The Week in Mac Apps: House of glass

This week’s Mac app roundup brings you software that can take you from device to device without batting an eye, a product that can save you money on your music, and another one that will play just about music you can buy.

Betaunltd LLC’s $2 Calculator• ( Mac App Store Link) allows you to perform simple calculations right from the menu bar.

The app offers a streamlined interface, copy-and-paste support, and can even be invoked with a global shortcut.

Citrix’s Crystal Palace ( Mac App Store Link) links all your devices together and allows them to share content and apps.

Available free of charge, the app allows you to transfer your pasteboard from your Mac to your iPad or iPhone, and even move an active app between two devices.

DevHD’s Feedly ( Mac App Store Link) brings the popular RSS reading service to the Mac.

The free app supports all the features of its Web-based counterpart, and includes a few OS X-only touches, like an icon badge that shows the number of unread articles.

Meldora’s $5 Melobase ( Mac App Store Link) is a client-server database that can store and play back your compositions using a simple but intuitive sequencer.

The app can handle up to 128 MIDI intruments—plus a drum set—and supports both manual input and recording directly from a MIDI-enabled keyboard.

CashBanka’s Music Deals for iTunes keeps track of all the discounted music available on iTunes for you.

The app features hundreds of deals daily and offers the ability to filter by category or price.

Circus Ponies’s $60 NoteBook 4 ( Mac App Store Link) is a veritable note-taking powerhouse that helps you keep track of all the important bits and pieces you collect throughout your daily life.

The app supports rich text, media storage, flowcharts, tables, and the ability to perform spreadsheet-like calculations.

Lucky Marmot’s $20 Paw HTTP Client ( Mac App Store Link) is a handy utility for those developers who work with Web-based systems.

The app allows you to create a series of requests that use the Web’s HTTP protocol, fine-tuning everything from payload contents to headers, and saving the most useful request for later use.

Aeolian Apps’s $1 Tunelet ( Mac App Store Link) lets you control iTunes playback directly from the menu bar.

The app works independently of iTunes itself, and offers a minimalistic interface that provides all the controls you need to find, play, and rate your music.

Developer Giuseppe Cigala’s $1 Card4Call ( Mac App Store Link) is the quickest way to design and print your business cards, with simple options and an easy-to-use interface.

Cateater’s $4 EasyCam ( Mac App Store Link) is a jack-of-all-trades app for using a webcam for surveillance purposes. It supports a wide range of devices (including iPhones and iPads), and is even compatible with motorized cameras that can be panned and rotated with a joystick-like interface.