ShareJS - Collaborative editing in any app

•    Javascript

NOTE: ShareJS is now ShareDB. See here and here for more information. .

CUBRID - RDBMS Optimized for Web

•    C++

CUBRID is a relational database management system highly optimized for Web Applications, especially when complex web services process large amount of data and generate huge concurrent requests. CUBRID is being developed in C/C++. Includes HA, online incremental backup, Replication, Load balancing, Sharding, Caching and other features. It supports JDBC, PHP, ODBC/.NET, Ruby & Python APIs.

oh - A surprisingly powerful Unix shell

•    Go

Oh is a Unix shell. If you've used other Unix shells, oh should feel familiar. Where oh diverges from traditional Unix shells is in its programming language features.

concurrently - Run commands concurrently. Like `npm run watch-js & npm run watch-less` but better.

•    Javascript

Run multiple commands concurrently. Like npm run watch-js & npm run watch-less but better. I like task automation with npm but the usual way to run multiple commands concurrently is npm run watch-js & npm run watch-css. That's fine but it's hard to keep on track of different outputs. Also if one process fails, others still keep running and you won't even notice the difference.

sled - sled likes eating data: alpha modern embedded database

•    Rust

An alpha modern embedded database. We also support merge operators.

Apache JMeter - Pure Java application for load and functional testing

•    Java

Apache JMeter may be used to test performance both on static and dynamic resources (files, Servlets, Perl scripts, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types. You can use it to make a graphical analysis of performance or to test your server/script/object behavior under heavy concurrent load.

wrk - Modern HTTP benchmarking tool

•    C

wrk is a modern HTTP benchmarking tool capable of generating significant load when run on a single multi-core CPU. It combines a multithreaded design with scalable event notification systems such as epoll and kqueue .An optional LuaJIT script can perform HTTP request generation, response processing, and custom reporting. Details are available in SCRIPTING and several examples are located in scripts/.

Siege - Http load tester and benchmarking utility

•    C

Siege is an open source regression test and benchmark utility. It can stress test a single URL with a user defined number of simulated users, or it can read many URLs into memory and stress them simultaneously. The program reports the total number of hits recorded, bytes transferred, response time, concurrency, and return status. Siege supports HTTP/1.0 and 1.1 protocols, the GET and POST directives, cookies, transaction logging, and basic authentication. Its features are configurable on a per user basis.

Vibur Object Pool - Concurrent Java Object Pool

•    Java

Vibur Object Pool is a general-purpose concurrent Java object pool which provides both validating and non-validating pool implementations. The pool is built entirely using standard Java concurrency utilities, does not use any synchronized blocks/methods, and does not have any external dependencies. The pool is an excellent choice for pooling/caching of expensive to create Java objects such as database (or any other) socket connections and similar.

Node.JS - Builds Scalable Network Programs

•    Javascript

Node.js is a server-side JavaScript environment that uses an asynchronous event-driven model. It could handle thousands of concurrent connections. This allows Node.js to get excellent performance based on the architectures of many Internet applications. It is an evented I/O for V8, which is Google's open source JavaScript engine.

high-scale-lib

•    Java

A collection of Concurrent and Highly Scalable Utilities. These are intended as direct replacements for the java.util.* or java.util.concurrent.* collections but with better performance when many CPUs are using the collection concurrently.

ElixirBooks - List of Elixir books

Official Elixir starting guide that will take you through the language foundations. You will also explore how to build projects with Mix and OTP, and it will introduce you to more advanvced techniques suchs as meta-programming. Adoption is more than programming. Elixir is an exciting new language, but to successfully get your application from start to finish, you’re going to need to know more than just the language. You need the case studies and strategies in this book. Learn the best practices for the whole life of your application, from design and team-building, to managing stakeholders, to deployment and monitoring. Go beyond the syntax and the tools to learn the techniques you need to develop your Elixir application from concept to production.

Broadway - Concurrent and multi-stage data ingestion and data processing with Elixir

•    Elixir

Build concurrent and multi-stage data ingestion and data processing pipelines with Elixir. It allows developers to consume data efficiently from different sources, known as producers, such as Amazon SQS, Apache Kafka, Google Cloud PubSub, RabbitMQ, and others. Broadway takes the burden of defining concurrent GenStage topologies and provide a simple configuration API that automatically defines concurrent producers, concurrent processing, batch handling, and more, leading to both time and cost efficient ingestion and processing of data.

Zio - A type-safe, composable library for async and concurrent programming in Scala

•    Scala

ZIO is a zero-dependency Scala library for asynchronous and concurrent programming. It is powered by highly-scalable, non-blocking fibers that never waste or leak resources, ZIO lets you build scalable, resilient, and reactive applications that meet the needs of your business.

ali - Generate HTTP load and plot the results in real-time

•    Go

ali is a load testing tool capable of performing real-time analysis, inspired by vegeta and jplot. It comes with an embedded terminal-based UI where you can plot the metrics in real-time, so lets you perform real-time analysis on the terminal.

cloe - Cloe programming language

•    Go

Cloe is the timeless functional programming language. It aims to be simple and practical. Go 1.8+ is required.

GoBench - HTTP/HTTPS load testing and benchmarking tool

•    Go

GoBench is a HTTP/HTTPS load testing and benchmarking tool. Its requests hits and requests rate are 5X better than other testing tools.

fork - A lightweight solution for running code concurrently in PHP

•    PHP

This package makes it easy to run PHP concurrently. Behind the scenes, concurrency is achieved by forking the main PHP process to one or more child tasks. In this example, where we are going to call an imaginary slow API, all three closures will run at the same time.

Win32 Registry Activity Monitor

•    DotNet

A simple program written in Delphi that monitors registry activity on win32 systems. In short a registry key and class are statically added to the code, the program is then run and as changes are made by other applications to the key and all its sub keys the changes are logged an

A Concurrent Hashtable

•    DotNet

A hashtable implementation that allows simultaneous reads and writes from multiple threads. Also offering a concurrent Dictionary and WeakDictionary as hashtable specializations.