I made an osu collection sharing website before, it's still pretty undone yet but I don't have enough time to work on it, so I feel I'd better share the site before it goes completely outdated.
https://collections.osustuff.ri.mk
currently working:
what will be read / processed locally(on your machine):
https://collections.osustuff.ri.mk
currently working:
- upload collections.
- pick what to upload and what not to: after you picked the osu!.db and collections.db, all collections will be shown at the bottom of the page. green means to upload and red means don't.
- tournament view mode: check "tournament pool mode" when uploading the collection.
- search collections.
- see recent uploaded collections.
- see most viewed uploaded collections.
- web-based beatmap downloader: negotiated with every mirror site from the list. Fair use pls.
- manage uploaded collections: which means you cannot remove it / edit it without reach to me.
- search for anything rather than title.
what will be read / processed locally(on your machine):
- your osu!.db (includes your username, any beatmaps stored locally on your disk.
- your collection.db (includes your collections)
- collections you selected.
- beatmap's information for uploaded beatmaps: see osu!.db definition.
- your local settings for uploaded beatmaps including: local offset.
- anything you filled-in on the page.
- collections you uploaded.
- partially beatmaps' information you uploaded: if the beatmap you uploaded were not in the database.
- your username: was planning to integrate osu OAuth but on halt.
- your local settings for specific beatmap.
- anything you filled-in on the page.