Sibelius

Step-time and real-time MIDI input, and a built-in virtual piano keyboard. Or type the notes in, or click with the mouse. Transpose a selected passage to any key, or by any interval—or even transpose diatonically within the same key. Multiple tab styles available—from note symbols outside the staff to upside-down strings—and linked standard/tab staff pairs. MuseScore can now open files from Guitar Pro, so you can easily migrate over. Import filters are improving with every release. Any change you make to the content of any part is immediately reflected in the full score—and vice versa. Instantly switch between transposed and concert pitch. Sounding pitches stay the same while the written notes change. Focus on the content, undistracted by line breaks or page breaks. Switch to Page View to polish up for printing.

StaffPad is an award-winning music notation app, designed for pen and touch, and built for composers. StaffPad lets you effortlessly write music in your own handwriting, edit with the convenience of touch, and hear your score played back with breathtakingly realistic sounds. StaffPad Reader is made for musicians. It's a free app that connects to StaffPad, and displays the individual parts of a StaffPad Score, in real time, across multiple devices. Any changes made to the score in StaffPad update instantly on every connected Reader. Annotations and playback work in perfect sync, all you need is a simple Wi-Fi connection. Together, they form an extremely elegant, intuitive and powerful platform for composition and live performance. StaffPad's unique algorithms convert your handwritten notation into a beautifully typeset score. It'll even help you by automatically correcting your stem directions, adding courtesy accidentals and highlighting when there's too many, or too few, beats.