The T-match can match antennas that present a wide range of impedances. It's unbalanced. So you can use it with end-fed wires and the like. Or even coax-fed antennas. That's fine if the antenna is only slightly off. But otherwise bear in mind the risk of significantly increased losses if there is a large mismatch and a long run of coax.
If you'd like to build a T-match antenna coupler here's a few ideas to get you started:
* KC8AON's mini T-match
* VK5AJL T-match antenna couplers
* VK6YSF T-match antenna coupler
* W4ULD Getting the most out of our T-match (pdf)