Public recordModerate
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-09 22:16 UTC
averbraeck / djutils
Delft Java Utilities for statistics, stochastics, data analysis and serialization
averbraeck/djutils holds a health index of 53 out of 100, placing it in the Moderate band. It scores highest on Engineering Quality (66/100) and lowest on Community & Adoption (24/100). It was last updated 53 days ago. A single contributor accounts for most of its recent work.
53
overall / 100Software health index
Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.
53
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
Score profile
Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.
The weighted overall 52 is calibrated to 53 on the published index scale (record calibration 2026-08-02).
Ownership
Alexander VerbraeckPersonal account
16 followers47 public repossince Aug 2015TU Delft
This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish |
|---|---|---|---|---|---|
| Maven | org.djutils:djutils-cli | 2.4.2 | - | 22 | 314 days ago |
| Maven | org.djutils:djutils-data | 2.4.2 | - | 22 | 314 days ago |
| Maven | org.djutils:djutils-draw | 2.4.2 | - | 22 | 314 days ago |
| Maven | org.djutils:djutils-eval | 2.4.2 | - | 10 | 314 days ago |
| Maven | org.djutils:djutils-math | 2.4.2 | - | 5 | 314 days ago |
| Maven | org.djutils:djutils-stats | 2.4.2 | - | 22 | 314 days ago |
| Maven | org.djutils:djutils-swing | 2.4.2 | - | 5 | 314 days ago |
| Maven | org.djutils:djutils-serialization | 2.4.2 | - | 22 | 314 days ago |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
59
Development activity
52Moderate
How it's scored
| 18/36 | Push recency — last push 53 days ago |
| 7.6/36 | Commit cadence — 11/52 weeks with commits |
| 18/18 | Commit volume — 292 commits in the last year |
| 8/10 | OpenSSF Scorecard: Maintained — 5 commit(s) and 5 issue activity found in the last 90 days -- score normalized to 8 |
Inputs used
| commits_last_year | 292 |
| human_commit_share | 1 |
| days_since_last_push | 53 |
| active_weeks_last_year | 11 |
Release discipline
70Good
How it's scored
| 27/27 | Ships releases — 22 releases published |
| 16.2/36 | Release recency — latest release 314 days ago |
| 19.8/27 | Release cadence — a release every ~86 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 22 |
| latest_release_tag | v2.4.2 |
| releases_from_tags | no |
| days_since_latest_release | 314 |
| mean_days_between_releases | 86 |
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.
Community & Adoption
Does the project have users, downloads, attention, and a welcoming setup for contributors?
24
Popularity & adoption
1Critical
How it's scored
| 0/60 | Stars — 0 stars |
| 0/25 | Forks — 1 forks |
| 0/15 | Watchers — 2 watchers |
Inputs used
| forks | 1 |
| stars | 0 |
| watchers | 2 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
50Moderate
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (BSD-3-Clause) |
| 0/18 | CONTRIBUTING guide |
| 0/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| readme_badges | 0 |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | no |
| readme_badge_services | — |
| has_pull_request_template | no |
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
55
Maintainer resilience (bus factor)
24At Risk
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 5/22.5 | Commit distribution — top contributor authored 78% of commits |
| 4.1/13.5 | Contributor breadth — 3 contributors |
| 6/10 | OpenSSF Scorecard: Contributors — project has 2 contributing companies or organizations -- score normalized to 6 |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 3 |
| top_contributor_share | 0.778 |
How it's scored
| 36.8/42 | Issue resolution — 88% of issues closed |
| 0/30 | PR acceptance — no decided pull requests or no data |
| 0/13 | Newcomer PR acceptance — no first-time contributor's PR decided in 30d |
| 0/15 | OpenSSF Scorecard: Code-Review — Found 0/30 approved changesets -- score normalized to 0 |
Inputs used
| merged_prs | 0 |
| open_issues | 21 |
| closed_issues | 149 |
| prs_merged_7d | 0 |
| prs_decided_7d | 0 |
| prs_merged_30d | 0 |
| prs_decided_30d | 0 |
| issue_closed_ratio | 0.876 |
| closed_unmerged_prs | 0 |
| first_time_authors_30d | 0 |
| first_time_prs_merged_30d | 0 |
| first_time_prs_decided_30d | 0 |
Excluded from scoring (no data or not applicable): PR acceptance, Newcomer PR acceptance. Remaining weights renormalized.
