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30D alternatives & similar sites

写真を送る・共有するオンラインアルバム｜SUZURIアルバム（旧30days Album） — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Social Networking →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
4tack.com ↗	35 match 1 shared topics	ヨンタック｜みんなの意見を集めよう。シンプルで直感的なアンケートプラットフォーム	ja	social-networking	robotsllmsaihumans	emailphone	none
threadch.com ↗	35 match 1 shared topics	スレッドチャンネル｜日常の定番から話題のトレンドをスレッドするコミュニティサイト	ja	social-networking	robotsllmsaihumans	emailphone	none
japanese-influencer.com ↗	34 match 1 shared topics	Free Offer \| オファー型インフルエンサーマッチングサービス	ja	social-networking WordPress	robotsllmsaihumans	emailphone	none
japan-pixiv.com ↗	34 match 1 shared topics	Pixiv - 世界最大のイラスト・同人アートSNSコミュニティ	ja	social-networking	robotsllmsaihumans	emailphone	partial · 8
desklyapp.com ↗	34 match 1 shared topics	Deskly - デスクセットアップをシェアするSNS	ja	social-networking	robotsllmsaihumans	emailphone	none
desk-log.com ↗	34 match 1 shared topics	DeskLog - デスク環境を記録・共有・収益化できるSNS	ja	social-networking	robotsllmsaihumans	emailphone	none
ozmate.app ↗	34 match 1 shared topics	OZmate \| オーストラリア生活をつなぐ	ja	social-networking	robotsllmsaihumans	emailphone	none
alis.to ↗	34 match 1 shared topics	ALIS - ブロックチェーンソーシャルメディア	ja	social-networking	robotsllmsaihumans	emailphone	none
japan-services.com ↗	33 match 1 shared topics	Twitterフォロワー、アカウント購入なら激安販売のツイッターズ	ja	social-networking	robotsllmsaihumans	emailphone	none
marumiechat.com ↗	32 match 1 shared topics	まるみえチャット - 匿名ランダムチャット	ja	social-networking	robotsllmsaihumans	emailphone	none
thmoo.com ↗	32 match 1 shared topics	飲み会の話題・日程調整・あみだくじ｜無料ツール - thmoo（ずむー）	ja	social-networking	robotsllmsaihumans	emailphone	none
skon.app ↗	32 match 1 shared topics	SKON \| 地図でシェアするSNS	ja	social-networking	robotsllmsaihumans	emailphone	none
discha.org ↗	32 match 1 shared topics	でぃすちゃ	ja	social-networking	robotsllmsaihumans	emailphone	none
sattome.com ↗	32 match 1 shared topics	サッとMe \| 「読む」のも「書く」のも、10秒で終わるSNS	ja	social-networking	robots llmsaihumans	emailphone	full · 8
discordcafe.app ↗	31 match 1 shared topics	Discord Cafe	ja	social-networking	robotsllmsaihumans	emailphone	none
threefourfive345.com ↗	31 match 1 shared topics	345(threefourfive) -日本で外国人の友達を作れるサイト	ja	social-networking	robotsllmsaihumans	emailphone	none
2poi.net ↗	31 match 1 shared topics	ギコっぽいぽい	ja	social-networking	robotsllmsaihumans	emailphone	none
we-san.com ↗	31 match 1 shared topics	ウエさんの駄弁り場	ja	social-networking	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.