ConversationExchange

ConversationExchange is a simple peer-to-peer directory where you find a conversation partner learning your native language while you learn theirs, then exchange either in person (if local), via email, video call, or voice chat. The model has worked since 2005 because it's mutually beneficial, no subscription needed, and you get real human interaction without paying a tutor.

It's best for self-motivated learners comfortable finding partners and setting their own practice schedule, and for those living in or near a city where in-person meetups are feasible. The quality varies because there's no vetting, so you might match with serious learners or people who ghost after a few messages. But it's free and has been around long enough that many active language learners still use it.