Af-Arch is an N-tier development framework to quickly build high-quality distributed applications. It currently supports C and C# programming languages, which enables you to write client applications using them. It currently runs on GNU/Linux and Microsoft Windows, and is being used in production environments.
OpenHacha is an implementation of the proprietary, Windows-only program Hacha. It is based on the libhacha2 library, a C# implementation of the Hacha program feature set developed by the Dalle project. It aims to provide a graphical frontend and a text console client to manage and create Hacha files. It is developed under the MONO:: platform.
SMC takes a state machine stored in an .sm file and generates the state pattern classes in fourteen programming languages. Its features include default transitions, transition arguments, transition guards, push/pop transitions, and Entry/Exit actions. It requires Java SE 1.6 or better.
Lasso (Liberty Alliance Single Sign On) is an implementation of the Liberty Alliance specifications. These specifications define protocols for federated identities, single sign-on, etc. Lasso supports ID-FF 1.2, SAML 2.0, and parts of ID-WSF. It provides both a C library and bindings for several languages (Python, Java, Perl, PHP 4, and PHP 5).
Gentle.NET is a CLS-compliant, database independent object persistence framework. It has an extensive feature set, excellent performance, and reasonably complete docs. It features automatic SQL generation, object construction/caching/uniquing, validation, bindable list support, relation management, transactions, and much more. Oracle, PostgreSQL, MySQL, Firebird/InterBase, MS SQL Server (incl. CE), MS Access, SQLite, Sybase, and Sybase ASA are supported. It includes a NAnt build file as well as VS.NET project files for building under Windows. Mono 1.1.4 and higher is fully supported.