Most Spuffy fics either make Xander a complete a-hole or have him and Spike hate each other. I'm looking for fics were Spike and Xander are friends and the less angst the better.

I like their dynamic in Et Lux in Tenebris by enigmaticblue which is probably a bit frenemies.

I think there is also a friendship evident in The Secret Slayer by maryperk.

Speedway by Jypzrose (Lisa) on Sinister Attraction

Never Just Friends by Moxie on this site

As You Wish by William's Girl not sure where to find it.

I have As You Wish saved if you want it. PM me here on SR.

Distress Signals by PeaceHeather

Grown-up-and-thought-it-out-Xander. Love him

Herself's Bittersweet Series. It starts out with Xander HATING him and Willow is also the worst to Spike, but the series goes on for like forty years, and down the road, Xander and Spike become best buds in a really believable and endearing way. It's a long, dark, twisty story overall.

A Stone's Throw From Yesterday by Eurydice