Top Science Websites in Bulgaria

Name: Top websites in Bulgaria (Science)
Creator: Semrush
License: https://sem2.royalseotools.com/company/legal/terms-of-service/

Based on data from the Semrush Traffic Analytics tool, this page reveals the most visited websites. We will be updating this list on a monthly basis, so you can keep track of all the market shifts and spot changes in user interest.

Most Visited Science Websites in Bulgaria, Updated September 2026

September 2026

Domain

Visits

Desktop share

Mobile share

MoM

YoY

Main Traffic Source

sorbonne-universite.fr

257.5K

1.31%3.36K

98.69%254.14K

↑1,495.73%

↑10,223.32%

Direct

ncf.bg

100.61K

49.07%49.38K

50.93%51.24K

↑134.73%

↑30.57%

Direct

phys.org

85.36K

2.68%2.29K

97.32%83.07K

↓14.38%

↓42.97%

Direct

space.com

80.46K

6.92%5.57K

93.08%74.89K

↓17.49%

↓65%

Direct

sciencedirect.com

73.99K

41.97%31.05K

58.03%42.94K

↑60.32%

↓38.75%

Direct

understandingwar.org

40.14K

3.7%1.49K

96.3%38.65K

↑128.86%

↓25.16%

Direct

mdpi.com

34.36K

83.53%28.7K

16.47%5.66K

↑16.13%

↓1.67%

Direct

elsevier.com

33.42K

53.71%17.95K

46.29%15.47K

↑87.59%

↓5.19%

Referral

uni-potsdam.de

32.51K

-

100%32.51K

↑10.58%

↑49.93%

Direct

wiley.com

30.98K

47.08%14.59K

52.92%16.39K

↑47.81%

↓15.78%

Search

arxiv.org

29.9K

58.77%17.57K

41.23%12.33K

↓29.03%

↑77.68%

Direct

tue.nl

26.71K

9.96%2.66K

90.04%24.05K

↑293.89%

↑386.46%

Direct

emsc.eu

22.17K

5.1%1.13K

94.9%21.04K

↑86.77%

↓48.46%

Search

telescopius.com

18.67K

-

100%18.67K

↑193.95%

↑43.87%

Direct

overleaf.com

18.52K

100%18.52K

-

↑20.48%

↑93.72%

Direct

doi.org

17.28K

26.87%4.64K

73.13%12.64K

↑32.53%

↓10.33%

Referral

orcid.org

13.88K

76.9%10.67K

23.1%3.21K

↑12.06%

↑16.05%

Search

univie.ac.at

13.76K

61.91%8.52K

38.09%5.24K

↓0.52%

↓31.03%

Direct

iaja.site

12.32K

6.84%842

93.16%11.48K

↑1,221.67%

↓4.8%

Direct

tudelft.nl

11.36K

68.36%7.76K

31.64%3.59K

↑16.86%

↑31.32%

Direct

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Key Insights on Top Science Websites in Bulgaria on September 2026

As of September 2026, sorbonne-universite.fr leads Science in Bulgaria with 257.5K monthly visits. Its audience skews mobile-first (1.31% desktop / 1.31% mobile), and traffic is up month over month 1,495.73% and up year over year 10,223.32%. ncf.bg holds second with 100.61K visits and a mobile-leaning mix (49.07% desktop / 50.93% mobile), while phys.org ranks third with 85.36K visits.

Across the leaders, uni-potsdam.de is the most mobile-first (100% of visits), whereas overleaf.com is the most desktop-reliant (100%). Momentum favors uol.de in the latest month (11,306.38%), while oyunlarim.com.tr shows the steepest pullback.

Acquisition patterns also differ: sorbonne-universite.fr is driven primarily by search, sorbonne-universite.fr by direct, and sorbonne-universite.fr by referral; overall, 70 of the top 100 sites are direct-led, 19 are search-led, and 8 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.

Top Science Websites in Bulgaria