Change Stroke caps with a single click
Change join types by holding Alt/Opt
Available as a panel or for FT-Toolbar
ButtCapper pretty small little script and it only does one thing. It does that one thing very well, but the community of people who work with After Effects deserve one less simple thing to fight the program about.
You are absolutely allowed to change price from FREE to $5 or $10 if you want. I wont stop you at all.
FT-Toolbar is one of only a couple scripts that lives permanently in my After Effects interface. It's great for building buttons to trigger menu items, adding expressions quickly AND running single feature scripts like ButtCapper. Buy it and save yourself some time.