If you'd rather record your own music than listen to someone else's, try Audacity. In addition to recording tracks, it converts older formats to digital files and offers some basic audio editing capabilities. Operating System: Windows, Linux, OS X.
If you've devoted your summer to learning to play your favorite song on the guitar, BestPractice might be able to help. It slows down the speed of the music without lowering the pitch, and that makes it easier to for people who play by ear to learn a new piece. Operating System: Windows.
A blazing fast audio player for Windows, CoolPlayer boasts a simple interface and an 8-band equalizer. It's available with a variety of "skins" to suit your preferences. Operating System: Windows.
With this app, you can turn your Windows-based PC into a drum machine. Drag and drop snippets of drum sounds to create your own drum track. Operating System: Windows
This music workstation includes a sequencer, midi support, soft synthesizers, audio recorder, piano roll/tracker/notation editing and more. Most importantly, it lets you create your own music without the need for actual instruments or other hardware. Operating System: OS Independent.
59. GNU Solfege
Want to improve your ear for music? GNU Solfege helps you learn to identify and sing intervals, sing chords, remember rhythmic patterns, and more. Operating System: Windows, Linux, OS X.
If you're learning to play an instrument or writing your own compositions, you may want to check out this app. It offers a number of different exercises to improve your music theory knowledge, as well as a score editor. Operating System: Windows, Linux, OS X.
For live performances, Mixere lets DJs access an unlimited number of audio tracks. The interface is basic, but easy to use. Operating System: Windows.
Another app for DJs, Mixxx can work with or without an external turntable. And the dynamic interface is decidedly cooler than Mixere's. Operating System: Windows, Linux, OS X.
This Web-based photo album organizer makes it easy to organize and share your digital photos. To use it, you'll need your own Web server, or the site recommends a number of hosts that are confirmed to be compatible with Gallery. Operating System: Windows, Linux.
Sometimes called the open-source Photoshop, Gimp lets you edit photographs and other images just like the pros. For the Windows version, see Gimp-win. Operating System: Windows, Linux.
This app for Matrix fans creates images of characters from the movies using those weird green characters. It supports multiple screen sizes and OSes. Operating System: Windows, Linux, OS X.
68. Pixel City
This screensaver flies you through a dynamically generated city at night. The video on the home page shows you how it works. Operating System: Windows
With this app, you get 12 different screensavers in a variety of graphic styles. The newest is Microcosm, a "phantasmagoria of gooey geometric shapes" that "will give you a splattering, writhing spectacle of 3D patterns and vibrant colors on your computer screen." Operating System: Windows.
If you can't spend your time building with Legos, you can at least watch a computer simulation. Note that the link above is for the Linux version; you can find the Windows port here. Operating System: Windows, Linux.
Does creating your own 3D animated video sound like fun? This professional-quality tool makes it easy to get started, and the Web site offers a lot of educational materials to help you perfect your skills. Operating System: Windows, Linux, OS X.
This free HD player boasts a library of 6,000 free TV shows and video podcasts. It makes it easy to connect to BitTorrent and to save YouTube videos. Operating System: Windows, Linux, OS X.
73. OpenShot Want to make a movie? This Linux-only video editor offers features like video transitions with real-time previews, compositing, image overlays, watermarks, title creation, rolling credits, and a number of digital effects. Operating System: Linux.
This app will switch out your wallpaper with random images from Google based on the keywords you select. You choose how often it refreshes and whether or not to use safe search. Operating System: Windows.
No window in your cubicle? No worries. Izulu updates your desktop to match the current time and weather conditions based on data pulled off the Internet. Operating System: Linux.