v2.0.1 ↓ Download
Free & Open Source · v2.0.1

Structural
Equation
Modeling

A free, open-source desktop app for PLS-SEM, CB-SEM, and fsQCA. Visual drag-and-drop model builder, APA 7th edition reporting, bootstrapping, and multi-group analysis. No license fees, no paywalls — ever.

21 API endpoints
174+ tests
v1.0 schema-stable
CC BY-NC-ND 4.0
NAVAL·SEM — v2.0.1
Model Builder
Analyse
Results
Report
NAVAL·SEM Model Builder Canvas — drag-and-drop SEM canvas

Recognition
SourceForge Rising Star Award (2026)
NAVAL-SEM has been recognized by SourceForge as a Rising Star open-source project for community engagement and adoption milestones.
Capabilities

Everything you need for SEM — and fsQCA

⬡
Visual Model Builder
Drag-and-drop canvas that auto-generates lavaan syntax. Undo/redo, PNG export, live canvas sync with the syntax editor.
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PLS-SEM & CB-SEM
Full support for Partial Least Squares and Covariance-Based SEM (ML), plus WLS. Algorithm selector with bootstrap N control.
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Measurement Validity
AVE, CR, Cronbach's α, Fornell-Larcker, HTMT, CVI, EFA, Nomological Validity, and Measurement Invariance (MICOM).
⤢
Robustness Methods
FIMIX-PLS segmentation, PLS-POS, Gaussian Copula endogeneity correction, NCA-ESSE sensitivity extension.
◈
fsQCA Engine NEW v1.0
fuzzy-set QCA with calibration, necessity analysis, truth table, and Quine-McCluskey Boolean minimisation. Complex, parsimonious, and intermediate solutions.
≡
APA 7 Reporting NEW v1.0
Export submission-ready Word (.docx) tables: measurement model, discriminant validity, structural paths, and indirect effects — all APA 7th edition formatted.
⊕
Multi-Group Analysis
HOC (Higher-Order Constructs), MICOM measurement invariance, and MGA engine for comparing structural paths across groups.
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Conditional Process
Moderation, IPMA, NCA, and conditional process analysis (Hayes PROCESS Models 7, 14, 58/59) with bootstrapped indirect effects.
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Export & Distribution
Export R/lavaan, Python/semopy, JASP code. PDF and APA Word reports. Available via SourceForge, Zenodo DOI, Microsoft Store, and AlternativeTo.
◆
Fingerprint & Provenance NEW v2.0
Every analysis result and export now carries a local SHA-256 reproducibility fingerprint, with an optional free Bitcoin timestamp (via OpenTimestamps) for results you plan to cite — no wallet, no mining, no data ever leaving your machine unless you opt in.

Latest Release
v2.0.1
Schema-stable · v1.0 line
Fingerprint & Provenance, Bitcoin Timestamping, Packaging Fix
Released 22 August 2026
Fingerprint on Every Endpoint Bitcoin Timestamping (OpenTimestamps) Packaged-Build Timestamping Fix ⚠ /nomological Response Shape

All Releases
VersionDateHighlightsNotes
v2.0.1 22 Aug 2026 Fixed Bitcoin timestamping failing to initialize in packaged (PyInstaller) builds What's New →
v2.0.0 22 Aug 2026 Fingerprint & provenance extended to every result-producing endpoint; optional Bitcoin timestamping (OpenTimestamps); ⚠ breaking change to POST /nomological response shape What's New →
v1.1.11 15 Aug 2026 macOS build script (build_macos.sh) and CI packaging; fixed HOC guidance never reaching the user on a failed Main Run What's New →
v1.1.9 11 Aug 2026 HOC syntax auto-detection with guidance to the HOC tab; Downloads tab relabeled "Outputs" What's New →
v1.1.8 7 Aug 2026 General UI improvements What's New →
v1.1.6 7 Aug 2026 Fixed dataset column pills not scrolling horizontally (Model, MGA, and HOC tabs) What's New →
v1.1.5 2 Aug 2026 Report export now rebuilds the diagram from the live theme before capture, fixing stale-theme exports What's New →
v1.1.4 2 Aug 2026 Fixed HOC diagram auto-layout (constructs stacking into one column) and hardcoded dark export background What's New →
v1.1.3 1 Aug 2026 Formative (Mode B) PLS-SEM support via the <~ operator; bootstrap SE/CI back-fill fix for HOC measurement loadings What's New →
v1.1.2 1 Aug 2026 HOC bootstrap significance back-fill and second-order diagram rendering fix What's New →
v1.1.1 7 Jul 2026 Fixed pywebview startup and the Builder arrow tool What's New →
v1.1.0 5 Jul 2026 Pinned mpmath to resolve a sympy dependency conflict What's New →
v1.0.0LTS 27 Jun 2026 fsQCA (Quine-McCluskey), APA 7th edition Word export, Schema freeze, 174+ tests What's New →
v0.9.2 25 Jun 2026 Playwright UI test suite merged; CI stability fixes Changelog →
v0.9.0 22 Jun 2026 CVI, EFA, Nomological validity, Measurement invariance (MICOM), NCA-ESSE What's New →
v0.8.0 14 Jun 2026 FIMIX-PLS segmentation, PLS-POS, Gaussian Copula endogeneity correction, PDF report export What's New →
v0.7.1 8 Jun 2026 Moderation, IPMA, NCA, Conditional Process Analysis (Hayes PROCESS) What's New →
v0.6.2 3 Jun 2026 Syntax → Builder fix, structural path order Changelog →
v0.6.0 2 Jun 2026 Higher-Order Constructs, MICOM, Multi-Group Analysis Changelog →
v0.5.0 25 May 2026 Predictive Relevance, Q², PLSpredict, CVPAT, CMB Changelog →
v0.4.1 22 May 2026 VIF, Cohen's f², indirect effects, Effects tab Changelog →
v0.2.0 7 May 2026 Initial public release — visual builder, PLS/CB-SEM, HTMT Changelog →