This is a list of resources, such as dedicated web sites or apps where you can post or find second hand items (vintage or thrifting). Some are country specific, some are available or have groups in several countries.
Rules:No suspicious links, NSFW links or scam/phishing/malware. The list will be curated, if need be.
Worldwide (common in several countries)
Freecycle Network - Moderated, free, freecycling only, mainly(?) used in Germany, UK, US
Craigslist - Unmoderated, paid ads for some categories, mainly used in the US and Canada(?)
[iOS app] - [Android app]
Facebook Marketplace - Moderation depends on group, free, in some countries/regions it works but in many others it's rife with scammers and stolen goods
[You already know the link and address]