ASP.NET SignalR is a library for ASP.NET developers that makes it incredibly simple to add real-time web functionality to your applications. It's the ability to have your server-side code push content to the connected clients as it happens, in real-time. SignalR also provides a very simple, high-level API for doing server to client RPC (call JavaScript functions in your clients' browsers from server-side .NET code) in your ASP.NET application.

SignalR - Incredibly simple real-time web for .NET

pac4j  is a Java security engine to authenticate users, get their profiles and manage their authorizations in order to secure Java web applications. It supports most authentication mechanisms: OAuth (Facebook, Twitter, Google, Yahoo...), CAS, HTTP (form, basic auth...), OpenID, SAML, Google App Engine, OpenID Connect, JWT, LDAP, RDBMS, MongoDB and Stormpath and authorization checks.


pac4j - The security engine to protect all your Java web applications

The Atmosphere Framework contains client and server side components for building Asynchronous Web Applications. It transparently supports WebSockets, Server Sent Events (SSE), Long-Polling, HTTP Streaming (Forever frame) and JSONP. Its mission is to make real time apps possible in every browser, library and mobile device, blurring the differences between the different transport mechanisms.
 
The Atmosphere Framework Stack works on all Servlet based servers, Spring Boot and frameworks like Netty, Play! Framework and Vert.x. We support a variety of extensions like Apache Kafka, Hazelcast, RabbitMQ, Redis and many more.

The Atmosphere Framework contains client and server side components for building Asynchronous Web Applications. It transparently supports WebSockets, Server Sent Events (SSE), Long-Polling, HTTP Streaming (Forever frame) and JSONP. Its mission is to make real time apps possible in every browser, library and mobile device, blurring the differences between the different transport mechanisms.

Atmosphere - Realtime Client Server Framework for the JVM

ROME is an set of Java tools for parsing, generating and publishing RSS and Atom feeds. The core ROME library depends only on the JDOM XML parser and supports parsing, generating and converting all of the popular RSS and Atom formats including RSS 0.90, RSS 0.91 Netscape, RSS 0.91 Userland, RSS 0.92, RSS 0.93, RSS 0.94, RSS 1.0, RSS 2.0, Atom 0.3, and Atom 1.0. You can parse to an RSS object model, an Atom object model or an abstract SyndFeed model that can model either family of formats. 
 It provides API to generate, consume and convert RSS feeds.

ROME is an set of Java tools for parsing, generating and publishing RSS and Atom feeds. The core ROME library depends only on the JDOM XML parser and supports parsing, generating and converting all of the popular RSS and Atom formats including RSS 0.90, RSS 0.91 Netscape, RSS 0.91 Userland, RSS 0.92, RSS 0.93, RSS 0.94, RSS 1.0, RSS 2.0, Atom 0.3, and Atom 1.0. You can parse to an RSS object model, an Atom object model or an abstract SyndFeed model that can model either family of formats.

ROME

Guava is a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, functional types, an in-memory cache, and APIs/utilities for concurrency, I/O, hashing, primitives, reflection, string processing, and much more. 
It is memory efficient. Its most interesting class is <A HREF="http://google-collections.googlecode.com/svn/trunk/javadoc/com/google/common/collect/MapMaker.html" target="_blank">MapMaker</A>, which is a ConcurrentMap builder, providing any combination of these features: soft or weak keys, soft or weak values, timed expiration, and on-demand computation of values. Check out their video in <A HREF="http://www.youtube.com/watch?v=ZeO%5FJ2OcHYM" target="_blank">Youtube</A>.

Guava is a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, functional types, an in-memory cache, and APIs/utilities for concurrency, I/O, hashing, primitives, reflection, string processing, and much more.

Guava - Google Core Libraries for Java

Britecharts is a client-side reusable Charting Library based on D3.js v4 that offers easy and intuitive use of charts and components that can be composed together to create amazing visualizations.Britecharts components have been written in ES2016 with a Test Driven methodology, so they are fully tested, and we are committed to keeping them that way.

Britecharts - Client-side reusable Charting Library based on D3

A powerful & easy to use chart library for Android. It supports many different chart types: LineChart, BarChart (vertical, horizontal, stacked, grouped), PieChart, ScatterChart, CandleStickChart (for financial data), RadarChart (spider web chart), BubbleChart. It can smooth rendering for up to 10.000 data points in Line- and BarChart.

MPAndroidChart - A powerful Android chart view / graph view library

Searchkit is a tool allowing you can quickly build a search experience using predefined GraphQL resolvers and React components. Built on the top of Apollo GraphQL, React & Elasticsearch, Searchkit makes building a high-quality API a lot easier. The library provides GraphQL resolvers dedicated to handling the most common use cases you could think of when using filtering oriented API beginning with basic operations such as simple querying, ending on more tricky ones such as efficient facet filtering or pagination.

