The overall vibe and artistic elements of A Killer Paradox remind me of Inspector Koo. Some of the character's reasonings are similar, but coming from different motivations. A Killer Paradox focuses more on the killer, while Inspector Koo focuses more on the person trying to catch the killer. Both are great a-typical cat-and-mouse chases.
They have a similar feel overall, especially the first 6-ish episodes of Daily Dose Of Sunshine. The characters seem realistic, and most-if not all- are very likable.
Both shows are about cults and escaping/running from them. Save Me is much darker and way more serious, while Glitch has a Sci-Fi element with the aliens.
Other than taking place primarily in schools, the plots are not similar at all, but both of these shows are very unique. Both have a weird vibe to them I cannot describe.