species identification - What insect is this? Looks like a spider but with six legs and long antennae - Biology Stack Exchange

I've been spotting some of these insects in my house lately, they look like spiders but it seems like they have six legs and antennae instead of eight legs. Can someone tell me what insect is this?

Diptera Bugging You From San Juan Island

Diptera Bugging You From San Juan Island

species identification - What kind of insect is this? It looks like a huge spider with one long antenna and six legs - Biology Stack Exchange

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beige fuzzy insect with six legs, long antenna and 3 tails