Lucene++ is an up to date C++ port of the popular Java Lucene library, a high-performance, full-featured text search engine.

LucenePlusPlus - C++ port of the popular Java Lucene library

Opencsv is an easy-to-use CSV (comma-separated values) parser library for Java. Opencsv supports all the basic CSV-type things like Arbitrary numbers of values per line, Ignoring commas in quoted elements, Configurable separator and quote characters and lot more.



Opencsv - Easy-to-use CSV (comma-separated values) parser library for Java

Simple Java Mail is the simplest to use lightweight mailing library for Java, while being able to send complex emails including authenticated socks proxy(!), attachments, embedded images, custom headers and properties, robust address validation, build pattern and even DKIM signing and external configuration files with property overriding, Spring support and Email conversion tools. Just send your emails without dealing with RFC's.

Simple Java Mail - Simple API, Complex Emails (JavaMail smtp wrapper)

Mutiny places events at the core of its design. With Mutiny, you observe events, react to them, and create elegant and readable processing pipelines. Mutiny is the perfect companion to tame the asynchronous nature of applications with non-blocking I/O. Declaratively compose operations, transform data, enforce progress, recover from failures and more. 
 
 Mutiny can be used in any asynchronous application such as event-driven microservices, message-based applications, network utilities, data stream processing, and reactive applications.

Mutiny places events at the core of its design. With Mutiny, you observe events, react to them, and create elegant and readable processing pipelines. Mutiny is the perfect companion to tame the asynchronous nature of applications with non-blocking I/O. Declaratively compose operations, transform data, enforce progress, recover from failures and more. 

Mutiny - An Intuitive Event-Driven Reactive Programming Library for Java

Proxool is a Java connection pool. It transparently adds connection pooling to your existing JDBC driver. The performance of database connections could be monitored. It's easy to configure using the JDBC API, XML, or Java property files. It complies with the J2SE standards.

Proxool - Java connection pool

Commons-Collections seek to build upon the JDK classes by providing new interfaces, implementations and utilities.
 <ul><li>Bag interface for collections that have a number of copies of each object</li>
	<li>Buffer interface for collections that have a well defined removal order, like FIFOs</li>
	<li>BidiMap interface for maps that can be looked up from value to key as well and key to value</li>
	<li>MapIterator interface to provide simple and quick iteration over maps</li>
	<li>Type checking decorators to ensure that only instances of a certain type can be added</li>
	<li>Transforming decorators that alter each object as it is added to the collection</li>
	<li>Composite collections that make multiple collections look like one</li>
	<li>Ordered maps and sets that retain the order elements are added in, including an LRU based map</li>
	<li>Identity map that compares objects based on their identity (==) instead of the equals method</li>
	<li>Reference map that allows keys and/or values to be garbage collected under close control</li>
	<li>Many comparator implementations</li>
	<li>Many iterator implementations</li>
	<li>Adapter classes from array and enumerations to collections</li>
	<li>Utilities to test or create typical set-theory properties of collections such as union, intersection, and closure</li>
	</ul>

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.

Apache Commons - Alternative to Java collection

moss provides a simple, fast, persistable, ordered key-val collection implementation as a 100% golang library.moss stands for "memory-oriented sorted segments".

moss - A simple, fast, ordered, persistable, key-val storage library for golang

Fast, simple, reliable. HikariCP is a "zero-overhead" production ready JDBC connection pool. At roughly 90Kb, the library is very light.

HikariCP - A high-performance JDBC connection pool

REPOSE is an open-source RESTful HTTP proxy service that scales to the cloud. REPOSE provides the solution to common API processing tasks such as rate limiting, client authentication, versioning, and logging so that web service developers can focus on the unique features of their services. 
 
Repose can be run as a standalone application (either as a Linux service or using the JAR directly), or it can be deployed as a WAR file in a servlet container alongside your origin service. Repose can be run on the same server or on a different server, and it can be run across multiple servers for horizontal scaling. At its core, Repose is a proxy that allows services to use Enterprise Integration Patterns (EIP).

REPOSE is an open-source RESTful HTTP proxy service that scales to the cloud. REPOSE provides the solution to common API processing tasks such as rate limiting, client authentication, versioning, and logging so that web service developers can focus on the unique features of their services. 

Repose - The REstful PrOxy Service Engine

autoComplete.js is a simple pure vanilla Javascript library that's built for speed, high versatility and seamless integration with wide range of projects & systems. 

autoComplete.js - Simple autocomplete pure vanilla Javascript library

KivaKit is a set of integrated Java mini-frameworks that are potentially needed by any application or server. It extends the JDK to provide quick and easy solutions to common everyday software problems. It does this by providing new abstractions and APIs, and by simplifying existing APIs. It is composed of a number of nested sub-projects that are Java 11+ modules. These modules address different areas of concern in developing Java applications. The resources below will help you to get started.
 
KivaKit accelerates development and makes code simpler, safer and clearer. KivaKit increases modularity and code reuse. It supports enhancement to Application, Command line, Configuration, Logging, Email, Socket, FTP, Serialization and lot more.

KivaKit is a set of integrated Java mini-frameworks that are potentially needed by any application or server. It extends the JDK to provide quick and easy solutions to common everyday software problems. It does this by providing new abstractions and APIs, and by simplifying existing APIs. It is composed of a number of nested sub-projects that are Java 11+ modules. These modules address different areas of concern in developing Java applications. The resources below will help you to get started.

 KivaKit - Set of integrated Java mini-frameworks for everyday development. 

Skuber is a Scala client library for Kubernetes. It provides a fully featured, high-level and strongly typed Scala API for managing Kubernetes cluster resources (such as Pods, Services, Deployments, ReplicaSets, Ingresses etc.) via the Kubernetes REST API server. See the programming guide for more details.

Skuber - A Scala Kubernetes client library

Kel is an open source Platform as a Service (PaaS) from Eldarion, Inc. that makes it easy to manage web application deployment and hosting through the entire lifecycle from development through testing to production. It adds components and tools on top of Kubernetes that help developers manage their application infrastructure. Kel builds on Eldarion's 7+ years experience running one of the leading Python and Django PaaSes.

pykube - Python client library for Kubernetes

Bt is a lightweight framework for P2P-lovers and enthusiastic BitTorrent researchers, perfect choice for light enterprise and home usage and experimentation. It offers good performance, reliability and is highly customizable. With Bt you can create a production-grade BitTorrent client in a matter of minutes. Bt is still in its' early days, but is actively developed and designed with stability and maintainability in mind.

Bt - Java BitTorrent Done Right!

CSVeed is a Java library for reading Comma Separated Value (CSV) files and exposing those either as Rows or Java Beans. It is a Java toolkit for mapping CSV-to-Bean mapping and vice versa.

CSVeed - Light-weight, easy-to-use Java-based CSV utility

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