Top Science Websites in the World

Key Insights on Top Science Websites in the World on December 2025

As of December 2025, sciencedirect.com leads Science in the World with 80.92M monthly visits. Its audience skews desktop-first (73.6% desktop / 73.6% mobile), and traffic is down month over month -13.99% and down year over year -2.69%. phys.org holds second with 54.35M visits and a mobile-leaning mix (1.87% desktop / 98.13% mobile), while overleaf.com ranks third with 34.23M visits.

Across the leaders, phys.org is the most mobile-first (98.13% of visits), whereas x-mol.com is the most desktop-reliant (99.3%). Momentum favors focusgroup.com in the latest month (75.03%), while tu-dresden.de shows the steepest pullback. On a yearly view, focusgroups.org posts the strongest expansion (571.22%), contrasted with space.com (-66.25%).

Acquisition patterns also differ: sciencedirect.com is driven primarily by search, sciencedirect.com by direct, and sciencedirect.com by referral; overall, 86 of the top 100 sites are direct-led, 11 are search-led, and 3 lean on social.

These insights come from the Traffic & Market Toolkit, enriched with extensive clickstream data.

Our AI algorithms analyze petabytes of information from a blend of proprietary and external data pools, reflecting the online activities of over 200 million anonymized users.

For more detailed information on our data-gathering and analysis process, please visit our information page here.