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facebook/zstd

Star momentum, maintenance concentration, contributor health, and codebase change — one report built from public repository data.

Open on GitHub
Stars
28,249
History since
2015
Latest star
Nov 2026

Star history

Last 30 days
+255
Last 90 days
+769
Stars / day
6.6
Cumulative stars
stars from January 23, 2015 to November 13, 2026, peaking at 28,247.28k STARS11 YR 10 MO1K10K28kNOV 2026JAN 2015

28,247 stars on November 13, 2026.

stars by date
Datestars
January 23, 20152
February 17, 2015427
March 6, 2015445
April 9, 2015475
May 26, 2015507
June 22, 2015519
August 17, 2015541
October 20, 2015577
November 4, 2015603
December 11, 2015648
February 5, 2016702
February 25, 2016724
April 6, 2016759
May 16, 2016828
May 29, 2016847
June 28, 2016944
July 25, 20161,039
August 5, 20161,057
September 4, 20162,787
September 23, 20163,604
October 3, 20163,718
October 23, 20163,841
November 12, 20163,895
November 24, 20163,916
December 16, 20163,973
January 5, 20174,058
January 15, 20174,093
February 4, 20174,183
February 24, 20174,265
March 5, 20174,288
March 26, 20174,417
April 18, 20174,461
April 28, 20174,499
May 18, 20174,565
June 8, 20174,619
June 19, 20174,648
July 10, 20174,731
August 1, 20174,776
August 12, 20174,802
September 4, 20174,880
September 26, 20174,953
October 6, 20174,979
October 28, 20175,049
November 19, 20175,130
November 30, 20175,164
December 21, 20175,223
January 11, 20185,295
January 22, 20185,343
February 10, 20185,869
March 2, 20185,952
March 13, 20186,023
April 2, 20186,459
April 23, 20186,589
May 5, 20186,631
May 26, 20186,736
June 15, 20186,846
June 25, 20186,876
July 15, 20186,996
August 3, 20187,091
August 13, 20187,127
September 2, 20187,210
September 23, 20187,283
October 13, 20187,375
October 24, 20187,412
November 13, 20187,523
December 3, 20188,292
December 13, 20188,348
January 2, 20198,463
January 22, 20198,583
February 1, 20198,642
February 22, 20198,735
March 15, 20198,807
March 25, 20198,865
April 14, 20198,959
May 5, 20199,193
May 15, 20199,242
June 4, 20199,323
June 23, 20199,431
July 3, 20199,482
July 24, 20199,777
August 13, 20199,903
August 23, 20199,962
September 13, 201910,057
October 3, 201910,162
October 14, 201910,220
November 3, 201910,357
November 22, 201910,526
December 2, 201910,589
December 22, 201910,683
January 12, 202010,827
January 22, 202010,874
February 13, 202010,942
March 4, 202011,041
March 14, 202011,090
April 4, 202011,176
April 24, 202011,262
May 4, 202011,303
May 24, 202011,493
June 13, 202011,621
June 23, 202011,657
July 13, 202011,752
August 2, 202011,851
August 12, 202011,896
September 2, 202011,997
September 22, 202012,087
October 2, 202012,151
October 21, 202012,300
November 10, 202012,463
November 20, 202012,520
December 10, 202012,631
December 30, 202013,018
January 9, 202113,085
January 29, 202113,221
February 18, 202113,311
February 28, 202113,370
March 19, 202113,523
April 8, 202113,642
April 18, 202113,718
May 8, 202113,893
May 28, 202114,192
June 7, 202114,259
June 27, 202114,359
July 17, 202114,486
July 28, 202114,543
August 17, 202114,634
September 5, 202114,757
September 15, 202114,813
October 6, 202114,904
October 26, 202115,024
November 5, 202115,072
November 25, 202115,197
December 15, 202115,336
December 25, 202115,438
January 14, 202215,557
February 2, 202215,711
February 12, 202215,768
March 4, 202215,899
March 24, 202216,006
April 3, 202216,053
April 23, 202216,148
May 13, 202216,240
May 23, 202216,294
June 12, 202216,410
July 2, 202216,557
July 11, 202216,604
July 31, 202216,715
August 20, 202216,998
August 30, 202217,447
September 19, 202217,655
October 9, 202217,783
October 19, 202217,872
November 8, 202218,010
November 28, 202218,122
December 8, 202218,180
December 27, 202218,577
January 16, 202318,715
January 26, 202318,765
February 15, 202318,966
March 7, 202319,094
March 17, 202319,191
April 7, 202319,355
April 27, 202319,522
May 7, 202319,585
May 26, 202319,711
June 15, 202319,819
June 25, 202319,876
July 15, 202320,005
August 4, 202320,121
August 14, 202320,173
September 3, 202320,282
September 23, 202320,402
October 3, 202320,457
October 23, 202320,555
November 11, 202320,657
November 21, 202320,721
December 12, 202320,856
January 2, 202420,972
January 12, 202421,017
February 1, 202421,132
February 21, 202421,285
March 12, 202421,447
March 22, 202421,541
April 10, 202421,793
April 30, 202421,937
May 10, 202421,998
May 30, 202422,105
June 19, 202422,219
June 29, 202422,274
July 19, 202422,378
August 8, 202422,504
August 18, 202422,572
September 7, 202422,716
September 26, 202422,912
October 6, 202423,000
October 26, 202423,167
November 16, 202423,317
November 26, 202423,398
December 16, 202423,526
January 5, 202523,666
January 15, 202523,732
February 4, 202523,845
February 23, 202523,998
March 5, 202524,073
March 25, 202524,205
April 14, 202524,342
April 24, 202524,401
May 14, 202524,544
June 3, 202524,683
June 13, 202524,728
July 3, 202524,871
July 23, 202525,015
August 1, 202525,065
August 21, 202525,201
September 10, 202525,309
September 20, 202525,372
October 10, 202525,534
October 30, 202525,675
November 9, 202525,732
November 29, 202525,858
December 19, 202525,993
December 29, 202526,060
January 17, 202626,172
February 6, 202626,324
February 16, 202626,400
March 8, 202626,560
March 28, 202626,682
April 7, 202626,743
April 27, 202626,858
May 18, 202626,970
May 28, 202627,026
June 16, 202627,140
July 6, 202627,256
July 16, 202627,307
August 5, 202627,432
August 25, 202627,551
September 4, 202627,635
September 24, 202627,881
October 14, 202627,992
October 24, 202628,069
November 13, 202628,247

