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Planck alternatives & similar sites

Planck Foundation | | integrating all branches of science into comprehensive analyses and models | | Monetary Sciences | | Economic Sciences | | Energy Sciences | | Physical Sciences | | Agricultural Sciences | | Planck Foundation is founded and funded by Gijs Graafland in 1999. — 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 Science →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
arxiv.org ↗	43 match 166 shared linkers · same topic	arXiv.org e-Print archive	en	science	robotsllmsaihumans	emailphone	none
universetoday.com ↗	112 match 166 shared linkers · same topic	Universe Today - Space and Astronomy News	en	space-and-astronomy Lightspeed	robotsllmsaihumans	emailphone	none
ufz.de ↗	111 match 166 shared linkers · same topic	Home - Helmholtz-Centre for Environmental Research	Germany de	environment Spree Commerce	robotsllmsaihumans	emailphone	none
esa.int ↗	56 match 166 shared linkers · same topic	European Space Agency	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
nasa.gov ↗	32 match 166 shared linkers · same topic	NASA	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
williamengdahl.com ↗	85 match shared topic	Planck Foundation \| \| integrating all branches of science into comprehensive analyses and models \| \| Monetary Sciences \| \| Economic Sciences \| \| Energy Sciences \| \| Physical Sciences \| \| Agricultural Sciences \| \| Planck Foundation is founded and funded by Gijs Graafland in 1999.	en	science WordPress Lightspeed	robotsllmsaihumans	emailphone	none
desertcorp.com ↗	85 match shared topic	Planck Foundation \| \| integrating all branches of science into comprehensive analyses and models \| \| Monetary Sciences \| \| Economic Sciences \| \| Energy Sciences \| \| Physical Sciences \| \| Agricultural Sciences \| \| Planck Foundation is founded and funded by Gijs Graafland in 1999.	en	science WordPress Lightspeed	robotsllmsaihumans	emailphone	none
globalfood.info ↗	85 match shared topic	Planck Foundation \| \| integrating all branches of science into comprehensive analyses and models \| \| Monetary Sciences \| \| Economic Sciences \| \| Energy Sciences \| \| Physical Sciences \| \| Agricultural Sciences \| \| Planck Foundation is founded and funded by Gijs Graafland in 1999.	en	science WordPress Lightspeed	robotsllmsaihumans	emailphone	none
worldclusters.com ↗	85 match shared topic	Planck Foundation \| \| integrating all branches of science into comprehensive analyses and models \| \| Monetary Sciences \| \| Economic Sciences \| \| Energy Sciences \| \| Physical Sciences \| \| Agricultural Sciences \| \| Planck Foundation is founded and funded by Gijs Graafland in 1999.	en	science WordPress Lightspeed	robotsllmsaihumans	emailphone	none
intracontinental.org ↗	85 match shared topic	Planck Foundation \| \| integrating all branches of science into comprehensive analyses and models \| \| Monetary Sciences \| \| Economic Sciences \| \| Energy Sciences \| \| Physical Sciences \| \| Agricultural Sciences \| \| Planck Foundation is founded and funded by Gijs Graafland in 1999.	en	science WordPress Lightspeed	robotsllmsaihumans	emailphone	none
simonsfoundation.org ↗	60 match shared topic	Advancing Research in Basic Science and Mathematics \| Simons Foundation	en	science Weebly	robotsllmsaihumans	emailphone	none
openfoun.org ↗	60 match shared topic	Open Foundation	en	science	robotsllmsaihumans	emailphone	none
falling-walls.com ↗	60 match shared topic	Falling Walls Foundation \| Falling Walls	en	science Drupal	robotsllmsaihumans	emailphone	none
sfi.ie ↗	60 match shared topic	Science Foundation Ireland - For What’s Next	Ireland en	science	robotsllmsaihumans	email phone	none
rescorp.org ↗	60 match shared topic	Research Corporation for Science Advancement (RCSA) – Research Corporation for Science Advancement (RCSA) is a foundation providing catalytic funding for innovative scientific research and the development of academic scientists since 1912.	en	science WordPress	robotsllmsaihumans	emailphone	none
galactic.foundation ↗	60 match shared topic	galactic foundation	en	science	robotsllmsaihumans	emailphone	none
zenodo.org ↗	55 match shared topic	Zenodo	en	science	robotsllmsaihumans	emailphone	none
openreview.net ↗	55 match shared topic	Venues \| OpenReview	en	science	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.