Ownership & stewardship
54Moderate
How it's scored
| 10/30 | Ownership backing — personal (user) account |
| 0/20 | Verified domain — not applicable to user accounts |
| 8.8/25 | Owner reach — 16 followers of averbraeck |
| 24.2/25 | Track record — 47 public repos, account ~11 yr old |
Inputs used
| followers | 16 |
| owner_type | User |
| is_verified | — |
| owner_login | averbraeck |
| public_repos | 47 |
| account_age_days | 4,045 |
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
Package maintenance
91Excellent
How it's scored
| 25/25 | Published & resolvable — 8 package(s) on maven |
| 26/35 | Publish recency — latest publish 314 days ago |
| 20/20 | Version history — 22 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | org.djutils:djutils-cli, org.djutils:djutils-data, org.djutils:djutils-draw, org.djutils:djutils-eval, org.djutils:djutils-math, org.djutils:djutils-stats, org.djutils:djutils-swing, org.djutils:djutils-serialization |
| ecosystems | maven |
| any_deprecated | no |
| min_days_since_publish | 314 |
Engineering Quality
Are baseline engineering and documentation practices in place?
66
Engineering practices
60Moderate
How it's scored
| 24/24 | CI workflows — 1 workflow(s) |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 0/20 | OpenSSF Scorecard: CI-Tests — no data |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | no |
| has_precommit_config | no |
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: CI-Tests. Remaining weights renormalized.
Documentation
75Good
How it's scored
| 30/30 | README |
| 25/25 | Documentation directory |
| 0/15 | Documentation / homepage site |
| 10/10 | Repository description |
| 0/10 | Topics |
| 10/10 | Wiki |
Inputs used
| topics | — |
| has_wiki | yes |
| homepage | — |
| docs_site | — |
| has_readme | yes |
| has_docs_dir | yes |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
53
Security posture
45Weak
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — branch protection not enabled on development/release branches |
| 0/2.5 | CI-Tests — no data |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 0/7.5 | Code-Review — Found 0/30 approved changesets -- score normalized to 0 |
| 1.5/2.5 | Contributors — project has 2 contributing companies or organizations -- score normalized to 6 |
| 10/10 | Dangerous-Workflow — no dangerous workflow patterns detected |
| 0/7.5 | Dependency-Update-Tool — no update tool detected |
| 0/5 | Fuzzing — project is not fuzzed |
| 2.5/2.5 | License — license file detected |
| 6/7.5 | Maintained — 5 commit(s) and 5 issue activity found in the last 90 days -- score normalized to 8 |
| 5/5 | Packaging — packaging workflow detected |
| 0/5 | Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
| 0/5 | SAST — no SAST tool detected |
| 0/5 | Security-Policy — security policy file not detected |
| 0/7.5 | Signed-Releases — no data |
| 6.8/7.5 | Token-Permissions — detected GitHub workflow tokens with excessive permissions |
| 3/7.5 | Vulnerabilities — 6 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 16 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 2 |
| scorecard_aggregate | 4.4 |
Excluded from scoring (no data or not applicable): CI-Tests, Signed-Releases. Remaining weights renormalized.
Dependency advisories
86Excellent
How it's scored
| 35/35 | Direct dependencies free of known advisories — no direct dependency carries a known advisory |
| 15.4/25 | Indirect dependencies free of known advisories — 1 affected: ch.qos.logback:logback-core 1.5.18 (moderate 4.8) |
| 35.7/40 | No advisories left outstanding — 1 advisory-carrying package(s) unaddressed past 90 days; oldest published 343 days ago |
Inputs used
| source | osv |
| advisories | 4 |
| affected_packages | 1 |
| assessed_packages | 7 |
| unassessed_packages | 0 |
| affected_by_severity | moderate 1 |
| direct_affected_packages | 0 |
Matched the maven:org.djutils:djutils-cli@2.4.2 runtime dependency closure — what installing the published package pulls in — 7 packages. Reachability is not analyzed.
AI Readiness
How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.
53
Agent context & guidance
40Weak
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 40/40 | Legible commit history — 98 of 100 human commits state their intent (structured subject or explanatory body) |
Inputs used
| has_llms_txt | no |
| llms_txt_url | — |
| legible_history_share | 0.98 |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
How it's scored
| 12.6/18 | One-command bootstrap — djutils-cli/pom.xml, djutils-data/pom.xml, djutils-draw/pom.xml (toolchain convention, no task runner) |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — Java (statically typed) |
| 0/10 | Reproducible environment |
| 0/10 | Demonstrated agent practice — no agent-authored commits among the last 100 |
| 0/8 | Automated maintenance — no automated dependency updates observed |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | no |
| typed_language | yes |
| bootstrap_files | — |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | 0 |
| toolchain_manifests | djutils-cli/pom.xml, djutils-data/pom.xml, djutils-draw/pom.xml, djutils-eval/pom.xml, djutils-math/pom.xml, djutils-serialization/pom.xml, djutils-stats/pom.xml, djutils-swing/pom.xml, pom.xml |
| dependency_bot_commit_share | 0 |
Code legibility for models
99Exceptional
How it's scored
| 45/45 | Type-checkable code — Java (statically typed) |
| 53.6/55 | Manageable file sizes — 8/309 source files over 60KB |
Inputs used
| primary_language | Java |
| largest_source_bytes | 1,173,007 |
| source_files_sampled | 309 |
| oversized_source_files | 8 |
Key facts
0GitHub stars
3contributors
292commits, last 12 months
53days since last push
22releases
1bus factor
21open issues
Maven, PyPIpackage ecosystems
More detail
OpenSSF Scorecard 4.4 / 10
4.4aggregate
Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).
