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Vector databases: star history compared

Most starred

46k

milvus-io/milvus

Vector search jumped from an information-retrieval niche to core infrastructure the moment retrieval-augmented generation became the default LLM architecture. The 2022–2023 inflection is visible in every curve in this category — Chroma sprinted from zero alongside the LangChain wave, Qdrant and Weaviate converted the moment into durable growth, and pgvector made the counter-argument that your existing Postgres was the vector database all along.

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

Vector databases — star history
40k STARS10 YR 6 MOmilvus-io/milvus40kfacebookresearch/faiss38kqdrant/qdrant26kchroma-core/chroma23kpgvector/pgvector17kweaviate/weaviate14k

milvus-io/milvus: 40,251 stars on September 15, 2026. facebookresearch/faiss: 37,559 stars on September 16, 2026. qdrant/qdrant: 26,212 stars on September 15, 2026. chroma-core/chroma: 22,719 stars on September 16, 2026. pgvector/pgvector: 17,131 stars on September 16, 2026. weaviate/weaviate: 14,430 stars on September 15, 2026.

Star history for milvus-io/milvus
DateStars
September 16, 20191
November 6, 20191411
December 6, 20192438
January 5, 20202597
February 5, 20202889
March 7, 20203037
April 6, 20203228
May 6, 20203512
June 6, 20203761
July 6, 20203964
August 11, 20204192
September 11, 20204393
October 12, 20204546
November 11, 20204762
December 11, 20205113
January 11, 20215276
February 11, 20215493
March 14, 20215734
April 13, 20215908
May 16, 20216275
June 17, 20216542
July 17, 20217430
August 16, 20217736
September 17, 20218100
October 19, 20218559
November 24, 20218827
December 24, 20219121
January 23, 20229371
February 23, 20229684
March 25, 202210042
April 30, 202210414
May 31, 202210688
July 1, 202211357
July 31, 202211648
August 30, 202212352
September 29, 202213960
October 30, 202214294
November 29, 202214553
December 29, 202214791
January 28, 202314996
February 28, 202315364
March 30, 202316122
April 29, 202318019
May 29, 202319091
June 29, 202320619
July 29, 202321740
August 28, 202322496
September 27, 202323102
October 28, 202323702
November 27, 202324312
January 2, 202425033
February 1, 202425712
March 3, 202426284
April 2, 202427083
May 2, 202427747
June 1, 202428346
July 2, 202428943
August 1, 202429600
August 31, 202430162
September 30, 202430772
October 31, 202431396
November 30, 202432219
December 30, 202432771
January 29, 202533298
March 1, 202534060
March 31, 202534952
April 30, 202535644
May 30, 202536149
June 30, 202536571
July 30, 202536949
September 4, 202537371
October 4, 202537837
November 9, 202538063
December 9, 202539333
January 8, 202639601
February 7, 202639796
March 10, 202639980
April 13, 202640095
May 23, 202640178
September 15, 202640251
Star history for facebookresearch/faiss
DateStars
March 1, 201727
April 11, 20171617
May 24, 20171885
July 7, 20172056
August 20, 20172183
October 7, 20172306
November 20, 20172472
January 2, 20182709
February 13, 20183238
March 27, 20183496
May 18, 20183821
June 28, 20184108
August 10, 20184396
September 21, 20184689
November 3, 20184920
December 15, 20185234
January 27, 20195587
March 9, 20195887
April 20, 20196258
June 1, 20196646
July 13, 20197045
August 24, 20197474
October 5, 20197800
November 15, 20198202
December 27, 20198656
February 7, 20208999
March 19, 20209286
April 30, 20209692
June 11, 202010170
July 23, 202010631
September 13, 202011161
October 24, 202011535
December 5, 202012046
January 17, 202112536
February 28, 202112964
April 11, 202113553
May 26, 202113943
July 6, 202114372
August 17, 202114752
October 1, 202115124
November 19, 202115388
December 31, 202116115
