Self-Hosted Alternatives to Popular Services

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The original was posted on /r/selfhosted by /u/doolittledoolate on 2025-01-09 15:11:11+00:00.

Essentially I want to close down or purge some accounts but I want the data to be accessible if I ever want to go back to it. Sometimes the only place I can find something is an old Reddit post on an old account.

I want something to download them all, delete the content (can be a different tool), and make archives available.

I have a WhatsApp backup already and tried using some of the HTML viewers, but some of the chats are so big (millions of messages) that it crashes my browser. I'd need something like Whatsapp Web where it only loads a few messages but you can search and click to load older ones.