Are you sure what they're doing is legal? They go beyond lack of attribution, and actually claim the programs are their own:

Make math and science easier (and more fun) with free graphing calculator programs and games from calculatorti.com. You can make the process of transfering the application to your calculator sweet and simple with Texas Instrument's handy TI connect software. Install it on your computer and grab your GraphLink Connection cable (USB cable) to plug in your calculator. Then you can start downloading any of our programs and games (Wow! There's a lot!) from our libraries to transfer and install them to your calculator. Have fun!

Hey guys: I did a WhoIs look up and they are hosted by GoDaddy, here is a copy of their Legal Agreement. Under Section B for Copyright Claims you can e-mail them about any relevant information. I would only do this if you find your work on CalculatorTI and if they do not act on your request to remove or credit you for your work.

According to the GoDaddy Legalese, this following information must be included:

• An electronic signature of the copyright owner, or a person authorized to act on behalf of the owner, of an exclusive copyright that has allegedly been infringed.
• Identification of the copyrighted work claimed to have been infringed, or, if multiple copyrighted works at a single online site are covered by a single notification, a representative list of such works on that site.
• Identification of the material that is claimed to be infringing or to be the subject of infringing activity and that is to be removed or access to which is to be disabled, and information reasonably sufficient to permit GoDaddy to locate the material.
• Information reasonably sufficient to permit GoDaddy to contact the Complaining Party, such as an address, telephone number, and, if available, an electronic mail address at which the Complaining Party may be contacted.
• A statement that the Complaining Party has a good faith belief that use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.
• A statement that the information in the notification is accurate, and under penalty of perjury, that the Complaining Party is the owner, or is authorized to act on behalf of the owner, of an exclusive right that is allegedly infringed.

What does this all mean? I'm no lawyer and I'm interpreting this as best as I am able and may not be 100% correct:

• Basically saying that you need to include the proof of copyright. This will vary depending on your country of origin (or where the program was made). It is my understanding that the USA has a law the automatically provides copyright protection to the author of the work. I take a photo, that photo is copyrighted to me. Some countries may require the author to apply for a copyright on the work. I take a photo, that photo is not copyrighted until I apply for a copyright on that photo (and subsequently approved). I'll leave this step up to you guys.
• Perhaps a link to your work hosted somewhere with your permission. Repeat for any and all of your infringed programs.
• Links to your programs hosted without permission on CalculatorTI.
• No contact info is given but you can probably send this link: http://www.calculatorti.com/contact/
• Telling GoDaddy that your work is not attributed to you, hosted without permission and that CalculatorTI claims ownership. Which kind of seems implied: "Then you can start downloading any of our programs and games."
• Basically, confirming your identity to GoDaddy and that all information provided is accurate and true.

Ideally, your first course of action should be Contacting CalculatorTI directly and asking them to remove your programs - with links. If they do not move forward with your request escalate the issue to GoDaddy.

You cannot ask for someone else's program to be taken down unless, you have written permission (Point 1 of the first list) from that author and share proof of that permission. Now, if you guys want to create a table that lists the programs on CalculatorTI with the properly attributed programs that were hosted with permission that'd be great! It'd allow the authors to quickly find their work and send the appropriate links directly to CalculatorTI and GoDaddy.

Example:

CalculatorTI |	Real Source |	Author
CTI-Link	ticalc-link	comic

CTI-Link

omnimaga-link

Camelot

Or you could just ddos their website through tor and they will run away like little babies.
Job done

No, such a thing usually just fuels anger and doesn't help to solve any problem at all.
Besides, that would be illegal.

Or you could just ddos their website through tor and they will run away like little babies.
Job done

Well, that's definitely not the right answer. I assume you were joking, but not all people will see your invisible sarcasm tags unfortunately.

@Hayleia http://tiwizard.com/downloads/super-smash-bros-ti-83-ti-84/

Yet another site.

That one says "Developed by Hayleia", though

Yea, that one seems a bit different because they credit the authors and don't claim that any of the programs are theirs.

This is true.They are still hosting without permission though. If someone uploads something without an explicit license is protected by copyright and is by default All Rights Reserved. This means that to host it you need permission from the author.

I do have to say though, the owner of that second site has good taste in games. Dying Eyes is even on there. I really need to replay that game.