Skip to content
gitdebt

CSS frameworks: star history compared

Most starred

175k

twbs/bootstrap

Bootstrap owned an entire decade of the web, and its star history shows it — a curve so early and so large that everything since gets judged against it. Tailwind's utility-first bet looked contrarian in 2019 and inevitable by 2022; the crossover between those two lines is one of the cleanest changing-of-the-guard moments on GitHub. Bulma, UnoCSS and Pico each carve out real niches in the gaps.

Ranked by current GitHub stars · growth = stars gained in the trailing 90 days · data updated Sep 2026

CSS frameworks — star history
207k STARS15 YR 1 MOtwbs/bootstrap207ktailwindlabs/tailwindcss97kjgthms/bulma57kunocss/unocss17kpicocss/pico16k

twbs/bootstrap: 207,220 stars on September 14, 2026. tailwindlabs/tailwindcss: 97,162 stars on September 15, 2026. jgthms/bulma: 57,228 stars on September 13, 2026. unocss/unocss: 17,448 stars on September 15, 2026. picocss/pico: 15,835 stars on September 15, 2026.

Star history for twbs/bootstrap
DateStars
August 19, 2011972
October 22, 20117715
December 26, 201111625
March 1, 201219467
November 15, 201223508
January 19, 201327064
March 25, 201331814
May 29, 201335890
August 2, 201340503
October 6, 201345340
December 23, 201349454
February 26, 201452674
May 2, 201455829
July 6, 201458648
September 8, 201461616
November 12, 201465082
January 16, 201568137
March 22, 201571552
May 26, 201574912
July 30, 201578405
October 3, 201582552
December 7, 201585996
February 11, 201689370
April 16, 201692763
June 20, 201695973
August 24, 201699200
October 28, 2016103308
December 31, 2016106490
March 6, 2017110919
May 10, 2017114861
July 27, 2017118680
September 30, 2017122394
December 4, 2017126230
February 7, 2018130002
April 14, 2018132991
June 18, 2018135480
August 22, 2018137603
October 26, 2018139708
December 30, 2018141676
March 5, 2019143989
May 8, 2019146680
July 12, 2019148927
September 15, 2019150861
November 19, 2019152752
January 23, 2020154747
March 28, 2020156737
June 1, 2020159285
August 5, 2020162268
October 10, 2020164125
December 14, 2020165985
March 2, 2021169759
May 6, 2021171556
July 13, 2021173990
September 18, 2021175688
November 27, 2021176951
January 31, 2022178696
April 6, 2022180383
June 10, 2022182526
August 14, 2022184103
October 18, 2022185697
December 22, 2022187067
February 25, 2023188677
May 1, 2023190356
July 5, 2023192225
September 8, 2023193399
November 12, 2023194533
January 15, 2024195537
March 20, 2024196734
May 24, 2024197859
July 28, 2024199114
October 14, 2024201915
December 18, 2024202944
February 21, 2025203817
April 27, 2025204906
July 1, 2025205498
September 4, 2025206258
November 16, 2025206622
January 20, 2026206888
April 6, 2026207085
September 14, 2026207220
Star history for tailwindlabs/tailwindcss
DateStars
October 6, 201718
November 19, 20172637
December 29, 20173362
February 7, 20183833
March 18, 20184451
April 28, 20184820
June 7, 20185277
July 16, 20185665
August 25, 20186135
October 4, 20186907
November 21, 20187593
December 30, 20188063
February 8, 20198629
March 20, 20199407
April 28, 201910619
June 7, 201912119
July 17, 201913123
August 26, 201914102
October 4, 201915048
November 13, 201916733
December 23, 201918017
January 31, 202019308
March 11, 202020941
April 20, 202022148
May 30, 202024119
July 8, 202025570
August 17, 202027218
September 27, 202028633
November 5, 202030380
December 15, 202034073
February 1, 202137371
March 12, 202139572
April 21, 202142085
June 3, 202143948
July 13, 202146290
August 21, 202147839
October 2, 202149405
November 14, 202150576
December 23, 202152949
February 1, 202255170
March 13, 202256607
April 22, 202258101
May 31, 202259690
July 10, 202261061
August 19, 202262380
September 27, 202263604
November 6, 202264808
December 16, 202266003
January 25, 202367411
March 5, 202368782
April 22, 202370562
June 1, 202372211
July 10, 202373396
August 19, 202374687
September 28, 202375850
November 6, 202377060
December 16, 202378094
January 25, 202479658
March 5, 202480883
April 13, 202482358
May 23, 202483438
July 2, 202484754
August 10, 202485821
September 19, 202486918
October 29, 202487858
December 8, 202488957
January 16, 202589876
February 25, 202591370
April 6, 202592437
May 15, 202593342
July 2, 202594107
August 11, 202594698
September 20, 202595213
November 4, 202595561
December 14, 202595852
January 23, 202696530
March 3, 202696793
April 13, 202696975
June 1, 202697065
September 15, 202697162
Star history for jgthms/bulma
DateStars
January 24, 20162
March 8, 20165838
April 22, 20166369
June 6, 20166910
July 21, 20167391
September 4, 20169173
October 18, 20169919
December 2, 201610926
January 16, 201712192
March 2, 201713809
April 25, 201715514
June 9, 201716887
