First of all, as a newbie to this site, can I just say a big "well done" to all involved - very impressive and helpful. Wish I'd found you before!
Looking at the poll results, I see others - like me - prefer to use free services (yes, I know, I'm just a cheapskate - but, hey - this is how I make my living, so if it's free, then count me in!), ie Quote.com. This Lycos facility is pretty good, although unreliable at times.
I was given the following link by a friend and have been using this in tandem:
Free to download and easy to use, it allows trendline projections, different timings, a choice of indicators (from a fairly decent range) - the usual bits and bobs, really - and if you want to go a step further, then subscriptions are also available.