Searchkit - GraphQL API & React UI components for Elasticsearch.

Tokio is an asynchronous runtime for the Rust programming language. It provides the building blocks needed for writing network applications. It gives the flexibility to target a wide range of systems, from large servers with dozens of cores to small embedded devices. It provides a multi-threaded, work-stealing scheduler. Applications can process hundreds of thousands of requests per second with minimal overhead.
 
async/await reduces the complexity of writing asynchronous applications. Paired with Tokio's utilities and vibrant ecosystem, writing applications is a breeze.

Tokio is an asynchronous runtime for the Rust programming language. It provides the building blocks needed for writing network applications. It gives the flexibility to target a wide range of systems, from large servers with dozens of cores to small embedded devices. It provides a multi-threaded, work-stealing scheduler. Applications can process hundreds of thousands of requests per second with minimal overhead.

Tokio - Platform for writing fast networking code in Rust

Xerces-C++ is a validating XML parser written in a portable subset of C++. Xerces-C++ makes it easy to give your application the ability to read and write XML data. A shared library is provided for parsing, generating, manipulating, and validating XML documents using the DOM, SAX, and SAX2 APIs.

Xerces-C++ is a validating XML parser written in a portable subset of C++. Xerces-C++ makes it easy to give your application the ability to read and write XML data.

Xerces-C++

SMSLib is a Java library which allows you to send/receive SMS messages via a compatible GSM modem or GSM phone. SMSLib also supports some bulk sms operators (for outbound messaging only). Its feature include
 <ul>
	<li>Supports GSM phones and GSM modems connected via serial port interfaces or IP interfaces.</li>
	<li>Works with PDU/TEXT protocols.</li>
	<li>Supports Inbound & Outbound simple text messages.</li>
	<li>Works with 7bit, 8bit and UCS2 (Unicode) message encodings.</li>
	<li>Supports Inbound & Outbound big (multipart) messages.</li>
	<li>Flash messaging.</li>
	<li>Outbound messages with port information / addressing.</li>
	<li>Outbound WAP PUSH SI messages.</li>
	<li>Status (Delivery) Report messages.</li>
	<li>Basic GSM information available: Modem, Manufacturer, S/W revision, Signal level, etc.</li>
	<li>Supports a few bulk operators, using http/https protocols.</li>
	<li>Support the SMPP protocol.</li>
	<LI>Multiple Gateways</LI>
	<LI>Sending Priorities</LI>
	<LI>Synchronous / Asynchronous Sending and Receiving messages</LI>
	<LI>Callbacks</LI>
	<LI>Custom Sender ID</LI>
	<LI>Encrypted Messages</LI>
</ul>

SMSLib is a Java library which allows you to send/receive SMS messages via a compatible GSM modem or GSM phone. SMSLib also supports some bulk sms operators (for outbound messaging only).

SMSLib - Java SMS library

bitcoinj is a library for working with the Bitcoin protocol. It can maintain a wallet, send/receive transactions without needing a local copy of Bitcoin Core and has many other advanced features.
 
Highly optimised lightweight simplified payment verification (SPV) mode. In this mode, only a small part of the block chain is downloaded, making bitcoinj suitable for usage on constrained devices like smartphones or cheap virtual private servers.

bitcoinj is a library for working with the Bitcoin protocol. It can maintain a wallet, send/receive transactions without needing a local copy of Bitcoin Core and has many other advanced features.

Bitcoinj - A library for working with Bitcoin

Picasso is a powerful image downloading and caching library for Android. Images add much-needed context and visual flair to Android applications. Picasso allows for hassle-free image loading in your application—often in one line of code!
 
<code>
Picasso.with(context).load("http://i.imgur.com/DvpvklR.png").into(imageView);
</code>

Picasso is a powerful image downloading and caching library for Android. Images add much-needed context and visual flair to Android applications. Picasso allows for hassle-free image loading in your application—often in one line of code!

Picasso - A powerful image downloading and caching library for Android

Jongo helps to query in Java as in Mongo shell. Mongo query language isn't available in Java, Jongo fixes that. Copy/paste your queries to string. It provides support to save and find objects into and from collections. You can use embedded Jackson marshalling or create your own.

Jongo - Query in Java as in Mongo shell

ReactiveMongo is a scala driver that provides fully non-blocking and asynchronous I/O operations. It allows you to stream data both into and from your MongoDB servers.

ReactiveMongo - Asynchronous and Non-Blocking Scala Driver for MongoDB

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