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Idea Arc alternatives & similar sites

一般社団法人 IDEA Arc — 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 Adult Education →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
rongokikou.com ↗	72 match 1 shared topics	一般社団法人論語教育普及機構	ja	adult-education	robotsllmsaihumans	emailphone	none
kushiroacademy.com ↗	67 match 1 shared topics	一般社団法人くしろアカデミー｜こども・若者の学びと防災の拠点	ja	adult-education	robotsllmsaihumans	emailphone	none
minna-happy.com ↗	66 match 1 shared topics	一般社団法人みんなの笑顔と幸せ – フリースクール「わくわく探究スクール」運営	ja	adult-education WordPress	robotsllmsaihumans	emailphone	none
hougakuken.org ↗	65 match 1 shared topics	一般社団法人日本宝石学教育研究所 - 宝石学を学び、宝石の魅力を一緒に探求するなら	ja	adult-education WordPress WooCommerce	robotsllmsaihumans	emailphone	none
mira-morioka.com ↗	65 match 1 shared topics	公益財団法人盛岡国際交流協会(MIRA)	ja	adult-education WordPress	robotsllmsaihumans	emailphone	none
hhgrow.org ↗	64 match 1 shared topics	公益財団法人東広島市教育文化振興事業団	ja	adult-education	robotsllmsaihumans	email phone	none
subcon-d.com ↗	62 match 1 shared topics	コアソリューションアカデミア – 一般社団法人　コアソリューションアカデミアはオリジナル心理ツールRYC®メソッドをはじめとした様々なコンテンツをご提供、講座を提供しています。すべての人が、自分の本質を	ja	adult-education WordPress	robotsllmsaihumans	emailphone	none
minamiaso-naikan.com ↗	62 match 1 shared topics	南阿蘇内観研修所	ja	adult-education	robotsllmsaihumans	email phone	partial · 8
kyucc.com ↗	62 match 1 shared topics	九州市民大学　公式ホームページ	ja	adult-education	robotsllmsaihumans	emailphone	none
doubou-centre.com ↗	61 match 1 shared topics	（一財）同和教育振興会	ja	adult-education WordPress	robotsllmsaihumans	emailphone	none
kyougakukyousou.com ↗	60 match 1 shared topics	【公式】伴走者のための共学共創コミュニティ	ja	adult-education WordPress	robotsllmsaihumans	emailphone	none
classy-lessons.com ↗	60 match 1 shared topics	宝塚受験スクール Classy Lessons \| 東京・銀座	ja	adult-education WordPress	robots llmsaihumans	emailphone	none
hellopc-kochibest.net ↗	60 match 1 shared topics	高知市、知寄のハロー！パソコン教室　ベスト電器高知本店校	ja	adult-education	robotsllmsaihumans	emailphone	none
hesono.org ↗	60 match 1 shared topics	HESO no – What ?	ja	adult-education WordPress	robotsllmsaihumans	emailphone	none
hibarigaoka-pc.net ↗	60 match 1 shared topics	西東京市、ひばりヶ丘のハロー！パソコン教室　西友ひばりヶ丘校	ja	adult-education	robotsllmsaihumans	emailphone	none
higasimatuyama-pc.net ↗	60 match 1 shared topics	埼玉県、東松山のハロー！パソコン教室　トライアル東松山校	ja	adult-education	robotsllmsaihumans	emailphone	none
hikikomoriworld.org ↗	60 match 1 shared topics	ひきこもりスクール（ひきこもり防止三原則）	ja	adult-education	robotsllmsaihumans	emailphone	none
hn21shimonoseki.com ↗	60 match 1 shared topics	ヒューマンネット21下関 / 人生大学PJ – ヒューマンネット21下関 / 人生大学PJで豊かな人生を実現しませんか	ja	adult-education WordPress	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.