| 10 | Binary-Artifacts | no binaries found in the repo |
| 0 | Branch-Protection | branch protection not enabled on development/release branches |
| n/a | CI-Tests | no pull request found |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 0 | Code-Review | Found 0/30 approved changesets -- score normalized to 0 |
| 6 | Contributors | project has 2 contributing companies or organizations -- score normalized to 6 |
| 10 | Dangerous-Workflow | no dangerous workflow patterns detected |
| 0 | Dependency-Update-Tool | no update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 10 | License | license file detected |
| 8 | Maintained | 5 commit(s) and 5 issue activity found in the last 90 days -- score normalized to 8 |
| 10 | Packaging | packaging workflow detected |
| 0 | Pinned-Dependencies | dependency not pinned by hash detected -- score normalized to 0 |
| 0 | SAST | no SAST tool detected |
| 0 | Security-Policy | security policy file not detected |
| n/a | Signed-Releases | no releases found |
| 9 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 4 | Vulnerabilities | 6 existing vulnerabilities detected |
Direct dependencies 32
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| Maven | org.djunits:djunits | — | djutils-cli/pom.xml |
| Maven | info.picocli:picocli | — | djutils-cli/pom.xml |
| Maven | jakarta.annotation:jakarta.annotation-api | — | djutils-cli/pom.xml |
| Maven | org.djunits:djunits | — | djutils-data/pom.xml |
| Maven | de.siegmar:fastcsv | — | djutils-data/pom.xml |
| Maven | com.google.code.gson:gson | — | djutils-data/pom.xml |
| Maven | jakarta.annotation:jakarta.annotation-api | — | djutils-data/pom.xml |
| Maven | org.djutils:djutils-math | — | djutils-draw/pom.xml |
| Maven | org.djunits:djunits | — | djutils-eval/pom.xml |
| Maven | jakarta.annotation:jakarta.annotation-api | — | djutils-math/pom.xml |
| Maven | org.djunits:djunits | — | djutils-serialization/pom.xml |
| Maven | jakarta.annotation:jakarta.annotation-api | — | djutils-serialization/pom.xml |
| Maven | jakarta.annotation:jakarta.annotation-api | — | djutils-stats/pom.xml |
| Maven | com.tdunning:t-digest | — | djutils-stats/pom.xml |
| Maven | com.google.guava:guava | — | djutils-stats/pom.xml |
| Maven | jakarta.annotation:jakarta.annotation-api | — | djutils-swing/pom.xml |
| Maven | org.djutils:djutils-base | ${djutils-base.version} | pom.xml |
| Maven | org.djutils:djutils-draw | ${djutils.version} | pom.xml |
| Maven | org.djutils:djutils-cli | ${djutils.version} | pom.xml |
| Maven | org.djutils:djutils-data | ${djutils.version} | pom.xml |
| Maven | org.djutils:djutils-math | ${djutils.version} | pom.xml |
| Maven | org.djutils:djutils-serialization | ${djutils.version} | pom.xml |
| Maven | org.djutils:djutils-stats | ${djutils.version} | pom.xml |
| Maven | org.djutils:djutils-swing | ${djutils.version} | pom.xml |
| Maven | org.djunits:djunits | ${djunits.version} | pom.xml |
| Maven | info.picocli:picocli | ${picocli.version} | pom.xml |
| Maven | jakarta.annotation:jakarta.annotation-api | ${jakarta.annotation.version} | pom.xml |
| Maven | de.siegmar:fastcsv | ${fastcsv.version} | pom.xml |
| Maven | com.google.code.gson:gson | ${gson.version} | pom.xml |
| Maven | com.tdunning:t-digest | ${tdigest.version} | pom.xml |
| Maven | com.google.guava:guava | 33.4.0-jre | pom.xml |
| Maven | com.puppycrawl.tools:checkstyle | ${checkstyle.version} | pom.xml |
All dependencies 50
Full resolved dependency set from the GitHub dependency graph: 23 direct and 27 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| Maven | com.google.code.gson:gson | — | direct |
| Maven | com.google.code.gson:gson | 2.14.0 | direct |
