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Ossaj alternatives & similar sites

オープンソースソフトウェア協会 – OSSAJ : Open Source Software Association of Japan — 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 Software And Applications →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
aoky.net ↗	64 match 2 shared topics	Fine Software Writings	ja	technology-and-computing	robotsllmsaihumans	emailphone	none
mchkn.com ↗	63 match 2 shared topics	Mochiken, Software Engineer	ja	software-and-applications	robotsllmsaihumans	emailphone	none
anote.work ↗	62 match 2 shared topics	aNote - ノートを開けばITライフがもっと便利に	ja	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
1gon.org ↗	60 match 2 shared topics	モノゴン	ja	technology-and-computing	robotsllmsaihumans	emailphone	none
roobooto.com ↗	60 match 2 shared topics	Roobooto	ja	software-and-applications WordPress	robotsllmsaihumans	emailphone	none
cmaxs-portal.com ↗	41 match 2 shared topics	ホーム :: CMAXS PORTAL	ja	technology-and-computing Concrete5	robotsllmsaihumans	emailphone	none
andoroidogaido.quest ↗	40 match 2 shared topics	androidogaido.quest - androidogaido.quest	ja	smartphones WordPress WooCommerce	robotsllmsaihumans	emailphone	none
4jigenpocket.biz ↗	40 match 2 shared topics	四次元ポケット.Biz	ja	software-and-applications	robotsllmsaihumans	emailphone	none
rokuyon.com ↗	40 match 2 shared topics	RokuyonLog - ちょっとしたメモ書き	ja	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
eftweb.com ↗	36 match 1 shared topics	株式会社エフォート / ソフトウェア開発	ja	software-and-applications	robotsllmsaihumans	emailphone	none
heartsoftware.com ↗	36 match 1 shared topics	ハートソフトウェア｜福岡のソフトウェア開発・ITソリューション	ja	software-and-applications WordPress	robotsllmsaihumans	emailphone	none
efcreate.com ↗	35 match 1 shared topics	ハードウェア設計・ソフトウェア設計のエフ・クリエート	ja	software-and-applications	robotsllmsaihumans	emailphone	none
nkpsystem.com ↗	34 match 1 shared topics	株式会社エヌケーピーシステム \| 株式会社エヌケーピーシステムはソフトウェアの設計や開発を主体とするソフトウェア会社です。	ja	software-and-applications	robotsllmsaihumans	emailphone	none
nixx-co-jp.com ↗	34 match 1 shared topics	ニックス　カンパニーウェアー	ja	software-and-applications	robotsllmsaihumans	emailphone	none
viviware.com ↗	33 match 1 shared topics	VIVIWARE Cell – アイデアを具現化し思考を拡張させるプロトタイピングツール	ja	software-and-applications WordPress	robotsllmsaihumans	emailphone	none
cliple.net ↗	33 match 1 shared topics	スクリーンショットで業務効率化｜クリップる	ja	software-and-applications	robotsllmsaihumans	emailphone	none
lzh-zip.com ↗	33 match 1 shared topics	圧縮・解凍ソフトのガイド　～lzh、zip、rar等、フリーも市販も紹介～	ja	software-and-applications	robotsllmsaihumans	emailphone	none
space-net.info ↗	32 match 1 shared topics	厳密網平均ソフト SPACE NET	ja	software-and-applications	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.