The last 90 days run ahead of this repository's lifetime average.

Star milestones: 100 around Feb 20151k around Jul 201610k around Sep 2019

The commit history reads facebook/zstd a second time

methodology

Fix-labelled changes, file change frequency, ownership concentration and maintenance cadence, each computed from this repository's analyzed commit window. None of them is derived from stars, which is why they are allowed to disagree with the curve above.

Fix-labelled changes
Fix-labelled changes for facebook/zstd
File change frequency
File change frequency for facebook/zstd
Bus factor
Bus factor for facebook/zstd
Maintenance pulse
Maintenance pulse for facebook/zstd
Contributors
Contributors for facebook/zstd
Language activity
Language activity for facebook/zstd
Commit activity
Commit activity for facebook/zstd
Recent TODO/FIXME movement
Recent TODO/FIXME movement for facebook/zstd

Attention is not adoption.

Stars against usage

No published package was detected for this repository, so there is nothing to lay over star growth.

Earned badges

badge studio

Maintenance, ownership and star-momentum signals, computed from the same commit and star history and embeddable as static images.

Reading badge evidence for facebook/zstd.

Notes on facebook/zstd

How many stars does facebook/zstd have?
GitHub currently reports 28,249 stars for facebook/zstd, with about 769 of them added in the last 90 days.
How fast is zstd growing?
facebook/zstd gained about 769 stars over the last 90 days of its history (about 255 in the last 30) — figures are approximate for older repos, whose star history is downsampled. That's faster than its lifetime average growth pace.
Is zstd still active?
facebook/zstd is still attracting attention — about 255 new GitHub stars in the most recent 30 days of its history. For commit-level signals, see the commit activity heatmap, commit trend, and contributors charts on this page.
When was zstd created?
facebook/zstd was created on January 24, 2015 and earned its first GitHub star in Jan 2015.

Read zstd against a neighbour

comparison builder
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Put this drawing in your README

markdown for agents

The block below publishes the chart with its source and coverage date stated beside it — the same three facts the title block above shows, as text a reader can check. The prompt underneath hands a coding agent the badges and repo-health charts as well.

README.md · facebook/zstd star history
<a href="https://gitdebt.com/facebook/zstd?ref=readme">
  <picture>
    <source media="(prefers-color-scheme: dark)" srcset="https://api.gitdebt.com/api/repos/facebook/zstd/chart.svg?theme=dark" />
    <img alt="facebook/zstd star history" src="https://api.gitdebt.com/api/repos/facebook/zstd/chart.svg?theme=light" />
  </picture>
</a>

<sub>Star history source: GitHub star history · Covers through November 14, 2026 · Still updating — <a href="https://gitdebt.com/facebook/zstd?ref=readme">gitdebt</a></sub>

Light and dark variants, alt text, and one provenance line. Provenance is text in your README, never baked into the image URL, so the chart stays cacheable.

Paste it into Claude Code, Cursor, Codex, or any coding agent with your checkout open. It carries the measured numbers, the exact snippets, and the rules — including replacing an existing star-history widget in place rather than stacking a second chart under it.