I do not see many other .22 revolvers that weigh less than a pound. The ones that I do see cost as much or more, like the .22 Ladysmith, which is also an 8 shot.
If you are talking small semi-autos, then there are a number, but the .22 is not as reliable in semi-autos. Plenty of .25, .32 and .380 small, light semi-autos, but they are not .22 caliber with all the advantages of cheap and light ammunition.
If you want a .22 revolver that is very light and high quality, this is one of a very few.
Kel-tec .380 loaded with hollow points. Way smaller than this Ruger.
Don’t even know it’s in my pocket.