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Halcyonsymbios alternatives & similar sites

4D advies - 4DAdvies — 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 Business Accounting And Finance →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
4dadvies.com ↗	100 match 1 shared topics	4D advies - 4DAdvies	nl	business-accounting-and-finance WordPress WooCommerce	robotsllmsaihumans	emailphone	none
aabjacobs.nu ↗	67 match 1 shared topics	Administratie en Advies Bureau Jacobs	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	emailphone	none
nextgenadministratie.com ↗	67 match 1 shared topics	Nextgen - Administratie en Advies	nl	business-accounting-and-finance	robotsllmsaihumans	emailphone	none
medifin.care ↗	67 match 1 shared topics	Administratie belastingen en advies \| Medifin	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	emailphone	none
administratiekantoor-horst.com ↗	65 match 1 shared topics	Home - Odin Adviseurs	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	emailphone	none
accountants-kosten.info ↗	65 match 1 shared topics	Rood Accountants - Ster(k) in adviseren	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	email phone	none
kantorenplein.online ↗	65 match 1 shared topics	Hét kennis-, advies- en trainingscentrum voor de accountancybranche - Fiscount	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	email phone	none
vlcfiscaaljuridischadvies.com ↗	65 match 1 shared topics	VLC Fiscaal - Juridisch Advies \| Schijnzelfstandigheid zzp voorkomen \| Nederland	nl	business-accounting-and-finance Wix Wix Stores	robots llmsaihumans	emailphone	none
dkaccountants.com ↗	63 match 1 shared topics	DK Accountants & Adviseurs	nl	business-accounting-and-finance Weebly WooCommerce	robots llmsaihumans	emailphone	none
administratiekantoorinbreda.com ↗	63 match 1 shared topics	PTFS \| Administratiekantoor in Breda voor het MKB met vaste maandprijs	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	email phone	none
administratiekantoor-inbreda.com ↗	63 match 1 shared topics	PTFS \| Administratiekantoor in Breda voor het MKB met vaste maandprijs	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	email phone	none
adaerts.online ↗	63 match 1 shared topics	Ad Aerts - Fiscalist	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	emailphone	none
belastica.com ↗	63 match 1 shared topics	Belastica \| Administratiekantoor in Leiden & Voorhout	nl	business-accounting-and-finance	robotsllmsaihumans	email phone	none
mobachadministratieplus.com ↗	63 match 1 shared topics	Mobach Administratie Plus - Ontdek Onze 40 Jaar Financiële Expertise voor Zakelijke Groei	nl	business-accounting-and-finance	robotsllmsaihumans	emailphone	none
adviesbureaubos.net ↗	63 match 1 shared topics	Adviesbureau Bos – Een goede balans is de basis tot succes	nl	business-accounting-and-finance WordPress WooCommerce	robotsllmsaihumans	email phone	none
kantoordejong.frl ↗	63 match 1 shared topics	Home - Administratiekantoor S. de Jong	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	email phone	none
adams.biz ↗	63 match 1 shared topics	Financieel management Amsterdam \| Adams management Services	nl	business-accounting-and-finance WordPress	robotsllmsaihumans	email phone	none
accountability.nu ↗	62 match 1 shared topics	Administratiekantoor en belastingadvies \| Veldhoven, Eindhoven, Valkenswaard \| Accountability \| Accountability Veldhoven \| Administratiekantoor en Fiscaal Advies	nl	business-accounting-and-finance	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.