NetIRC2 is an easy-to-use .NET IRC client library. It supports all major features relevant to making a chat client or bot. It has full support for synchronization contexts. You can use it from a Windows Forms or WPF GUI thread and chat events will be automatically dispatched, allowing you to completely ignore multithreading. It uses byte arrays internally, so mixed encodings can be handled. The IrcClient class can even be used as a component in the Forms Designer. Because it speeds up connect times with some IRC servers, an Ident server is included as well.
CryptSharp provides a number of password crypt algorithms: BCrypt, MD5 (and Apache's htpasswd variant), PHPass (WordPress, phpBB, Drupal), SHA256, SHA512, and Traditional and Extended DES. It also includes Blowfish, SCrypt, and PBKDF2 for any HMAC (.NET's built-in PBKDF2 implementation supports only SHA-1). If you are looking to store passwords, odds are CryptSharp will have the algorithm you want.
JMapper-Framework allows you to pass data from one Java Bean to another dynamically with annotations and/or XML. You can create and enrich target objects, apply specific logic to the mapping, automatically manage the XML file, implement the 1-to-N and N-to-1 relationships, implement explicit conversions, apply inherited configurations, and more.
PHP GUI API is a package that renders HTML pages composed programmatically. It is designed in a similar fashion to Java's GUI package, but it is for HTML components rather than desktop applications. It consists of a set of classes that wrap around several types of HTML page components and CSS elements that can be composed and configured programmatically to generate whole pages. The classes render the page by generating HTML for each element and the contained elements. It provides classes for wrapping paragraphs, divisions (div), input fields, forms, tables, images, links, etc.