Games

Full games

• Zork 1
• Zork 2: The Wizard of Frobozz
• Intellivision collection 1 and 2
• Clickomania
• America's Army first person squad game from the US Army.
• Rockstar Games - giving away Grand Theft Auto.
• The Marathon series - Mac only, right now. (You can use the files with Aleph One, though.)
  
• MechCommander Gold/MechCommander 2 - Pretty good strategy game (great fun) in the Battletech universe. Yes, formerly sold by FASA/MS.
• Mechwarrior 4: Mercenaries - for more Battletech fun, drive a mech around and crush (and shoot) your enemies!
• Star Control II - the Ur-Quan Masters - classic game, multiple platforms.
• Planet M.U.L.E.
• Quake III: Arena

Demos worth looking at

• Tux Racer Open source game. If this can be done with open source, I have great hopes...
• Viable Software Home of Empire Deluxe, a very good shareware game, quite playable.

Cheap/Free Game Sites

• Good Old Games - also known as GOG.com. Classic games at great prices. Legit downloads with manual and often other goodies. Want Fallout, Syberia, Sacrifice, Giants and more? Look here.
• Tom's Hardware - 20 free retro games - Nice collection of small, free, and fun games of all sorts.
• Steam - Yes, you'll get new games at (often) full price, unless they have a sale (which isn't exactly a rare event,) but they also have a good selection of indie games, older games, demos and even some surprising freebies (like Alien Swarm.) Good for PC and Mac.

MMOs

• City of Heroes - Monthly fee and initial cost, though the initial cost is pretty low (most versions are $20 and provide a free month of game time, plus other goodies. (After July 2010, click here to get the City of Heroes Going Rogue Complete Collection which will give all areas with the newest expansion.
• Warhammer Online - the "Eternal Demo." Free to download and play, but limited for max level unless you pay.
• Anarchy Online - A rarity. Sci-fi based (of which there are very, very few) and free to play (unless you want expansions.)
• Lord of the Rings Online - Where else do elves, orcs and the like fit? Tolkein's legendary world, of course! One of the lower monthly fee MMOs.
• Dungeons and Dragons Online - You think tabletop RPG, you probably think of D&D. Well, here it is - and free to play.

Non-games

Various and sundry apps

• Ubuntu - Hey, we're talking free, why not start with a free OS? I used to say "I wouldn't list Linux since there are so many," and there are, but this has evolved to be an easy to install, easy to use OS (and with WINE, also a free download, it can run several Windows programs too, if it doesn't have a Linux version.) It can be tricky to troubleshoot, and support is only found online from other users, but it can be rewarding.
• Apple's older software archive including versions of System 6, 7, and 7.5 for the older Mac or Powermac, and associated files and drivers.
• WordPerfect 3.5e for Macintosh - Last Mac version (so far) of this word processor. Released to the public. (Link removed, seems broken and requires Classic mode, unavailable on Intel macs.)
• Mozilla - I love this browser. Very polished.
• Thunderbird - from the same group that brought you Mozilla, a free, powerful and cross-platform email client. Tis what I use.
• OpenOffice - Opensource alternative attempt at an MS Office compatible, free office suite.
• Macrium Reflect Free - Windows 7 and Windows Vista come with a backup program. (The one in Win7 isn't bad at all.) Still, back up your data! If you don't have something to do it with, give this program a try.
• Sun - not only do they have StarOffice, but Solaris if you want another alternative OS.
• Qualcomm - My former favourite email program, Eudora, is from these guys. You can chose to pay, see (very unobtrusive) ads and get it free, or use a stripped down, ad-free, free version. All in one download.
• Opera - Adware or purchased browser. Not too big on this one these days, but it's here.
• Ambrosia Studios - Not forgetting our Mac friends, this studio has games for older and newer Macs, often at low cost, as well as some Windows programs. Fun, generally lightweight games that have sucked down hours of my time in the past.

Sites with free, legit downloads

• PCPlus - UK based magazine that offers downloads from its site, and many more (like compilers, office suites, graphics programs and the like) from its magazine.
• Tucows for PC or Macintosh - games, utilities, demos or full versions.
• Game Archives - combination of free, demo, and shareware games for multiple platforms.
• MacOS Archives - Mac version of the above, with more than just games.
• BeOS Archives. Listing because you can download BeOS free, legitimately, here, and - well, I like Be.

Other sites

These are sites that either I maintain, frequent, or am otherwise involved with, or just plain like.

• The Modeler's Home - My site for another hobby of mine, modeling.
• Pthppt.com - friend's site, on various topics.
• Frayedwire's home page - Link removed. I haven't talked to my ex wife, she didn't give a rip about keeping the page up even when we were together, among other things, and I'm not subjecting you to her paranoid, disjointed ramblings.
• Apple Computer. Yes, I like Macs. I used to use one, as well as a PC. And they show what can be done with free (included) software with their iApps, as well as possibilities that start from free, open source software (OS X.) (Wonder if they'll give me a MacBook for this link...)