apache/arrow vs pola-rs/polars
apache/arrow
Stars
17,110
First recorded star in 2016.
pola-rs/polars
Stars
39,733
First recorded star in 2020.
apache/arrow: 16,539 stars on September 13, 2026. pola-rs/polars: 35,432 stars on September 15, 2026.
| Date | Stars |
|---|---|
| February 17, 2016 | 65 |
| April 3, 2016 | 499 |
| May 22, 2016 | 582 |
| August 9, 2016 | 653 |
| November 8, 2016 | 720 |
| January 18, 2017 | 793 |
| March 15, 2017 | 873 |
| May 10, 2017 | 959 |
| July 12, 2017 | 1041 |
| September 8, 2017 | 1156 |
| November 3, 2017 | 1403 |
| December 21, 2017 | 1526 |
| February 7, 2018 | 1675 |
| March 25, 2018 | 1826 |
| May 8, 2018 | 2016 |
| June 23, 2018 | 2162 |
| August 8, 2018 | 2346 |
| September 22, 2018 | 2530 |
| November 6, 2018 | 2693 |
| December 20, 2018 | 3004 |
| February 2, 2019 | 3214 |
| March 17, 2019 | 3540 |
| April 29, 2019 | 3826 |
| June 11, 2019 | 4113 |
| July 24, 2019 | 4331 |
| September 4, 2019 | 4555 |
| October 18, 2019 | 4751 |
| December 1, 2019 | 4938 |
| January 15, 2020 | 5106 |
| February 28, 2020 | 5292 |
| April 22, 2020 | 5525 |
| June 4, 2020 | 5749 |
| July 17, 2020 | 5957 |
| September 1, 2020 | 6329 |
| October 13, 2020 | 6548 |
| November 26, 2020 | 6888 |
| January 8, 2021 | 7129 |
| February 20, 2021 | 7515 |
| April 4, 2021 | 7970 |
| May 19, 2021 | 8229 |
| July 1, 2021 | 8415 |
| August 12, 2021 | 8592 |
| September 30, 2021 | 8768 |
| November 19, 2021 | 8934 |
| December 31, 2021 | 9164 |
| February 12, 2022 | 9398 |
| March 27, 2022 | 9620 |
| May 8, 2022 | 9808 |
| June 19, 2022 | 10016 |
| August 1, 2022 | 10267 |
| September 21, 2022 | 10598 |
| November 4, 2022 | 10960 |
| December 16, 2022 | 11158 |
| January 28, 2023 | 11384 |
| March 13, 2023 | 11680 |
| April 24, 2023 | 11968 |
| June 5, 2023 | 12189 |
| July 19, 2023 | 12406 |
| August 30, 2023 | 12749 |
| October 11, 2023 | 12974 |
| November 23, 2023 | 13169 |
| January 5, 2024 | 13367 |
| February 18, 2024 | 13553 |
| April 2, 2024 | 13785 |
| May 15, 2024 | 14027 |
| June 26, 2024 | 14246 |
| August 8, 2024 | 14462 |
| September 20, 2024 | 14735 |
| November 1, 2024 | 14954 |
| December 13, 2024 | 15176 |
| February 2, 2025 | 15410 |
| March 17, 2025 | 15596 |
| April 30, 2025 | 15791 |
| June 15, 2025 | 15990 |
| July 30, 2025 | 16129 |
| September 15, 2025 | 16228 |
| November 15, 2025 | 16331 |
| January 4, 2026 | 16405 |
| March 4, 2026 | 16481 |
| September 13, 2026 | 16539 |
| Date | Stars |
|---|---|
| June 17, 2020 | 1 |
| August 7, 2020 | 159 |
| September 21, 2020 | 228 |
| October 24, 2020 | 294 |
| November 23, 2020 | 410 |
| December 22, 2020 | 538 |
| January 19, 2021 | 626 |
| February 19, 2021 | 679 |
| March 20, 2021 | 1239 |
| April 15, 2021 | 1419 |
| May 19, 2021 | 1634 |
| June 14, 2021 | 1784 |
| July 10, 2021 | 1915 |
| August 6, 2021 | 2037 |
| September 6, 2021 | 2196 |
| October 2, 2021 | 2504 |
| November 6, 2021 | 2637 |
| December 2, 2021 | 2974 |
| December 28, 2021 | 3695 |
| January 23, 2022 | 4121 |
| February 19, 2022 | 4426 |
| March 17, 2022 | 4729 |
| April 12, 2022 | 4967 |
| May 8, 2022 | 5461 |
| June 3, 2022 | 5928 |
| June 29, 2022 | 6271 |
| July 25, 2022 | 6837 |
| August 21, 2022 | 7208 |
| September 16, 2022 | 7575 |
| October 12, 2022 | 8215 |
| November 12, 2022 | 8783 |
| December 8, 2022 | 9251 |
| January 3, 2023 | 10990 |
| January 30, 2023 | 12700 |
| February 25, 2023 | 13908 |
| March 23, 2023 | 15003 |
| April 18, 2023 | 15873 |
| May 14, 2023 | 16436 |
| June 9, 2023 | 17040 |
| July 5, 2023 | 17671 |
| August 1, 2023 | 18255 |
| August 27, 2023 | 19108 |
| September 22, 2023 | 19695 |
| October 18, 2023 | 20274 |
| November 13, 2023 | 20842 |
| December 9, 2023 | 21409 |
| January 4, 2024 | 22057 |
| January 31, 2024 | 23262 |
| February 26, 2024 | 23816 |
| March 23, 2024 | 24584 |
| April 23, 2024 | 25430 |
| May 19, 2024 | 25968 |
| June 14, 2024 | 26492 |
| July 11, 2024 | 27315 |
| August 6, 2024 | 27820 |
| September 1, 2024 | 28379 |
| September 27, 2024 | 28888 |
| October 23, 2024 | 29378 |
| November 18, 2024 | 29870 |
| December 14, 2024 | 30339 |
| January 10, 2025 | 30791 |
| February 5, 2025 | 31210 |
| March 3, 2025 | 31652 |
| March 29, 2025 | 32183 |
| April 24, 2025 | 32706 |
| May 20, 2025 | 33141 |
| June 15, 2025 | 33355 |
| July 12, 2025 | 33602 |