February 11, 202216473
March 24, 202216835
May 5, 202217181
June 16, 202217486
July 27, 202217817
September 7, 202218182
October 19, 202218563
November 29, 202218898
January 18, 202319251
March 1, 202319828
April 12, 202320935
May 24, 202322119
July 4, 202323168
August 15, 202324048
September 26, 202324753
November 6, 202325404
December 18, 202326032
January 29, 202426739
March 10, 202427443
April 21, 202428233
June 2, 202428916
July 13, 202429680
August 24, 202430382
October 5, 202431060
November 15, 202431716
December 27, 202432423
February 7, 202533135
March 20, 202534062
May 9, 202535009
June 20, 202535631
August 1, 202536124
September 11, 202536477
October 29, 202536769
December 10, 202537043
January 20, 202637232
March 4, 202637382
April 21, 202637489
September 16, 202637559
Star history for qdrant/qdrant
DateStars
October 27, 20202
May 3, 202148
June 7, 2021193
July 4, 2021320
August 2, 2021457
September 5, 2021504
October 16, 2021600
November 29, 2021640
January 6, 2022706
January 29, 20221072
February 26, 20221157
March 23, 20221227
April 20, 20221297
May 12, 20221531
June 5, 20221721
June 29, 20221859
July 23, 20221978
August 14, 20222099
September 6, 20222324
September 30, 20222518
October 22, 20222631
November 14, 20222927
December 6, 20223178
December 29, 20223397
January 20, 20233575
February 13, 20233904
March 7, 20234514
March 30, 20235100
April 22, 20235903
May 14, 20239329
June 10, 202310376
July 3, 202310799
July 25, 202311237
August 17, 202311737
September 8, 202312131
October 1, 202312491
October 24, 202312800
November 15, 202313812
December 8, 202314210
December 30, 202314600
January 22, 202415030
February 13, 202415507
March 7, 202415919
March 29, 202416777
April 21, 202417146
May 14, 202417476
June 5, 202417799
June 28, 202418073
July 20, 202418310
August 12, 202418829
September 8, 202419128
September 30, 202419382
October 23, 202419661
November 15, 202419982
December 7, 202420254
December 30, 202420518
January 21, 202520808
February 13, 202521173
March 7, 202521674
March 30, 202522129
April 21, 202522463
May 14, 202522846
June 6, 202523197
June 28, 202523416
July 21, 202523686
August 12, 202523964
September 4, 202524232
September 26, 202524548
October 24, 202524721
November 15, 202524884
December 12, 202525095
January 4, 202625284
January 27, 202625444
February 18, 202625578
March 13, 202625765
April 5, 202625889
April 28, 202626035
May 20, 202626105
June 21, 202626165
September 15, 202626212
Star history for chroma-core/chroma
DateStars
December 13, 20221
February 14, 2023108
March 1, 2023388
March 17, 2023566
April 1, 2023863
April 16, 20233293
May 2, 20234104
May 17, 20234816
June 1, 20235396
June 17, 20235888
July 5, 20236401
July 21, 20236922
August 5, 20237297
August 20, 20237589
September 5, 20237854
September 20, 20238130
October 5, 20238345
October 21, 20238583
November 5, 20238814
November 20, 20239032
December 6, 20239307
December 21, 20239543
January 6, 20249789
January 21, 202410036
February 5, 202410296
February 21, 202410502
March 7, 202410767
March 22, 202411030
April 7, 202411309
April 22, 202411593
May 11, 202411900
May 26, 202412133
June 10, 202412373
June 26, 202412680
July 11, 202412950
July 26, 202413182
August 11, 202413445
August 26, 202413650
September 10, 202413848
September 26, 202414081
October 11, 202414266
October 27, 202414497
November 11, 202414725
November 26, 202414955
December 12, 202415167
December 27, 202415407
January 11, 202516213
January 27, 202516519
February 11, 202516869
February 26, 202517315
March 17, 202517857
April 1, 202518206
April 17, 202518492
May 2, 202518759
May 17, 202519008
June 2, 202519255
June 17, 202519451
July 2, 202519645
July 18, 202519862
August 2, 202520033
August 18, 202520211
