this is an awesome topic!
i personally use an older version of shredder for analysis, but i'll be picking up rybka here soon :)
as for games analysis, i'm just going to wait for chess.com to finish the games explorer and games management tool ;)
but i'm still looking for decent chess software for the blackberry!!
I'm putting together a set of chess software for my own use/study. Here are my opinions, though some things I haven't settled on yet. I'd love to get some opinions from others. In my mind, there are a few categories of software the well-equipped player needs.
Chess Playing Software
I have Fritz 7. I think the interface is horrible. As one review put it, "it looks like German shareware from the 1980s". Still, it's a great engine. I haven't seen anything in Fritz 10 or Fritz 11 that makes me feel I need to upgrade. However, I also have Chessmaster XI (GM Ed) and much prefer it. The interface is vastly better, the annotation is more understandable, and the learning tools are great. In my experience CM also "steps down" better than Fritz - I can set CM to play at a lower level and it doesn't do stupid things, while Fritz seems to either be very strong or doing dumb things like leaving pieces hanging, making ridiculous sacrifices, etc. I like CM's auto-annotate feature better, and it has some really good training tools. Either Fritz or CM is 1200+ points above my level, so game strength isn't really that important to me.
I also use the Crafty, Fruit, and Fritz 5.32 engines (see below). I would think one of these engines + Arena Chess would be a good alternative for those looking for a free option.
Opening Study
I use Chess Position Trainer, which is free and very good. Refreshingly for a free product, it has a nice .PDF manual, too. You can plug Craft, Fruit, Fritz 5.32, etc. into it. I haven't found a reason to look at Bookup (or "Chess Opening Wizard" as I think it's renamed now)...CPT is just so good I don't see the need.
Chess Database Software
I've just started playing with this. The contenders are:
ChessBase offers "ChessBase Light" which is cheaper, but it is limited to 32,000 games. Initially, I just want to store my own games and analyze them, but of course the ultimate use for a database is to have millions of games for comparison...I don't know what to do in this category. Does anyone with more ChessBase, Chess Assistant, and/or SCID experience want to comment?
Chess Games Collections
Obviously, ChessBase publishes scads of this stuff. I was going to look at the DB that comes with Jose. Are there other free PGN collections out there? ChessMaster comes with 800,000 and Fritz came with 1,000,000, but of course I want to get them into whatever database program I ultimately use.
Portable Chess Playing
Per another thread, I've ordered a Palm Z22 and will give that a spin with Pocket Hiarcs or one of the other products. PocketPC users have the option of Chessmaster or PocketFritz. There are also PSP and DS offerings, plus dedicated pocket computers...but I wanted to be able to ship PGNs back and forth, so it was either a Palm or PocketPC for me, and the Palm was a cheaper choice overall. Of course, if you have a SmartPhone, you might already have a platform.
Chess Diagram Software
This is for making chess diagrams you can then export as bitmaps, PNGs, etc. for use in publishing or web pages. In my case, I'd like to setup a blog. I found a freeware program called ChessDiagrams that isn't bad, but would like to look at more tools. I'm sure there's some standard everyone uses, but I haven't found it yet...or perhaps one of the better database programs can do an export. There's always screen captures, too, I suppose.
Studying Software
Too many choices and it depends on what you want. I'm using some of Convekta's tactics stuff at the moment.
If I ran tournaments, I'd have a category for that, too, but I don't ;-)
I eagerly await comments...