XCA is an interface for managing RSA and DSA keys, certificates, certificate signing requests, revocation lists and templates. It uses the OpenSSL and Qt4 libraries. Certificates and requests can be created and signed and many x509v3 extensions can be added. XCA supports multiple root and intermediate Certificate authorities. The CAs can be used to create CRLs and extend certificates. The following file-formats are supported: PEM, DER, PKCS#7, PKCS#8, PKCS#10, PKCS#12, and SPKAC.
Kalpa.Cloud is a toolkit for developing SaaS applications. It consists of a Universal Cross-platform Client and a Qt-based library. It allows the developer to develop Rich Internet Applications with GUI using the Qt programming style for the server and to implement it as easily as possible.
libNUI is a hardware accelerated GUI framework that makes it possible to build rich multi-platform applications based on 3D rendered dynamic layouts. Interfaces are built as a composition of widgets and behaviors, and the framework handles positioning, resizing, anchoring, and texture stretching. Objects are connected with synchronous events and delegates for mono-threaded communication, or asynchronous notifications and message queues are used for multi-threaded applications. It also supports strings (including Unicode), paths, files, data streams, fonts, threads, critical sections, audio buffer rendering, and more.
Qore Qt4 module allows GUIs to be implemented in the Qore programming language. This module is based on libsmoke and provides access to the entire Qt4 API exported by libsmoke. The module supports hard typing, function and method overloading, and all Qt4 enums and constants to provide relatively direct access to the native Qt4 API in the Qore language. A uic-qore program is included so that Qt4 designer is usable for making GUI prototypes as well.
Rapicorn is an experimental UI toolkit. It strives to apply modern technologies properly to all aspects of the toolkit implementation. Such technologies include pthreads, XCB, Cairo, compositing, IDL, XML notation, path evaluation, DSLs, unit tests, and SVG. Rapicorn is developed on this base with the aim to significantly improve developer efficiency and user experience.