Various Chaplets - Description of various chaplets other than the rosary: what they look like, what prayers are said, historical background if known to the author. As this article says, some are of dubious value. - http://campus.udayton.edu/mary//resources/chaplet.html
Blessed Sacrament Chaplet - A chaplet that honors the Lord's True Presence in the Blessed Sacrament. - http://www.premier.net/~avemarie/Chaplet_Most_Blessed_Sacrament.htm
Catholic Prayer Library - Rosaries and Chaplets - A library of prayers to be said on Catholic prayer beads, including several rosaries (Dominican, Franciscan, Servite) and a variety of devotional chaplets (to Our Lady, Our Lord, Saints and Angels). Each is provided in printable format. - http://prayers.viarosa.com
Prayerbook: Chaplets - A collection of chaplets in honor of our Lord, our Lady, and the saints. - http://www.prayerbook.com/Chaplets/chaplets.htm
The Angelic Trisagion - Three sets of nine beads each. Joining the angels' praise of the Trinity. - http://www.catholic-forum.com/saints/pray0201.htm
Catholic Encyclopedia: The Franciscan Crown - Article about the Franciscan Crown, also known as the Seraphic Rosary. Brief history, general description of how one prays this chaplet. - http://www.newadvent.org/cathen/04540a.htm
Catholic Encyclopedia: Use of Beads at Prayers - Essay on chaplets, rosaries, prayer ropes, prayer cords. Brief treatment of the use of beads in prayer by non-Christians. - http://www.newadvent.org/cathen/02361c.htm
Chaplet of St. Joseph - For those devoted to the Holy Family. Asks the protection and intercession of St. Joseph. Will take just over a minute to load on a 14.4 modem. - http://www.premier.net/~avemarie/Chaplet_of_St_Joseph.htm