| Maven | com.google.guava:guava | — | direct |
| Maven | com.google.guava:guava | 33.4.0-jre | direct |
| Maven | com.puppycrawl.tools:checkstyle | 13.5.0 | direct |
| Maven | com.tdunning:t-digest | — | direct |
| Maven | com.tdunning:t-digest | 3.3 | direct |
| Maven | de.siegmar:fastcsv | — | direct |
| Maven | de.siegmar:fastcsv | 2.2.2 | direct |
| Maven | info.picocli:picocli | — | direct |
| Maven | info.picocli:picocli | 4.7.7 | direct |
| Maven | jakarta.annotation:jakarta.annotation-api | — | direct |
| Maven | jakarta.annotation:jakarta.annotation-api | 3.0.0 | direct |
| Maven | org.djunits:djunits | — | direct |
| Maven | org.djunits:djunits | 6.1.0 | direct |
| Maven | org.djutils:djutils-base | 2.4.2 | direct |
| Maven | org.djutils:djutils-cli | — | direct |
| Maven | org.djutils:djutils-data | — | direct |
| Maven | org.djutils:djutils-draw | — | direct |
| Maven | org.djutils:djutils-math | — | direct |
| Maven | org.djutils:djutils-serialization | — | direct |
| Maven | org.djutils:djutils-stats | — | direct |
| Maven | org.djutils:djutils-swing | — | direct |
| Maven | com.github.caciocavallosilano:cacio-tta | 1.18 | indirect |
| Maven | com.github.spotbugs:spotbugs-maven-plugin | 4.9.8.3 | indirect |
| Maven | org.apache.maven.plugins:maven-checkstyle-plugin | 3.6.0 | indirect |
| Maven | org.apache.maven.plugins:maven-compiler-plugin | 3.15.0 | indirect |
| Maven | org.apache.maven.plugins:maven-failsafe-plugin | 3.5.6 | indirect |
| Maven | org.apache.maven.plugins:maven-gpg-plugin | 3.2.7 | indirect |
| Maven | org.apache.maven.plugins:maven-install-plugin | 3.1.4 | indirect |
| Maven | org.apache.maven.plugins:maven-javadoc-plugin | 3.11.2 | indirect |
| Maven | org.apache.maven.plugins:maven-jxr-plugin | 3.6.0 | indirect |
| Maven | org.apache.maven.plugins:maven-pmd-plugin | 3.26.0 | indirect |
| Maven | org.apache.maven.plugins:maven-project-info-reports-plugin | 3.9.0 | indirect |
| Maven | org.apache.maven.plugins:maven-resources-plugin | 3.3.1 | indirect |
| Maven | org.apache.maven.plugins:maven-site-plugin | 3.21.0 | indirect |
| Maven | org.apache.maven.plugins:maven-source-plugin | 3.3.1 | indirect |
| Maven | org.apache.maven.plugins:maven-surefire-plugin | — | indirect |
| Maven | org.apache.maven.plugins:maven-surefire-plugin | 3.5.6 | indirect |
| Maven | org.apache.maven.plugins:maven-surefire-report-plugin | 3.5.6 | indirect |
| Maven | org.codehaus.mojo:flatten-maven-plugin | 1.7.0 | indirect |
| Maven | org.codehaus.mojo:taglist-maven-plugin | 3.2.1 | indirect |
| Maven | org.djutils:djutils-test | 2.4.2 | indirect |
| Maven | org.jacoco:jacoco-maven-plugin | 0.8.14 | indirect |
| Maven | org.junit.jupiter:junit-jupiter-engine | 5.14.4 | indirect |
| Maven | org.sonatype.central:central-publishing-maven-plugin | 0.8.0 | indirect |
| PyPI | mkdocs | — | indirect |
| PyPI | mkdocs-material | — | indirect |
| PyPI | mkdocs-toc-md | — | indirect |
| PyPI | pymdown-extensions | — | indirect |
Dependency advisories 1
Installing maven:org.djutils:djutils-cli@2.4.2 pulls in 7 packages, direct and transitive: 1 carry known advisories, of which 0 are direct dependencies.
| Package | Version | Relation | Severity | Advisories | Fixed in |
|---|---|---|---|---|---|
| ch.qos.logback:logback-core | 1.5.18 | indirect | moderate | 4 | 1.5.34 |
An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.
Raw JSON report machine-readable
Feedback
Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.
Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.
Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.34.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — Maven.