You can also try these related scripts:

• SteamGifts & SteamTrades - Notification Merger - Merge notifications of both steamgifts and steamtrades
• SteamTrades - Have List Filter - Check if you own the games from someone's have list (instant Compare2Steam)
• SteamTrades - Have List Filter (Barter.vg) - Check if you own the games from someone's have list (instant Compare2Steam) using Barter.vg