Runny nose; nose constantly running clear liquid. Is there a nonaddictive nose spray OTC for it?

Not really. Most of the otc nasal sprays contain topical decongestants, which ca cause rebound effect when stopped - "addiction". U need to ask ur doctor to prescribe u a nasal spray.
No. I don't think there is one. There are several prescription nose sprays including astelin, atrovent and patanase. Have you tried Claritin or zyrtec or allegra? Nasal saline spray may help simply by flushing out the allergens. You could also try an older sedating antihistamine such as chlorpheniramine or benadryl (diphenhydramine). They may dry you up more than the newer non sedating antihistamines.