July 23, 201718339
September 6, 201720074
October 21, 201721711
December 5, 201723909
January 19, 201825272
March 4, 201826639
April 19, 201827868
June 3, 201829128
July 18, 201830191
September 1, 201831413
October 16, 201832377
November 29, 201833347
January 13, 201934227
February 27, 201935285
April 13, 201936359
May 28, 201937287
July 12, 201938171
August 25, 201938921
October 18, 201939865
December 2, 201940536
January 16, 202041193
March 1, 202041858
April 14, 202042573
May 29, 202043422
July 13, 202044064
August 28, 202044709
October 12, 202045310
November 26, 202045854
January 9, 202146333
February 23, 202146946
April 9, 202147506
May 27, 202147912
July 11, 202148353
August 28, 202148729
October 12, 202149037
December 4, 202149343
January 18, 202249708
March 4, 202250069
April 27, 202250455
June 10, 202250752
July 25, 202251016
September 8, 202251337
October 23, 202251618
December 8, 202251925
January 23, 202352194
March 8, 202352503
April 22, 202352789
June 6, 202352995
July 21, 202353214
September 5, 202353424
October 22, 202353621
December 7, 202353800
January 22, 202454005
March 7, 202454246
April 22, 202454926
June 6, 202455182
July 20, 202455440
September 4, 202455787
October 29, 202456091
December 14, 202456254
January 31, 202556441
March 17, 202556635
May 1, 202556786
June 23, 202556909
August 22, 202557012
November 7, 202557093
January 21, 202657173
September 13, 202657228
Star history for unocss/unocss
DateStars
October 29, 20214
November 17, 2021904
December 7, 20211362
December 26, 20211697
January 15, 20221983
February 4, 20222105
February 23, 20222325
March 15, 20222779
April 3, 20223052
April 23, 20223298
May 17, 20223850
June 5, 20224094
June 25, 20224534
July 14, 20224790
August 3, 20225049
August 23, 20225377
September 11, 20225657
October 1, 20225966
October 20, 20226253
November 9, 20226477
November 29, 20226714
December 18, 20226882
January 7, 20237238
January 26, 20237717
February 15, 20238054
March 7, 20238441
March 26, 20238687
April 15, 20239669
May 5, 202310228
May 24, 202310588
June 17, 202310941
July 6, 202311231
July 26, 202311488
August 15, 202311745
September 3, 202312092
September 23, 202312352
October 12, 202312548
November 1, 202312771
November 21, 202312939
December 11, 202313121
December 31, 202313441
January 19, 202413661
February 8, 202413827
February 28, 202413966
March 18, 202414129
April 7, 202414281
April 26, 202414423
May 16, 202414586
June 5, 202414713
June 24, 202414813
July 18, 202414983
August 6, 202415105
August 26, 202415258
September 15, 202415384
October 4, 202415478
October 24, 202415619
November 13, 202415728
December 2, 202415841
December 22, 202415953
January 10, 202516062
January 30, 202516185
February 19, 202516299
March 10, 202516434
March 30, 202516572
April 18, 202516692
May 8, 202516781
May 28, 202516858
June 17, 202516915
July 8, 202516976
July 28, 202517037
August 21, 202517094
September 13, 202517140
October 8, 202517184
November 11, 202517225
December 6, 202517258
December 30, 202517308
January 29, 202617359
February 24, 202617392
April 11, 202617423
September 15, 202617448
Star history for picocss/pico
DateStars
November 28, 20191
September 21, 202034
December 9, 202060
February 27, 202189
June 22, 2021117
July 27, 2021161
August 23, 2021214
September 20, 2021335
October 21, 2021436
November 20, 2021501
December 19, 20212376
January 10, 20223603
February 1, 20224085
February 23, 20224280
March 18, 20224473
April 9, 20224670
May 1, 20224821
May 23, 20225031
June 14, 20225131
July 6, 20225222
July 28, 20225348
August 20, 20225484
September 12, 20225607
October 4, 20225720
October 26, 20225832
November 17, 20225918
December 9, 20226038
December 31, 20226282
January 22, 20237646
February 13, 20238102
March 12, 20238395
April 3, 20238664
April 25, 20238909
May 17, 20239143
June 8, 20239297
June 30, 20239423
July 23, 20239634
August 14, 20239820
September 5, 202310019
September 27, 202310218
October 19, 202310429
November 10, 202310582
December 2, 202310725
December 25, 202310846
January 17, 202411050
February 8, 202411291
March 1, 202411669
March 23, 202411952
April 14, 202412274
May 6, 202412415
June 2, 202412603
June 24, 202412739
July 16, 202412867
August 7, 202413000
August 29, 202413169
September 20, 202413467
October 12, 202413621
November 3, 202413786
November 26, 202413908
December 18, 202414022
January 9, 202514184
January 31, 202514332
February 23, 202514443
March 17, 202514564
April 8, 202514711
April 30, 202514818
May 23, 202514934
June 14, 202515004
July 8, 202515067
August 1, 202515140
August 29, 202515229
September 21, 202515488
October 18, 202515545
November 12, 202515585
December 11, 202515640
January 11, 202615689
February 7, 202615732
March 5, 202615773
April 21, 202615808
September 15, 202615835

