates are received. The original collection will need to reflect these changes. In simple scenarios the code is simple. However, typical applications are much more complicated and may apply a filter, transform the original dto and apply a sort. Even with these simple every day operations the complexity of the code is quickly magnified. Dynamic data has been developed to remove the tedious code of dynamically maintaining collections. It has grown to become functionally very rich with at least 60 collection based operations which amongst other things enable filtering, sorting, grouping, joining different sources, transforms, binding, pagination, data virtualisation, expiration, disposal management plus more.

reactive-extensions reactive-collections rx dynamic-data c-sharp rx-observable

gs-collections - A supplement or replacement for the Java Collections Framework

•    Java

---

GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework. It provides replacements for ArrayList, HashSet, and HashMap optimized for performance and memory usage.

collections java-collection collections-library hashmap set list map

Redisson - Redis based In-Memory Data Grid for Java

•    Java

---

Redisson - Distributed and Scalable Java data structures (Set, SortedSet, Map, ConcurrentMap, List, Queue, Deque, Lock, AtomicLong, CountDownLatch, Publish / Subscribe, HyperLogLog) on top of Redis server. Advanced redis java client. It supports over 28+ data structures and services, Synchronous / asynchronous / reactive interfaces and lot more.

distributed collections locks distributed-locks cache

Apache Commons - Alternative to Java collection

•    Java

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Commons-Collections seek to build upon the JDK classes by providing new interfaces, implementations and utilities. It provides collection class like Identity map, Ordered map, Reference map, Composite collections, Bag interface etc.

java-collection library map utility

Koloboke - Java Collections till the last breadcrumb of memory and performance

•    Java

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A family of projects around collections in Java (so far). A carefully designed extension of the Java Collections Framework with primitive specializations and more. Java 6+. Apache 2.0 license.

java-collections koloboke annotation-processor primitive-specializations high-performance hashmap collections

icepick - Utilities for treating frozen JavaScript objects as persistent immutable collections

•    Javascript

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Utilities for treating frozen JavaScript objects as persistent immutable collections. Object.freeze() is a quick and easy way to get immutable collections in plain JavaScript. If you recursively freeze an object hierarchy, you have a nice structure you can pass around without fear of mutation. The problem is that if you want to modify properties inside this hierarchical collection, you have to return a new copy with the properties changed.

freeze frozen immutable persistent collections structural sharing update mori

BLKFlexibleHeightBar - Create condensing header bars like those seen in the Facebook, Square Cash, and Safari iOS apps

•    Objective-C

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BLKFlexibleHeightBar allows you to create header bars with flexible heights. Often, this sort of UI paradigm is used to hide "chrome" and make room for more content as a user is scrolling. This is seen in third party apps like Facebook and Square Cash, as well as first party apps like Safari. Due to this library's modular, extensible nature, you are not limited to any one look or any one feel. What UICollectionView does for presenting collections of data, BLKFlexibleHeightBar does for creating header bars.

pyrsistent - Persistent/Immutable/Functional data structures for Python

•    Python

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Pyrsistent is a number of persistent collections (by some referred to as functional data structures). Persistent in the sense that they are immutable. All methods on a data structure that would normally mutate it instead return a new copy of the structure containing the requested updates. The original structure is left untouched.

immutable datastructures functional

immutable-devtools - Chrome Dev Tools custom formatter for Immutable-js values

•    Javascript

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The Immutable library is fantastic, but inspecting immutable collections in Chrome's Dev Tools is awkward. You only see the internal data structure, not the logical contents. For example, when inspecting the contents of an Immutable List, you'd really like to see the items in the list.Chrome (v47+) has support for custom "formatters". A formatter tells Chrome's Dev Tools how to display values in the Console, Scope list, etc. This means we can display Lists, Maps and other collections, in a much better way.

immutable devtools chrome

Primitive Collections for Java

•    Java

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Primitive Collections for Java is a collections framework for primitive Java types. The framework supports all primitive types and includes bridges to the standard Java Collections Framework.