Industry Context — Common BS Fingerprints in Software, SaaS & Tech Products
SWI-Prolog
(https://swi-prolog.org) 📸 Data Snapshot: June 19, 2026Analyze the raw signals below. How would a machine score this business’s credibility?
Here are the exact signals captured from up to six pages of the site — the same raw inputs the evaluation engine analyzed. They are grouped by signal type so you can weigh each the way the machine does.
🏗️ Semantic Structure — heading hierarchy & page identity (Info Density · Commodity Fingerprint)
HOMEPAGE SWI-Prolog (https://swi-prolog.org)
SWI-Prolog
REPEATED_BODY (https://swi-prolog.org/pldoc/man/)
REPEATED_BODY_FOOTER (https://swi-prolog.org/openid/login/)
BODY SWI-Prolog downloads (https://swi-prolog.org/Download.html)
SWI-Prolog downloads
📝 The Narrative — clean text per page (Info Density · Semantic Coherence)
HOMEPAGE (https://swi-prolog.org) SWI-Prolog
[IMG: SWI-Prolog owl logo] Robust, mature, free. Prolog for the real world. HOME DOWNLOAD SWI-Prolog Sources/building Docker images Add-ons Browse GIT [IMG: External] DOCUMENTATION Manual Packages FAQ Command line PlDoc Bluffers▶ Prolog syntax PceEmacs HTML generation License Publications Rev 7 Extensions TUTORIALS Beginner▶ Getting started Learn Prolog Now! [IMG: External] Simply Logical [IMG: External] Debugger Development tools Advanced▶ Modules [IMG: External] Grammars (DCGs) [IMG: External] clp(fd) [IMG: External] Printing messages [IMG: External] PlDoc [IMG: External] Web applications▶ Web applications [IMG: External] Let's Encrypt! [IMG: External] Pengines Semantic web▶ ClioPatria [IMG: External] RDF namespaces Graphics▶ XPCE GUI options Machine learning▶ Probabilistic Logic Programming [IMG: External] External collections▶ Meta level tutorials [IMG: External] For packagers▶ Linux packages COMMUNITY Forum & mailing list [IMG: External] Blog News Report a bug Submit a patch Submit an add-on Roadmap (on GitHub) [IMG: External] External links Contributing Code of Conduct Contributors SWI-Prolog items COMMERCIAL WIKI Login View changes Sandbox Wiki help All tags SWI-Prolog offers a comprehensive free Prolog environment. Since its start in 1987, SWI-Prolog development has been driven by the needs of real world applications. SWI-Prolog is widely used in research and education as well as commercial applications. Join over a million users who have downloaded SWI-Prolog. more ... Download SWI-Prolog Get Started Try SWI-Prolog online (SWISH) ? Run SWI-Tinker in your browser StarSponsor
SUB-PAGE · THIN (https://swi-prolog.org/pldoc/man/)
SUB-PAGE · THIN (https://swi-prolog.org/openid/login/)
SUB-PAGE (https://swi-prolog.org/Download.html) SWI-Prolog downloads
[IMG: SWI-Prolog owl logo] SWI-Prolog downloads HOME DOWNLOAD SWI-Prolog Sources/building Docker images Add-ons Browse GIT [IMG: External] DOCUMENTATION Manual Packages FAQ Command line PlDoc Bluffers▶ Prolog syntax PceEmacs HTML generation License Publications Rev 7 Extensions TUTORIALS Beginner▶ Getting started Learn Prolog Now! [IMG: External] Simply Logical [IMG: External] Debugger Development tools Advanced▶ Modules [IMG: External] Grammars (DCGs) [IMG: External] clp(fd) [IMG: External] Printing messages [IMG: External] PlDoc [IMG: External] Web applications▶ Web applications [IMG: External] Let's Encrypt! [IMG: External] Pengines Semantic web▶ ClioPatria [IMG: External] RDF namespaces Graphics▶ XPCE GUI options Machine learning▶ Probabilistic Logic Programming [IMG: External] External collections▶ Meta level tutorials [IMG: External] For packagers▶ Linux packages COMMUNITY Forum & mailing list [IMG: External] Blog News Report a bug Submit a patch Submit an add-on Roadmap (on GitHub) [IMG: External] External links Contributing Code of Conduct Contributors SWI-Prolog items COMMERCIAL WIKI Login Edit this page View changes Sandbox Wiki help All tags Development release [IMG: star.gif] Stable release Daily builds for Windows Browse GIT repository [H2] Available download channels The development version is released roughly every two to four weeks. It is typically robust, provides the latest features and possible issues are resolved quickly. This is the recommended version for most users. The stable release is infrequently updated. After an update, the stable version receives only critical patches that are extremely unlikely to break source or binary compatibility. The stable versions are intended for deploying systems or other use cases that require a fully predictable installation. The daily releases for Windows allow users of the Windows version to get access to the latest features or bug fixes. Users of other platforms that want or need to stay this close to the daily development are requested to use the GIT sources. The GIT repository swipl-devel.git provides up-to-date access to the sources. Using the GIT repository is recommended if you want to stay up to date and expecially if you plan to develop C/C++ resources for SWI-Prolog. See the build instructions. [H2] Announcements and get the "latest" version New releases are announced on Discourse. Scripts that wish information on the latest version can run an HTTP GET on https://github.com/SWI-Prolog/download/devel/swipl-latest.tar.gz (development channel) or https://github.com/SWI-Prolog/download/stable/swipl-latest.tar.gz (stable channel). These URLs reply with an HTTP redirect to the latest release tar archives. [H2] Read more about Available SWI-Prolog versions Information on Linux packages and building on Linux
🛡️ Trust Signals — reviews, proof links, trust-theatre flag (Trust & Proof)
| Page | Reviews | Proof links |
|---|---|---|
| / (home) | 0 | 0 |
| /pldoc/man/ | 0 | 0 |
| /openid/login/ | 0 | 0 |
| /Download.html | 0 | 0 |
🔗 Identity & Technical Layer — schema JSON-LD: identity chains, entity gaps (Identity & Authority)
Your Diagnosis
Before revealing the machine’s verdict, predict the BS score for each signal. Higher = more BS (more fluff, less verifiable substance). Drag each slider, then submit to compare your judgment against the engine.
