Free Bible Software.
e-sword - Excellent Bible software, great functionality with loads of features, great add-ons to download.
Bible Explorer - Tons of free books to download, Bible reading planner is very good and so is the interface.
Online Bible - A golden oldie, still very good simple format and a wealth of user add-ons.
Great Preaching.
Preach The Word - What a wealth of audio sermons on here, all from the dulcite tones of Pastor Legg of the Iron Hall Belfast, I cannot recommend this enough.
Sermon Index - Ever wanted to hear some of the world greatest preachers but suddenly realized most of them have gone to the Lord, well here most of them have been immortalised here on earth for your listening pleasure.
Study Helps.
Bible.org - Lots of study helps here, articles, series, audios the lot!
Help with Bible Study - Simple looking site, very good articles in a well laid out plan of study, well worth a look.
1-yr Bible Reading Plan - I would recommend this one for new Christians and old alike, it varies the types of books every day of the week.
Walk Thru The Bible - This is a good study for kids and teens, if you get embarrassed about standing up in church and waving your arms around, don't go here!
Learn the Bible - Helps you to do exactly what it says.
Wholesome Words - There is a ton of stuff here, very good collection.
Christian Works.
The Spurgeon Archive - A whole mass of Spurgeons writings and sermons, it'll take you a ife time to read them all.
Ethereal Library - There are a lot of ebooks and writings here from many authors and sources.
John Wesley - The sermons of one of England's greatest preachers.
J.C.Ryle - The works of a great theologian.
Evangelism Resources.
Way of the Master - This is the now infamous site of Ray Comfort, rejected by many as too harsh or as a legalist, I believe he is necessarily the first but most definitely not the second, follow his ideal and use his stuff, your church will be very blessed.
Read This Before You Die - Great witness tool to all those kids who think the Bible is old and boring.
Christian Book Stores.
International Christian Mission - This is a no fuss book store, it has always got the books in stock because they don't advertise them if they ain't, and delivery time in the UK is like TOMORROW!