Notation Machine - www.notationmachine.com
Convert midi files to sheet music automatically. Windows software. With free sheet music being so hard to find, and midi files being so easy to find, this becomes a match made in heaven! Free download limited version. Unlimited version only $39.95!

The Band Leader - www.thebandleadersoftware.com
The Band Leader is powerful income, expense, and gig tracking software for musicians. Easy to use and customizable.

Adobe Audition (formerly Cool Edit Pro by Syntrillium)
Adobe Audition is the same great Cool Edit Pro that you know and love along with the addition of enhanced integration with Adobe Premiere^® Pro® and Adobe After Effects® 6.0 software. Also includes 4,500 high-quality royalty-free loops so you can make your own music quickly and easily.

Cakewalk - www.cakewalk.com
Cakewalk develops and markets the world's leading music and sound software for Windows. Over 1,000,000 people worldwide use Cakewalk products daily to produce audio for CDs, film, TV, video games, live stage sound, the Internet, and personal enjoyment.

Band In A Box - www.pgmusic.com
The award-winning Band-in-a-Box is so easy to use! Just type in the chords for any song using standard chord symbols (like C, Fm7 or C13b9), choose the style you'd like, and Band-in-a-Box does the rest. Band-in-a-Box automatically generates a complete professional quality arrangement of piano, bass, drums, guitar and strings in a wide variety of popular styles. (Jazz, Pop, Country, Classical and more.)