Smuxi is an irssi-inspired, flexible, user-friendly, and cross-platform IRC client for sophisticated users. Smuxi is based on the client-server model: The core application (engine) can be placed onto a server which is connected to the Internet around-the-clock; one or more frontends then connect to the core. This allows the connection to IRC to be kept up even when all frontends have been closed. The combination of screen and irssi served as the example for this architecture. Smuxi also supports the regular single application mode. This behaves like a typical IRC client; it doesn't need separate core management and utilizes a local engine that is used by the local frontend client.
GoodSync for Mac is an easy and reliable file backup and file synchronization application. It automatically analyzes, synchronizes, and backs up your email messages, photos, contacts, MP3s, financial documents, iTunes, and other files locally between desktops, laptops, servers, external drives, and mobile devices, as well as remotely with FTP, SFTP, WebDAV (including MobileMe), and Amazon S3 cloud storage.