| August 7, 2025 | 33875 |
| September 2, 2025 | 34157 |
| October 3, 2025 | 34391 |
| November 4, 2025 | 34537 |
| December 1, 2025 | 34700 |
| December 27, 2025 | 34856 |
| January 22, 2026 | 35021 |
| February 17, 2026 | 35148 |
| March 16, 2026 | 35229 |
| April 16, 2026 | 35328 |
| May 20, 2026 | 35388 |
| September 15, 2026 | 35432 |
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
| Signal | apache/arrow | pola-rs/polars |
|---|---|---|
| GitHub starsCurrent public GitHub metadata total. | 17,110 | Best result in this row: 39,733 |
| Stars gained · trailing 90dChange in the newest 90 days covered by each cached series. | +23 | Best result in this row: +28 |
| ForksCurrent public GitHub metadata total. | Not available | Not available |
| Largest package audienceLargest resolved registry total; sources are shown explicitly. | No resolved package | No resolved package |
| Repository ageElapsed years since the GitHub creation timestamp. | 11 years | 6.3 years |
Codebase
Size and technical center of gravity
| Signal | apache/arrow | pola-rs/polars |
|---|---|---|
| Dominant languageLargest share of analyzed code lines at current HEAD. | Not available | Not available |
| Code linesAnalyzed source lines at current HEAD, excluding blanks and comments. | Not available | Not available |
| Languages representedLanguages with non-zero files or line counts. | Not available | Not available |
Maintenance
Commit volume and recent operating cadence
| Signal | apache/arrow | pola-rs/polars |
|---|---|---|
| Repository commitsFull repository commit total reported by the analysis. | Not available | Not available |
| Commits · trailing 90dCommit count in the newest 90 days covered by the repository analysis. | Not available | Not available |
Ownership
How broadly maintenance responsibility is distributed
| Signal | apache/arrow | pola-rs/polars |
|---|---|---|
| Bus factorFewest analyzed contributors carrying at least half the commits. | Not available | Not available |
| Top contributor concentrationShare of attributed commits carried by the most active contributor. | Not available | Not available |
Change signals
Debt markers and fix pressure in frequently changed files
| Signal | apache/arrow | pola-rs/polars |
|---|---|---|
| Fix-labelled share · frequently changed filesFix-labelled commits divided by commits across the analyzed high-frequency file set. | Not available | Not available |
| Recent TODO/FIXME movementLatest cumulative marker count and its change over the trailing 90 days. | Not available | Not available |
Both curves are drawn on shared axes. They are not drawn from a shared source: each series names its own below.
One axis, two sources
The overlay puts both repositories on one axis. It does not put them on one source: since July 2026 a stargazer-list series stops on a fixed date, while a series rebuilt from public archive events keeps receiving points. Each column below states its own reading.
| Field | apache/arrow | pola-rs/polars |
|---|---|---|
| Source | Historical star data | Historical star data |
| Coverage | Covers through September 13, 2026 | Covers through September 15, 2026 |
| State | Still updating | Still updating |
No row states how much of a history is missing. An archive series records star actions and not unstars, so it can exceed a repository's own star total, and a figure for the difference would be wrong exactly where it looks most precise.
Notes on this comparison
Which has more GitHub stars, apache/arrow or pola-rs/polars?
GitHub reports 39,733 stars for pola-rs/polars and 17,110 for apache/arrow.
Do both star histories cover the same period?
Not necessarily, and each chart names its own. apache/arrow — Historical star data · Covers through September 13, 2026 · Still updating. pola-rs/polars — Historical star data · Covers through September 15, 2026 · Still updating. Since July 2026 GitHub serves a repository's stargazer list only to its own admins and collaborators, so one series can stop on a fixed date while the other keeps flowing from public archive events.
How is this comparison computed?
Star totals come from public repository metadata. The two curves are each repository's stored star series drawn on shared axes, from whichever source is named above. Repository-health figures are computed independently from each project's commit history.