Frescobaldi is a LilyPond sheet music text editor. It aims to be powerful, yet lightweight and easy to use. Frescobaldi is Free Software, freely available under the General Public License.
Features:
Powerful text editor with syntax highlighting and automatic completion
Music view with advanced Point & Click
Midi player to proof-listen LilyPond-generated MIDI files
Midi capturing to enter music
Powerful Score Wizard to quickly setup a music score
Snippet Manager to store and apply text snippets, templates or scripts
Use multiple versions of LilyPond, automatically selects the correct version
Built-in LilyPond documentation browser and built-in User Guide
Smart layout-control functions like coloring specific objects in the PDF
MusicXML, Midi and ABC import
Modern user interface with configurable colors, fonts and keyboard shortcuts
Translated into the following languages: Dutch, English, French, German, Italian, Czech, Russian, Spanish, Galician, Turkish, Polish, Brazillian Portugese and Ukrainian.
Music functions:
Transpose music
Change music from relative to absolute and vice versa
Change the language used for note names
Change the rhythm (double, halve, add/remove dots, copy, paste) etc
Hyphenate lyrics using word-processor hyphenation dictionaries
Add spanners, dynamics, articulation easily using the Quick Insert panel
Update LilyPond syntax using convert-ly, with display of differences
Frescobaldi is designed to run on all major operating systems (Linux, Mac OS X and MS Windows). It is named after Girolamo Frescobaldi (1583-1643), an Italian composer of keyboard music in the late Renaissance and early Baroque period.