September 2, 202520895
September 17, 202521140
October 3, 202521317
October 24, 202521431
November 8, 202521542
November 24, 202521660
December 9, 202521776
December 24, 202521896
January 9, 202622037
January 27, 202622199
February 12, 202622297
February 28, 202622373
March 15, 202622442
March 31, 202622499
April 15, 202622586
May 1, 202622628
May 21, 202622663
June 20, 202622689
September 16, 202622719
Star history for pgvector/pgvector
DateStars
April 20, 20212
May 12, 2021300
June 21, 2021325
August 19, 2021358
November 25, 2021388
January 31, 2022418
February 27, 2022444
April 20, 2022470
June 10, 2022497
August 9, 2022522
October 8, 2022554
November 4, 2022581
December 5, 2022612
January 5, 2023652
January 28, 2023714
February 18, 2023958
March 9, 20231385
March 27, 20231711
April 15, 20232195
May 4, 20232743
May 22, 20233121
June 10, 20233522
June 29, 20233918
July 17, 20234278
August 5, 20234604
August 24, 20234890
September 11, 20235155
September 30, 20235492
October 19, 20235813
November 6, 20236062
November 29, 20236453
December 17, 20236663
January 5, 20246963
January 24, 20247221
February 11, 20247475
March 1, 20247729
March 20, 20248004
April 7, 20248266
April 26, 20248637
May 15, 20249001
June 2, 20249274
June 21, 20249613
July 10, 20249919
July 28, 202410124
August 16, 202410577
September 4, 202410947
September 22, 202411176
October 11, 202411405
October 30, 202411676
November 17, 202411916
December 10, 202412195
December 28, 202412442
January 16, 202512742
February 4, 202513060
February 22, 202513398
March 13, 202513752
April 1, 202514072
April 19, 202514320
May 8, 202514588
May 27, 202514836
June 14, 202515023
July 3, 202515198
July 22, 202515375
August 9, 202515544
August 28, 202515710
September 16, 202515869
October 4, 202516030
October 29, 202516132
November 17, 202516268
December 5, 202516345
December 29, 202516491
January 16, 202616610
February 4, 202616733
February 24, 202616828
March 14, 202616909
April 3, 202616965
April 22, 202617030
May 13, 202617070
June 15, 202617099
September 16, 202617131
Star history for weaviate/weaviate
DateStars
March 30, 20161
March 2, 201733
December 11, 201765
January 29, 201991
July 11, 2019123
September 21, 2019155
November 21, 2019203
February 4, 2020245
March 18, 2020292
June 18, 2020329
September 2, 2020371
October 30, 2020412
January 12, 2021452
February 24, 2021507
April 8, 2021593
May 7, 20211249
June 13, 20211304
July 11, 20211422
August 13, 20211482
September 13, 20211758
October 15, 20211832
November 26, 20211900
December 25, 20212049
January 23, 20222123
February 20, 20222219
March 20, 20222321
April 18, 20222385
May 19, 20222454
June 23, 20222497
July 22, 20222564
August 29, 20222670
September 24, 20222781
October 24, 20222863
November 24, 20222952
December 24, 20223038
January 20, 20233192
February 15, 20233427
March 14, 20233647
April 10, 20234592
May 6, 20235509
June 2, 20236048
June 28, 20236378
July 25, 20236717
August 21, 20237019
September 16, 20237312
October 13, 20237619
November 8, 20237878
December 5, 20238123
January 1, 20248335
January 27, 20248526
February 28, 20248808
March 26, 20249060
April 21, 20249315
May 18, 20249573
June 13, 20249850
July 10, 202410121
August 6, 202410328
September 1, 202410522
September 28, 202410820
October 24, 202411068
November 20, 202411395
December 17, 202411655
January 12, 202511852
February 8, 202512076
March 6, 202512458
April 2, 202512766
April 28, 202512963
May 25, 202513199
June 21, 202513353
July 17, 202513510
August 18, 202513670
September 14, 202513864
October 15, 202513956
November 12, 202514063
December 13, 202514143
January 8, 202614208
February 8, 202614278
March 8, 202614349
April 16, 202614388
September 15, 202614430

