"no matter how many times they describe the clothing of the future, it always sounds like long underwear"- The Making of Star Trek

Depends on how far in the future you want to go. WH40k is about 38,000 years or so, there's a host of links at the Freepository at Daz. Check for Star Trek, Star Wars, etc., things, in Freestuff here, and the Marketplace, of course. RDNA has some good helmets, and other techno stuff in their freebies. Vanishing Point has some uniforms, armor, etc., etc.

Apollo Maximus has links to some futuristic stuff (an arm computer comes to mind), at the central site. Someone has a tag line with the link, just pop in some threads for Apollo here (do a search), and that'll have the link.

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)