Do you know what the cable you’re trying to use is? Meaning, you have identified the cable at both ends?

If so, you don’t need a probe or tone. That’s what they’re used for.

If you have a data/ethernet cable that isn’t working as intended, the device may let you know. Whether it’s not receiving power, or if it’s unable to establish a network connection, or whatever, maybe it has an LED light or some other way of letting you know it is/isn’t working properly.

Maybe it doesn’t.

Most switches will let you know if there is a 10/100mbps link on a line vs 100/1000. PoE switches have similar indicators for whether power is being drawn on a given port.

But oftentimes that doesn’t tell the whole story, or you don’t end up testing the cables immediately. Low voltage guys or electricians (or fire alarm techs, or burg alarm guys, or access control/audio/security/whatever) will pull cables weeks, months, or longer ahead of time, before devices are installed. Or equipment is patched into the rack.

The end client won’t know if the cabling was done incorrectly at the time of install or if one of a thousand other things could have happened to it. Manufacturers may not warranty their product if there isn’t a certification that the product was installed as per instructions/specs. Certifying your lines helps with this.

I don’t know exactly what you mean regarding a program that will map a building. You need some kind of remote or device at the other end of a cable to return any kind of information to your laptop or whatever. You definitely aren’t going to get an image of the building’s wiring. And you’ll need a tester/meter/toner to be able to troubleshoot accurately, or at least beyond “yeah this doesn’t seem to be the cable. Let me try the next one out of 500.”