Here's a bunch of templates, all courtesy of LucasFan. Note that a few are in german...
King's Quest 5 - Absence Makes the Heart Go Yonder
The Secret of Monkey Island
LeChuck's Revenge - Monkey Island 2 (Proskrito has made himself a MI2 template, too. Check it out!)
The Curse of Monkey Island - Monkey Island 3 (If this template is too specific for you, you can also download Lucasfan's "Verb Coin" template)
Space Quest III - The Pirates of Pestulon (Or, if you don't want to make another Space Quest, scroll down to Magintz's "Text Parser" template, or my own "Space Quest 2" template)
Space Quest IV - Roger Wilco and the Time Rippers
Space Quest 6 - The Spinal Frontier
Simon the Sorcerer 2 - The Lion, the Wizard and the Wardrobe
Verb Coin
Elliott Hird chose to have an English Space Quest 6 template, however - and really, who could blame him. So he translated LucasFan's template. But be warned, he never played SQ6, and he took the liberty of making changes... so I'll call this one...
Pseudo Space Quest 6 Template
Spyros made a Loom template, and here it is -
Loom
Proskrito has been making extremely good SCUMM reproductions - here they are, for reproducing MI2, DOTT and FOA (!!).
LeChuck's Revenge - Monkey Island 2 v2.0c (LucasFan has made himself a version of this one, too. Check it out!)
Indiana Jones and the Fate of Atlantis v2.0c
Day of the Tentacle
Mind you, Lazarus has been kind enough to convert the MI2 template into the newer 2.7 code. Wouldn't you rather have that one instead?
Or, if you'd like something less specific - just an average LEC Gui - try THIS one out, many thanks to Zor!
Standard Scumm GUI v1.5
Want to make a RON game? No problem! Here's the RON template, courtesy of NetMonkey. And remember, there's a game pack waiting for you, too!
Reality-on-the-Norm
PS - If you don't know what RON is, click here!
On a related note, Candle has combined the RON template with the Creditz plugin. Well, it'll certainly save you the time from downloading two different utilities at once!
RON Template + Creditz Plugin
Say, wouldn't you like to make a game like Broken Sword? I know you would. Sadly, I can't help you. Nor could RatRacer, BUT he's given you a headstart - a Broken Sword Interface. A.k.a. Uncertainty Machine interface.
Broken Sword - The Shadow of the Templars / The Uncertainty Machine
But of course, before Broken Sword there was Beneath A Steel Sky. BuRRe thought that was a major overlook, so he took justice in his own hands and heroically created a template for that classic!
Beneath a Steel Sky v1.1
Oh, wait, I know - you like the classics, but can't stand the parser, is that it? Well, never fear! Have JuncModule's AGI Template, based on Proskrito's SCUMM!
AGI Template
But then again, maybe you LIKE the parser, and think it's the perfect way to allow limitless interaction. Well, fear not, Magintz has answered your prayers!
Text Parser v2.0 (and remember that LucasFan has made a Space Quest 3 template, which also uses a parser system!)
Or... <evil grin> you could try my template instead. Which is very specific to SQ2, of course, but I had to have a model, heh? And I'm proud to say I've truly emulated the AGI engine (with even basic joystick support! Read the readme for this)! Coupled with the AGI plugin, well, the sky's your limit!
And I might as well give you the OTHER templates I made, as well. They are also sierra - the same interface I used for Larry 2 Point and Cick (i.e., it LOOKS like an SCI game but it's point and click), now with a BETTER inventory system, and Larry 7. RickJ has been kind enough to go over it to make it more readable, but it's still complicated because I didn't use many of the features (such as GUI x/y coordinate or length/height) which only became available later. Ah well. It should still work well, if it doesn't let me know.
These three templates have been coded with 2.7! Now ain't that good news!
Space Quest 2 - Vohaul's Revenge
SCI Point and Click
Leisure Suit Larry 7 - Love for Sail
Well, parser or no parser, you've GOT to try this! Dorcan's Gabriel Knight-style dialogue interface! What about that!
Gabriel Knight - Sins of the Fathers dialog interface
Wait, wait, wait - I know, I know, the dialog interface... just.. ISN'T ENOUGH! Right? Never fear! Dragonrose had created a template for the actual game! AND - it INCLUDES Dorcan's dialogue interface! The only thing still left out is the tape recorder interface - but hey, one step at a time, right?
Gabriel Knight - Sins of the Fathers
And now, here's a very interesting proposition from Stryker. How would you like a Discworld-like interface?
Discworld 1.2
Bah! Discworld with NO graphics as dialog options? You MUST be joking!
Yeah, I know how you feel. How about THIS, then? Scavenger's Icon Based Interactive Dialog System - or SIBIDS, for short. Originally a GUI and some nightmarish code, I took the liberty of templating it. It IS a great code... but word of warning, you'd better be comfortable with scripting! And - it's now v2.7 friendly! Who's your pal?
SIBIDIS
Oh, my GOD, all that CODING, it's so COMPLICATED, I just wanted the MOUSE code...
Did you? Now you'll have it! Specifically made for people who just care about the whole Right-click-to-look-and-left-click-to-interact routine, here's ALARCOST (AGS Left and Right Click Open Source Template), a little gift to all you non-complicating people by releasethefrogs. Give that guy a cigar.
ALARCOST (AGS Left and Right Click Open Source Template)
Now here's for our arcade-loving friends! Ahmet's Fight Game engine! Thanks, Lonely Star!
Ahmet's Fight Game
More arcade? Why not?! Geof has taken into himself to make a platform engine. It's said to be better than the original Platformerius engine, so I'm hosting it instead. For completeness sake I might add Platformerius. Just ask me.
Geof's Platform Engine
Phew! I went browsing through my hard drive, armed only with a digger's helmet with poor batteries and a wimpy-looking pickaxe (plus some garlic because of the vampire bats, as well as some catnip - don't ask), and I found really old stuff! I wonder if anyone's still interested?
First off, we have the original LucasArts GUI that used to come bundled with AGS before all those magnificent templates. I don't even know if it includes scripting! Kinda useless now, but still a blast from the past.
Original LucasArts GUI
Next, we have something called Okii Cartoon GUI. Now, I don't even remember what it IS, let alone who made it. But let's see... aha. It's a importable GUI. Fun, I guess. Try it out!
Okii Cartoon GUI
...wow, THIS one was real hot way back when! But, it might be quite out of date. Nevertheless, should be very helpful. It's also a sort of tutorial, you know? And it's called Blue Gui. It's really worth checking out!
RickJ's Blue GUI