How each series was read

  • twbs/bootstrap

    Historical star data · Covers through September 14, 2026

  • tailwindlabs/tailwindcss

    Historical star data · Covers through September 15, 2026

  • jgthms/bulma

    Historical star data · Covers through September 13, 2026

  • unocss/unocss

    Historical star data · Covers through September 15, 2026

  • picocss/pico

    Historical star data · Covers through September 15, 2026

Ranking

5 repositories

CSS frameworks ranked by current total GitHub stars
#RepositoryStars+90dFirst starHealth
1twbs/bootstrap174,804~602011debt charts
2tailwindlabs/tailwindcss97,561~682017debt charts
3jgthms/bulma50,058~122016debt charts
4unocss/unocss18,961~92021debt charts
5picocss/pico16,859~122019debt charts

Repository health compared

Live analysis · unavailable data stays labelled

Popularity is only one axis. Compare technical scale, maintenance cadence, ownership resilience and change pressure against the same completed analysis that sits behind each report.

Reach

Popularity and real-world adoption

Signaltwbs/bootstraptailwindlabs/tailwindcssjgthms/bulmaunocss/unocsspicocss/pico
GitHub starsCurrent public GitHub metadata total.Best result in this row: 174,80497,56150,05818,96116,859
Stars gained · trailing 90dChange in the newest 90 days covered by each cached series.+60Best result in this row: +68+12+9+12
ForksCurrent public GitHub metadata total.Not availableNot availableNot availableNot availableNot available
Largest package audienceLargest resolved registry total; sources are shown explicitly.No resolved packageNo resolved packageNo resolved packageNo resolved packageNo resolved package
Repository ageElapsed years since the GitHub creation timestamp.15 years8.9 years11 years5.0 years6.8 years

Codebase

Size and technical center of gravity

Signaltwbs/bootstraptailwindlabs/tailwindcssjgthms/bulmaunocss/unocsspicocss/pico
Dominant languageLargest share of analyzed code lines at current HEAD.Not availableNot availableNot availableNot availableNot available
Code linesAnalyzed source lines at current HEAD, excluding blanks and comments.Not availableNot availableNot availableNot availableNot available
Languages representedLanguages with non-zero files or line counts.Not availableNot availableNot availableNot availableNot available

Maintenance

Commit volume and recent operating cadence

Signaltwbs/bootstraptailwindlabs/tailwindcssjgthms/bulmaunocss/unocsspicocss/pico
Repository commitsFull repository commit total reported by the analysis.Not availableNot availableNot availableNot availableNot available
Commits · trailing 90dCommit count in the newest 90 days covered by the repository analysis.Not availableNot availableNot availableNot availableNot available

Ownership

How broadly maintenance responsibility is distributed

Signaltwbs/bootstraptailwindlabs/tailwindcssjgthms/bulmaunocss/unocsspicocss/pico
Bus factorFewest analyzed contributors carrying at least half the commits.Not availableNot availableNot availableNot availableNot available
Top contributor concentrationShare of attributed commits carried by the most active contributor.Not availableNot availableNot availableNot availableNot available

Change signals

Debt markers and fix pressure in frequently changed files

Signaltwbs/bootstraptailwindlabs/tailwindcssjgthms/bulmaunocss/unocsspicocss/pico
Fix-labelled share · frequently changed filesFix-labelled commits divided by commits across the analyzed high-frequency file set.Not availableNot availableNot availableNot availableNot available
Recent TODO/FIXME movementLatest cumulative marker count and its change over the trailing 90 days.Not availableNot availableNot availableNot availableNot available

Head to head

open in the builder

Frequently asked

Which of these css frameworks has the most GitHub stars?

twbs/bootstrap is the most-starred of the css frameworks gitdebt compares, with 174,804 GitHub stars as of Sep 2026. It earned its first star in 2011.

Which of these css frameworks is growing the fastest?

tailwindlabs/tailwindcss added the most stars over the last 90 days of its cached history — about 68 new stars, compared with about 60 for the category leader twbs/bootstrap. 90-day figures are approximate for older repos, whose history is downsampled.

How is this comparison computed?

The table ranks public repository metadata by current total stars. Each curve is that repository's stored star series — read either from GitHub's stargazer list or rebuilt from historical star data — drawn on shared axes, with trailing 90-day growth estimated from it. The legend under the chart names each series' own source and coverage date. Repo-health charts come independently from each repository's commit history.

Related categories

all categories

Fastest-growing repos across all of gitdebt