Bilal Prayer Site
Salat, prayer times, and Holy Quran search, Qibleh, Qibla, sohor, imsak, athan
http://www.bilal-prayer.com

Supplications
A collection of supplication to Allah.
http://supplication.8m.com

Hadith on Prayer
A collection of Hadith on Prayers.
http://www.geocities.com/minutesage1/salaah.html

Muttaqi - The reverent
Inspirational articles based on prayers and supplications from the Qur'an.
http://www.muttaqi.org

Concept of Dua (Supplication)
Contains a PDF file (900kb) to download; explains the concept of supplication of Allah.
http://www.geocities.com/ahabidi/

Namaaz Notification Service
Sends notifications to any email accepting devices including MS Outlook, cell phones and pagers. Service covers parts of Canada and US.
http://www.call4prayer.net/

Islamic Watch
Online calculator for prayer times for many cities world-wide; also converts dates from Gregorian calendar to Hijri.
http://www.islamic-watch.com/

Fortification of the Muslim
On-line rendition of the "little du'a book" by Hisnul Muslim.
http://www.makedua.com/

Prayer Minder
Offers online calculation of prayer times worldwide, and software downloads for various platforms. Includes an FAQ.
http://www.prayerminder.com/

The Basics of Muslim Prayer
Teaching Muslim prayer with text and illustrations.
http://www.sunna.info/prayer/TheBasicsoftheMuslimsPrayer.php

Salaat Time
A multi-function application that calculates daily prayer times and Qiblah direction for anywhere in the world.
http://www.salaattime.com/

Salah or Prayer according to Islam
Explains prayer according to Islam and its benefits, and compares it to the prayer in the bible.
http://www.islamawareness.net/Salah/

Accurate Times
Downloadable prayer and direction calculator, provided by the Jordan Astonomical Society.
http://www.icoproject.org/accut.html