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Rddplus alternatives & similar sites

RDD+ | Product Design and Development | Prototyping — 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 Design →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
a2inc.com ↗	81 match 1 shared topics	A2 Inc \| Product Design and Development	United States~ en	design	robotsllmsaihumans	emailphone	none
ehpdi.com ↗	78 match 1 shared topics	EH Product Development - Home	en	design	robotsllmsaihumans	emailphone	none
customproductdesignanddevelopment.com ↗	76 match 1 shared topics	Custom Product Design And Development - CPDAD	United States~ en	design	robotsllmsaihumans	emailphone	none
melodymartindesign.com ↗	76 match 1 shared topics	Melody Martin Design \| Product Design \| Product Development	en	design	robotsllmsaihumans	emailphone	none
designfab.co.uk ↗	75 match 1 shared topics	DesignFab – Electronic Design \| Product Development \| Design Engineering	United Kingdom en	design WordPress	robotsllmsaihumans	emailphone	none
twohabits.com ↗	75 match 1 shared topics	TwoHabits — Design and development studio	en	design Gumroad	robotsllmsaihumans	emailphone	none
2bstudio.com ↗	75 match 1 shared topics	Design Driven Product Development \| Grand Rapids, Michigan \| 2B Studio	en	design Wix	robots llmsaihumans	emailphone	none
sgustokstudio.com ↗	75 match 1 shared topics	Sgustok Studio — Product Design, Art Direction and Digital development	en	design	robotsllmsaihumans	emailphone	none
i-f-i.net ↗	73 match 1 shared topics	IFI — Design Strategy & Development	en	design	robotsllmsaihumans	emailphone	none
asilalptekin.com ↗	73 match 1 shared topics	Asil \| Product Designer	en	design	robotsllmsaihumans	emailphone	none
philipreadman.com ↗	72 match 1 shared topics	Philip Readman \| Product Design	en	design	robotsllmsaihumans	emailphone	none
einheitdesign.com ↗	72 match 1 shared topics	Industrial Design and Advanced Prototyping \| Einheit Design \| Pune	en	design Wix Wix Stores	robots llmsaihumans	emailphone	none
katieproulx.com ↗	72 match 1 shared topics	Katie Proulx \| Product Designer	en	design	robotsllmsaihumans	emailphone	none
chentseng.com ↗	72 match 1 shared topics	Chen Tseng \| Product Designer	en	design Wix	robots llmsaihumans	emailphone	none
mikelai.com ↗	72 match 1 shared topics	Mike Lai \| Product Design - Home	en	design Weebly	robotsllmsaihumans	emailphone	none
shadiqbal.com ↗	72 match 1 shared topics	Shad Iqbal \| Product Design Leader	en	design	robotsllmsaihumans	emailphone	partial · 8
tutusdesign.com ↗	72 match 1 shared topics	Yunwen Tu — Product Designer	en	design	robotsllmsaihumans	emailphone	none
eigencad.com ↗	72 match 1 shared topics	Product Design \| EigenCAD	en	design Wix	robots llmsaihumans	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.