How each series was read

  • milvus-io/milvus

    Historical star data · Covers through September 15, 2026

  • facebookresearch/faiss

    Historical star data · Covers through September 16, 2026

  • qdrant/qdrant

    Historical star data · Covers through September 15, 2026

  • chroma-core/chroma

    Historical star data · Covers through September 16, 2026

  • pgvector/pgvector

    Historical star data · Covers through September 16, 2026

  • weaviate/weaviate

    Historical star data · Covers through September 15, 2026

Ranking

6 repositories

Vector databases ranked by current total GitHub stars
#RepositoryStars+90dFirst starHealth
1milvus-io/milvus46,123~612019debt charts
2facebookresearch/faiss40,914~112017debt charts
3qdrant/qdrant34,578~602020debt charts
4chroma-core/chroma29,316~332022debt charts
5pgvector/pgvector23,029~322021debt charts
6weaviate/weaviate16,815~82016debt 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

Signalmilvus-io/milvusfacebookresearch/faissqdrant/qdrantchroma-core/chromapgvector/pgvectorweaviate/weaviate
GitHub starsCurrent public GitHub metadata total.Best result in this row: 46,12340,91434,57829,31623,02916,815
Stars gained · trailing 90dChange in the newest 90 days covered by each cached series.Best result in this row: +61+11+60+33+32+8
ForksCurrent public GitHub metadata total.Not availableNot 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 packageNo resolved package
Repository ageElapsed years since the GitHub creation timestamp.7.0 years9.6 years6.3 years3.9 years5.4 years10 years

Codebase

Size and technical center of gravity

Signalmilvus-io/milvusfacebookresearch/faissqdrant/qdrantchroma-core/chromapgvector/pgvectorweaviate/weaviate
Dominant languageLargest share of analyzed code lines at current HEAD.Not availableNot availableNot availableNot availableNot availableNot available
Code linesAnalyzed source lines at current HEAD, excluding blanks and comments.Not availableNot availableNot availableNot availableNot availableNot available
Languages representedLanguages with non-zero files or line counts.Not availableNot availableNot availableNot availableNot availableNot available

Maintenance

Commit volume and recent operating cadence

Signalmilvus-io/milvusfacebookresearch/faissqdrant/qdrantchroma-core/chromapgvector/pgvectorweaviate/weaviate
Repository commitsFull repository commit total reported by the analysis.Not availableNot availableNot availableNot availableNot availableNot available
Commits · trailing 90dCommit count in the newest 90 days covered by the repository analysis.Not availableNot availableNot availableNot availableNot availableNot available

Ownership

How broadly maintenance responsibility is distributed

Signalmilvus-io/milvusfacebookresearch/faissqdrant/qdrantchroma-core/chromapgvector/pgvectorweaviate/weaviate
Bus factorFewest analyzed contributors carrying at least half the commits.Not availableNot availableNot availableNot availableNot availableNot available
Top contributor concentrationShare of attributed commits carried by the most active contributor.Not availableNot availableNot availableNot availableNot availableNot available

Change signals

Debt markers and fix pressure in frequently changed files

Signalmilvus-io/milvusfacebookresearch/faissqdrant/qdrantchroma-core/chromapgvector/pgvectorweaviate/weaviate
Fix-labelled share · frequently changed filesFix-labelled commits divided by commits across the analyzed high-frequency file set.Not availableNot 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 availableNot available

Head to head

open in the builder

Frequently asked

Which of these vector databases has the most GitHub stars?

milvus-io/milvus is the most-starred of the vector databases gitdebt compares, with 46,123 GitHub stars as of Sep 2026. It earned its first star in 2019.

Which of these vector databases is growing the fastest?

milvus-io/milvus added the most stars over the last 90 days of its cached history — about 61 new stars. 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