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bslib on new websites

R package that brings modern Bootstrap themes and layout components to Shiny apps and R Markdown documents.

23 sites via All sites #41 of 126 in UI Library First seen: Jul 26, 2026 Last seen: Oct 11, 2026 Most recent launch: Family Office by Unicorn Real Estate Ltd, Oct 5, 2026 Website: rstudio.github.io

Found via: StackScope Discovery (Indie) 3 · StackScope Wider Web 20

View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

bslib appeared on 8 new sites in the last 30 days.

These figures cover websites that went live since April 2026, not the web as a whole.

Runs on
Bootstrap

Share of new sites using bslib

Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.

0.0%
last 7 days
+0.0pp vs prior week
0.0%
30 days to Oct 16
-0.0pp vs 30 days before
23
sites all time
since Jul 2026
bslib daily detection trend 10 September 2026: we improved our infrastructure to index new sites much sooner, often on the day they go live, so the cohort this share is measured against changes here. 5% 2% 0% Aug Sep Oct Jul 19 · 0 / 27673 = 0.0% Jul 20 · 0 / 24007 = 0.0% Jul 21 · 0 / 22951 = 0.0% Jul 22 · 0 / 24375 = 0.0% Jul 23 · 0 / 18107 = 0.0% Jul 24 · 0 / 13982 = 0.0% Jul 25 · 0 / 9557 = 0.0% Jul 26 · 1 / 21758 = 0.0% Jul 27 · 0 / 37241 = 0.0% Jul 28 · 0 / 41893 = 0.0% Jul 29 · 0 / 53573 = 0.0% Jul 30 · 1 / 48273 = 0.0% Jul 31 · 0 / 56049 = 0.0% Aug 1 · 0 / 54897 = 0.0% Aug 2 · 0 / 53856 = 0.0% Aug 3 · 1 / 52619 = 0.0% Aug 4 · 0 / 40708 = 0.0% Aug 5 · 0 / 35352 = 0.0% Aug 6 · 0 / 39150 = 0.0% Aug 7 · 0 / 40251 = 0.0% Aug 8 · 0 / 42805 = 0.0% Aug 9 · 0 / 37782 = 0.0% Aug 10 · 0 / 32325 = 0.0% Aug 11 · 0 / 34560 = 0.0% Aug 12 · 0 / 37139 = 0.0% Aug 13 · 0 / 55476 = 0.0% Aug 14 · 0 / 56759 = 0.0% Aug 15 · 0 / 55912 = 0.0% Aug 16 · 0 / 56272 = 0.0% Aug 17 · 0 / 46231 = 0.0% Aug 18 · 0 / 57003 = 0.0% Aug 19 · 1 / 51741 = 0.0% Aug 20 · 0 / 69057 = 0.0% Aug 21 · 1 / 93886 = 0.0% Aug 22 · 0 / 94204 = 0.0% Aug 23 · 0 / 93613 = 0.0% Aug 24 · 0 / 81720 = 0.0% Aug 25 · 0 / 71546 = 0.0% Aug 26 · 0 / 66867 = 0.0% Aug 27 · 0 / 87843 = 0.0% Aug 28 · 0 / 87919 = 0.0% Aug 29 · 0 / 88074 = 0.0% Aug 30 · 2 / 100676 = 0.0% Aug 31 · 1 / 100254 = 0.0% Sep 1 · 1 / 103461 = 0.0% Sep 2 · 0 / 108916 = 0.0% Sep 3 · 0 / 103285 = 0.0% Sep 4 · 0 / 98542 = 0.0% Sep 5 · 1 / 102859 = 0.0% Sep 6 · 0 / 89273 = 0.0% Sep 7 · 1 / 86116 = 0.0% Sep 8 · 0 / 77972 = 0.0% Sep 9 · 1 / 75525 = 0.0% Sep 10 · 0 / 83685 = 0.0% Sep 11 · 1 / 85571 = 0.0% Sep 12 · 0 / 56771 = 0.0% Sep 13 · 0 / 57997 = 0.0% Sep 14 · 0 / 59233 = 0.0% Sep 15 · 2 / 58191 = 0.0% Sep 16 · 0 / 59080 = 0.0% Sep 17 · 0 / 56775 = 0.0% Sep 18 · 0 / 53086 = 0.0% Sep 19 · 0 / 45278 = 0.0% Sep 20 · 0 / 44762 = 0.0% Sep 21 · 0 / 51669 = 0.0% Sep 22 · 1 / 55408 = 0.0% Sep 23 · 1 / 58317 = 0.0% Sep 24 · 0 / 53472 = 0.0% Sep 25 · 0 / 50766 = 0.0% Sep 26 · 0 / 101522 = 0.0% Sep 27 · 0 / 52141 = 0.0% Sep 28 · 0 / 61124 = 0.0% Sep 29 · 0 / 77867 = 0.0% Sep 30 · 0 / 69726 = 0.0% Oct 1 · 0 / 69244 = 0.0% Oct 2 · 0 / 64808 = 0.0% Oct 3 · 0 / 53768 = 0.0% Oct 4 · 0 / 52065 = 0.0% Oct 5 · 2 / 63708 = 0.0% Oct 6 · 0 / 67609 = 0.0% Oct 7 · 0 / 67683 = 0.0% Oct 8 · 0 / 69349 = 0.0% Oct 9 · 0 / 70443 = 0.0% Oct 10 · 1 / 60678 = 0.0% Oct 11 · 3 / 65611 = 0.0% Oct 12 · 0 / 66675 = 0.0% Oct 13 · 0 / 71084 = 0.0% Oct 14 · 0 / 70762 = 0.0% Oct 15 · 0 / 93920 = 0.0% Oct 16 · 0 / 66831 = 0.0%
Jul 19, 2026 90 days Oct 16, 2026

The shaded area was measured against a different set of sites, so the line can step there without bslib itself changing.

Coverage details

Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.

The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

What kind of sites use bslib

10 sites with a known type, all time

Developer Tools
30.0%
Health
30.0%
Finance
20.0%
AI
10.0%
Games
10.0%

Domain endings using bslib

23 sites, all time

  • .com 52.2%
  • .org 17.4%
  • .app 8.7%
  • .br 4.4%
  • .ca 4.4%

UI Library leaders

Tool % of sitesall time % of categoryall time
#1 – Lucide Icons 16.2% 96.3%
#2 – shadcn/ui 3.2% 19.4%
#3 – Chakra UI <0.1% 0.2%
#4 – Flowbite <0.1% 0.1%
#5 – Preline UI <0.1% 0.1%
…
#41 ▲7 bslib Current page <0.1% <0.1%

Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any UI Library tool.Among September launches it ranked #40 in UI Library, up from #47 in August. All 126 in UI Library → Related categories: CSS Framework, Javascript Library

Recent launches using bslib

3 of the 23 sites using bslib are product launches we list individually. The other 20 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works

Family Office by Unicorn Real Estate Ltd Oct 5, 2026 · Finance Also detected jQuery AWS Route 53 Bootstrap Lit Stock Loan Data | OCC Stock Loan Program Data & Historical Charts Sep 23, 2026 · Finance Also detected jQuery Bootstrap CDNFonts Cloudflare soilKey Pro Aug 30, 2026 Also detected jQuery Bootstrap Cloudflare DNS Cloudflare Email Routing

The StackScope API serves all 23 sites using bslib, filterable and exportable, from £15 a month.

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