Resources that we use
 Begun in December 1998, CPDL is one of the world's largest free sheet music sites. One can use CPDL to find scores, texts, translations, and information about composers.
Cipoo.net provides more than 1000 sheet and choir music files in pdf, midi and Noteworthy Composer (nwc) format.
Marco Voli's web site, containing a large collection of choir scores in pdf, midi and Noteworthy Composer (nwc) format.
The Classical Archives is the largest classical music site on the web: 
more than 35000 full length classical music files by some 2000 composers.
John's downloadable
Midi File
Choral Music site
 A large collection of MIDI files specifically created by John Hooper as training aids for choirs, with emphasised and unemphasised voices.
Downloadable music software for Windows and Mac OS. Program licenses are sold at a very low price, and they are lifetime. Some programs are even free of charge.
TiMidity / TiMidity++
 TiMidity++ is an open source MIDI to WAVE converter and player. It uses SoundFont Banks to generate digital audio data from general MIDI files. The audio data can be played through any sound device or stored on disk.
Thousands of high quality original compositions in midi and mp3 format to listen to, composed by the contest participants.
Freeware and shareware developers' tools and Delphi components written by Jordan Russell. 
Altervista.org is a large virtual community, aimed at providing free and comprehensive service to all those people who intend to publish their web site.
PHPJunkYard offers free PHP scripts for download, some PHP resources, a list of books about PHP and more.
SharpEye is a music scanning program. One can use SharpEye to convert printed sheet music into a MIDI file or music notation file which can then be imported into a MIDI sequencer or music notation program.
The Choralia web site is monitored by SiteUpTime (www.siteuptime.com). SiteUpTime is a website monitoring service that watches a website 24 hours per day, 7 days per week. By clicking on the SiteUpTime logo here, you can see the availability statistics of our web site. 
Robert Allgeyer is definitely a person having interests in many different fields. The synthesized voices used for the Virtual Singer technology are obtained, with very minor modifications, from those he developed.
Massimo Capozza invented the CMS technology to distribute choir training aids via internet. He produces the training aids available on Choralia, and he also manages this web site.

Other resources for choirs

 ChoralNet provides a central portal to online resources and communications for the global choral music community
Gerontius: choirs, concerts and choral music resources
British Choirs on the Net: the UK’s largest online choral listing resource

Choirs appreciating our effort

 The Melos Ensemble Musical Association was created in Rome in 2002. It consists of a mixed choir, originally formed in 1997, and a symphonic orchestra. Enter the reserved area
The Corale Quadriclavio is an amateur mixed choir founded in Bologna in 1995, specialised in classic sacred and baroque music, with orchestra accompaniment and "a cappella".
The "Coro Città di Milano" (Choir of the City of Milan), established in 1957 with the name “Coro Alpi”, took the current name in 1969. Its repertory alternates sacred and secular mixed voice music, and ranges from Renaissance to contemporary music. 
First Parish of Westwood, United Church, denominationally affiliated with the United Church of Christ (UCC) and the Unitarian Universalist Association  (UUA), is a vibrant, contributing and welcoming congregation located in Westwood, MA. First Parish has an active musical program with Senior Choir, Youth Choir and various musical events throughout the year.
The Choir "Fonte Meravigliosa", in Rome, was created in January 1996. The Choir, that includes about 35 non-professional elements, has a large repertoire ranging from sacred music music (Bach, Mozart, Haendel, Rota), to opera (Verdi, Rossini, Mascagni, Bellini), to works of contemporary composers such as Bernstein and Lloyd Webber.
The Wombourne and District Choral Society is a long-established choir of some 100+ singers, drawn from South Staffordshire, Shropshire and the West Midlands, UK.
Established in 1987, The Octavian Singers have gained a justified reputation for achieving high musical standards. The group performs a wide variety of music from Baroque to 21st Century, madrigals to major choral works. The Octavians are based in Woking, Surrey, UK.
The choir "Laeti Cantores" was established in Salerno (Italy) in 1990, with both sacred and secular repertoire. It achieved excellent results in national and international reviews and contests. It is proud of cultural exchanges and collaborations with choir groups and choir experts such as Pier Giorgio Righele, Steve Woodbury, Peter Neuman, Giorgio Mazzucato, R. Paul Crabb. Currently, the group is mostly devoted to the study of 1900 and contemporary music.
The "Mater Ecclesiae" Polyphonic Choir of Almese (Turin - Italy) was founded in 1979 as a development of the local Parish Church Choir. In many concerts performed in Italy and abroad the choir offered a repertoire that gradually focused on classical polyphony and music of the XVIII-XIX century.
"The Lutheran Chorale" of Milwaukee (U.S.A.), established in 1957.
The "Gruppo Polifonico Madrigalisti Senesi" from Siena (Italy) was established in 1950. The study of Renaissance polyphony, sacred and secular, is the speciality of this choir, that, however, is devoted to a varied repertoire, ranging from Gregorian chant to the laud, from ancient classical polyphony to the romantic, modern, and contemporary choralism. Exclusively made by amateurs, the choir carries out an intense educational and concert activity, both in Italy and abroad.
"The Leeds Metropolitan University Choir" (Leeds, UK).
The "Cordova High School Choirs" of Cordova, Tennessee, U.S.A, include 4 choirs open to students of different grade and experience levels.
The "Coro da Universidade Nova de Lisboa" (choir of the New University of Lisboa, Portugal), established in 1988, has wide repertoire ranging all periods and styles, and a staff of about 40 singers.
The "Schola Cantorum de la Cathédrale d’Evry", France, is a chamber choir with liturgical vocation. Established in 2006, the staff of the Schola Cantorum includes 16 singers.
The "Forest Grove High School Chorale" of Forest Grove, Oregon (U.S.A.).
The choir "Chœur Anne de Bretagne" was established in 1994, and, at that time, it was named "Les Chanteurs du Chœur Régional des Pays de la Loire". The current name was chosen in year 2000. The "Chœur Anne de Bretagne" is composed by about 50 singers. It organises multiple concerts per year, with sacred music repertoire, classical or baroque, often with professional soloists and orchestra.
"The Normandale Community College" of Bloomington, Minnesota (U.S.A).
The choir "Coro Casa della Carità" of Lugo di Romagna (Italy) has a staff of about 40 elements of all ages, divided into four sections, with the co-operation of soloists and other musicians.
"Cantabile - choeur symphonique neuchâtelois" is a mixed choir currently including about 150 singers coming from all the regions of the canton of Neuchâtel, Switzerland.
The "Edmonds Woodway High School Music" of Edmonds, Washington (U.S.A.) has two choirs: the "Bel-Canto Choir", open to all students interested in vocal music; and the "Mello-Aires", a small ensemble of 16-20 students selected by audition.
"The Leeds Methodist Choir" (Leeds, UK) began its life in 1964. The choir consists mainly of Methodists from churches in the Leeds District, but membership is open to anyone who wishes to join. It's a summer-only choir, meeting between June and September.
The choir "Coro Symphonia" is composed by a dozen members. It is very active and boasts numerous concerts especially in Casentino and Arezzo surroundings. Since the first concert in 2004, many performances have been made: in churches, castles, or outdoors. Among them, it is worth to remark the participation to different events such as the "International musical weeks" sponsored by the Pratovecchio town council, the Christmas concerts, the national review in Arquata Scrivia (AL). The most significant experiences are those abroad: in Uffenheim (Germany) in 2004 and 2006, and in Egletons (France) in 2007.