JetBrains/kotlin
The Kotlin Programming Language.
53.5k stars · 6.4k forks · Kotlin
Caution
Caution: no license file.
Why
- GitHub found no license file, so the code is not clearly licensed for reuse. (source 1)
What would change this
- A license file is added.
- Partly checked: maintenance (Commit counts are estimated: the commit sample stops before the window start, so GitHub's totals were scaled by the sampled bot share.; Authors in the last 90 days are counted from the sampled commits only.; Issues are disabled, so response time is not measured.)
Maintenance
PartialActive
- Human commits, 30 days
- 1.6k
- Human commits, 90 days
- 4.3k
- Human commits, 365 days
- 14.5k
- Bot share of commits, 365 days
- 1%
- Last commit
- Oct 14, 2026 (18 hours ago)
- Last human commit
- Oct 14, 2026 (18 hours ago)
- Authors, 90 days
- 75
- Last release
- Oct 8, 2026 (6 days ago)
- Median PR merge time
- 23 hours
Too few recent issues to measure responsiveness.
- Commit counts are estimated: the commit sample stops before the window start, so GitHub's totals were scaled by the sampled bot share.
- Authors in the last 90 days are counted from the sampled commits only.
- Issues are disabled, so response time is not measured.
Sources: Commits, Releases, Merged pull requests, Issues
People
Complete- Owner
- Organization
- Commits sampled
- 496 since Oct 14, 2025
- Authors for half of commits
- 9
- Authors for 80% of commits
- 25
- Contributors
- 291
Top committers
- zhelenskiy: 17% of commits
- ilya-g: 6% of commits
- dimonchik0036: 5% of commits
- vsukharev: 4% of commits
- AYastrebov: 4% of commits
- Shares come from the newest sampled commits, since the commit sample is capped.
Sources: Commits, Contributors
Stars
CompleteMostly organic, confidence high
Bursts
- Jul 15, 2014 to Jul 16, 2014: about 24 more stars than usual, peak 19 in one day, a spike that tapers off. Outside explanation: a Hacker News post.
- Jan 23, 2015 to Jan 23, 2015: about 16 more stars than usual, peak 17 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
- Jan 27, 2015 to Jan 28, 2015: about 26 more stars than usual, peak 15 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
- Sep 28, 2015 to Sep 30, 2015: about 46 more stars than usual, peak 24 in one day, a spike that tapers off. Outside explanation: a jump in forks.
- Feb 15, 2016 to Feb 26, 2016: about 905 more stars than usual, peak 279 in one day, a spike that tapers off. Outside explanation: a jump in forks.
- May 17, 2017 to Jun 12, 2017: about 5.7k more stars than usual, peak 1.4k in one day, a spike that tapers off. Outside explanation: a Hacker News post, a jump in forks.
- Jan 19, 2021 to Jan 21, 2021: about 347 more stars than usual, peak 173 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
- Feb 28, 2021 to Mar 1, 2021: about 256 more stars than usual, peak 228 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
- Jun 27, 2021 to Jul 1, 2021: about 916 more stars than usual, peak 296 in one day, a shape we can't classify. No outside explanation found, so this burst is unexplained.
- Feb 3, 2022 to Feb 4, 2022: about 167 more stars than usual, peak 159 in one day, a spike that tapers off. Outside explanation: a jump in forks.
- Apr 22, 2022 to Apr 23, 2022: about 131 more stars than usual, peak 126 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
- May 21, 2024 to May 24, 2024: about 203 more stars than usual, peak 116 in one day, a shape we can't classify. Outside explanation: a Hacker News post, a jump in issues and pull requests.
- Oct 16, 2024 to Oct 17, 2024: about 95 more stars than usual, peak 85 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
- Nov 9, 2025 to Nov 10, 2025: about 170 more stars than usual, peak 140 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
- Aug 2, 2026 to Aug 2, 2026: about 55 more stars than usual, peak 61 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
- 273 stars on a repo created before February 2013 have no date, so they aren't in the chart.
- 3 stars GitHub has since removed (tracked since Oct 14, 2026).
Anyone can buy stars for any repo; bursts alone don't prove the owner did.
- Some star bursts have no matching forks, issues, releases, or launch coverage.
- Anyone can buy stars for any repo, so this describes the star history only.
- 273 stars on the creation day are undated (before 2013-02-10) and are not counted.
Sources: How star history is analyzed
Risk
CompleteFlags
- Warning: GitHub finds no license for this repository, so default copyright rules apply and no reuse is granted. Details
License
- Now
- No license found
- A year ago
- Not known
Packages
No published packages found.
OpenSSF Scorecard: 4.0 out of 10 (via deps.dev).
Sources: GitHub: JetBrains/kotlin
Badge
Add this to a README to show the current verdict:
[](https://reporadar.ai/JetBrains/kotlin)Earlier verdicts
- Oct 14, 2026: Caution
- Oct 13, 2026: Caution
- Oct 13, 2026: Caution
Computed 17 hours ago · method 2026.10.2