This is the only params remover add-on I know of that allows entering custom param names. One thing I have noticed that none of them handle is when you're subscribed to an email list and the link is processed by a click tracker before redirecting to the page. In that case the params are not stripped. Here is an example that redirects to a link with four utm params:

http://r20.rs6.net/tn.jsp?f=001mkagUU5Zezno4nuOhM-WtO4wj-D-bRd3ZPyIXebOp9BOE-OROHy_fpTtyqRNSE4V81dPWVnGJuEN3h1PKcpLjuhiJPNd3yS_cnmuSKVLOMxzRfbbREjE9QG8ZiCaq2x2uh4I722A7CrT4dwCPJfYcax-IctoTOr_p3TCU08F5jDoAsAHoh2_azYeIVwoION56N3rrj8tGrPuef1ram2j30o_tuGAVt8sTS3cISV_HYSGeAqtz3uDEnWytMZKV23_edePwjFSQZb43QS4vsLFZshp7fN-nPUYQbBAdSTbwicxaGMeZrtNhv-QpalRSC-S0ysKOH5k1iZpiw4tqU5aUSjjhzbYX6orIZF7skK-sfeHiZlrhlKzh7evWvaEeVeDEIDm4Ax50FanG-rXmSDIP83T-nN1rdHSffz3ldytaGlAgzt2_V5fbhZ4VaLext5D&c=JwLOObRlM9JTqFOJk7bHq3hrC0-PuI0AKQ0yr9Wm8OSBwD4DBQ8w2g==&ch=8gewyUEHYT6AQQoAlMrZ52_s7nlF0WRzNN6NELXrQGjvNOKvNSzIJA==

Wonderful. What a relieve. I was so annoyed by websites adding trash behind my urls. Thanks!