Stuck? Reveal the heuristic lens — how the deterministic page-auditor reads each signal (no AI, pure pattern rules)
These are the structural rules a local, deterministic auditor applies — the same lens you can use to judge each signal. They describe what to look for, not this company’s result.
Classify each sentence as substantive or hollow. Grounding markers — numbers, currencies, dates, technical units, named entities — outweigh marketing adjectives. When fluff sits right next to hard evidence, the fluff is forgiven.
Pull the main entities out of the H1, then check whether they actually recur through the body. A page that announces one thing and then talks about another drifts. Headings with no real sentences underneath read as pseudo-substance.
Count trust words (review, testimonial, rating, verified) against real outbound proof links (Google, Trustpilot, Clutch, G2, Yelp). Lots of trust language with zero verification links is trust theatre. Unlinked logo galleries count against it.
Look at how much sentence length varies. Natural writing varies its rhythm; templated or mass-produced copy is statistically uniform. Very low variation reads as commodity content — unless unique named entities break the pattern.
Inspect the JSON-LD. Is there an Organization or Person schema, and does it carry sameAs links to real external profiles (LinkedIn, socials)? Missing schema or no identity declaration signals an anonymous entity.
Want to apply this lens yourself? The free BS Indicator Chrome extension runs these heuristic checks live on any page. Bear in mind it is a single-page, deterministic tool — it relies only on pattern rules for the page in front of it and does not perform the cross-page semantic correlation this audit uses, so its readout is a starting lens, not the full verdict.
Based on 1129 businesses audited.
SWI-Prolog has 24.1 points less BS than the average for Software, SaaS & Tech Products.
Software, SaaS & Tech Products BS: SWI-Prolog (swi-prolog.org)
SWI-Prolog is a rare example of a high-substance, zero-bullshit technical resource. Its low score is only slightly elevated by an antiquated technical SEO structure and a lack of structured identity data. It is a tool-first site that prioritizes utility for its million users over marketing conversion.
Implement a clear H1 tag on the homepage that explicitly identifies the software and its primary utility. Add JSON-LD Organization schema to the homepage to formally link the project to its contributors and GitHub repository. Populate meta-descriptions for all pages to reflect the high-quality technical content found within. Create a dedicated section for commercial use cases with named entities to further substantiate the real world applications claim.
The site perfectly aligns with the software and tech development industry, specifically targeting a developer and research-oriented audience. The content is focused entirely on the Prolog programming language environment, offering source code, binaries, and extensive technical documentation.
“The score of 9 is driven primarily by the Identity and Authority pillar due to a lack of modern technical SEO elements (missing H1, no schema). All other pillars scored near zero because the site is purely functional and devoid of industry-standard marketing fluff or unsubstantiated claims. The absence of semantic drift and trust theatre makes it a benchmark for high-integrity technical communication.”
This training module utilizes a snapshot of public data from SWI-Prolog, captured on June 19, 2026, to demonstrate how machine logic evaluates different types of business narratives.
Purpose: This data is presented under “Fair Use” / “Educational Exception” for the purpose of forensic semantic analysis, allowing users to compare human intuition against machine-generated evaluations.
Notice to SWI-Prolog: This analysis is part of a non-adversarial audit conducted by 1 Euro SEO. The results provided by 1EuroSEO are intended as professional feedback to help improve any website’s machine-readability and authority signals. The 1EuroSEO BS Detection Tool is a free tool, and anyone can test any company to see how their content is interpreted by AI models.
Any company can use the insights for free and improve its voice by comparing it to industry clichés or competitors. When a company has updated its content, it can always submit a new audit request, which will be reflected in a new current score.
To all users: You are encouraged to visit the live site at https://swi-prolog.org to view the most current version of its content and learn from the source what this company is about and what it offers.