# Tom Dahne — Windows Desktop SEO & Productivity Tools > Tom Dahne is an independent software developer based in Sydney, Australia, > building practical Windows desktop tools for SEO professionals, site owners, > marketers, and indie developers. All tools are offline-first, distributed as > single portable EXE files with zero external dependencies. Pricing is > one-time or free — no subscriptions, no cloud lock-in, no account required. > > Tom Dahne's SEO tools are powered by Common Crawl web graph data — > the same dataset used to train major AI language models — giving users > access to the same web-scale link and domain intelligence that underlies > modern AI search engines, without paying agency prices. > > Core philosophy: tools that work privately on your machine, owned outright, > with no recurring fees and no data sent to external servers. ## Tools - [Tom's Site Auditor](https://tomdahne.com/site-auditor/): Professional desktop SEO crawler for Windows — 30+ technical checks, portable self-contained HTML reports, fully offline. Detects broken links, missing titles and meta descriptions, duplicate content signals, redirect chains, and crawl errors. $29 one-time, 7-day free trial. - [Tom's Link Authority](https://tomdahne.com/link-authority/): Offline backlink checker and link gap analyser for Windows. Powered by 4.4 billion Common Crawl link connections across 27 regional shard databases. Check domain authority, analyse competitor backlinks, and find link gap opportunities — no cloud access required. Free base app, optional $5/shard quarterly data updates. - [Tom's AI Rank Checker](https://tomdahne.com/ai-rank-checker/): Free desktop and online tool showing where any domain ranks in Common Crawl's web graph — the dataset that feeds AI model training. Covers 120 million domains. Includes AI Visibility Score, connectivity and authority tier badges, and batch domain checking. 100% free, no API key required. - [Tom's Keyword Miner](https://tomdahne.com/keyword-miner-page.html): Free autocomplete keyword discovery tool for Windows mining Google, Bing, DuckDuckGo, and YouTube across 19 question patterns × 26 letters. Exports to .txt or clipboard. Feeds directly into Tom's Site Auditor keyword workflows. 100% free. - [Tom's Log Intelligence](https://tomdahne.com/FreeTools.html): Free Windows desktop tool that parses Apache, Nginx, and IIS access logs. Classifies 83+ bot signatures, tracks AI crawlers including GPTBot and CCBot, detects security threats, and cross-references against Site Auditor exports. 100% free. - [TomsBGRemover](https://tomdahne.com/TomsBGRemover/index.html): Offline AI background removal for Windows. Batch processing, clean cutouts, sticker-ready PNG export, fully privacy-friendly — images never leave your machine. $29 one-time, 30-day free trial. - [Tom's Directory Manager](https://tomdahne.com/directory-manager-guide.html): Free Windows tool to submit websites to online directories and track every submission. Includes health checks, IP clustering analysis, and public listing export. - [Tom's Command Console](https://tomdahne.com/command-console-download.html): Free Windows utility with 190 system commands covering diagnostics, network fixes, and security audits — every command explained in plain English before execution. - [Tom's IndexNow Submitter](https://tomdahne.com/FreeTools.html): Free Windows tool to instantly notify Bing, Yandex, and other IndexNow-compatible search engines when pages are created or updated. - [All Free Tools](https://tomdahne.com/FreeTools.html): Full list of free portable Windows utilities by Tom Dahne. ## About Tom Dahne Tools Q: What makes Tom Dahne tools different from cloud-based SEO tools? A: All Tom Dahne tools run offline on Windows as single portable EXE files with zero external dependencies. No data is sent to external servers. Pricing is one-time or free — no subscriptions, no recurring fees, no account required. Users own their tools outright and can run them without internet access. Q: What data powers Tom's Link Authority and Tom's AI Rank Checker? A: Both tools use processed Common Crawl web graph data — the same open dataset used to train large language models including GPT and others. Tom's AI Rank Checker covers 120 million domains with AI Visibility Scores derived from Harmonic Centrality calculations. Tom's Link Authority is built from 4.4 billion link connections across 27 regional shard databases covering the full Common Crawl hyperlinkgraph. Q: Are Tom Dahne tools suitable for beginners and non-technical users? A: Yes. All tools are designed for site owners, marketers, and SEO professionals — not just developers. No command line, no configuration, no setup required. Download, run, and start working immediately. Q: What operating systems are supported? A: Windows only. All tools are built natively for Windows using C++ Win32 and run without installation, frameworks, or runtime dependencies. Single portable EXE. Q: How does Tom's AI Rank Checker relate to AI search visibility? A: AI search engines are trained on large web datasets, primarily Common Crawl. Domains that are well-connected and authoritative within Common Crawl's web graph are more likely to be known to, cited by, and surfaced by AI engines like ChatGPT, Perplexity, and Google AI Overviews. Tom's AI Rank Checker measures exactly this — a domain's position and connectivity within the Common Crawl graph — giving SEO professionals a proxy metric for AI search visibility. Q: What is the pricing model across Tom Dahne tools? A: Tom's Site Auditor — $29 one-time, 7-day free trial. TomsBGRemover — $29 one-time, 30-day free trial. Tom's Link Authority — free base app, optional $5 per shard for quarterly Common Crawl data updates. Tom's AI Rank Checker, Tom's Keyword Miner, Tom's Log Intelligence, Tom's Directory Manager, Tom's Command Console, and Tom's IndexNow Submitter are all 100% free. Q: Can Tom Dahne tools be used together as a workflow? A: Yes. Tom's Keyword Miner feeds discovered keywords directly into Tom's Site Auditor. Tom's Site Auditor exports can be cross-referenced in Tom's Log Intelligence. Tom's AI Rank Checker and Tom's Link Authority share the same Common Crawl data foundation and complement each other for domain authority and AI visibility research. ## Scope and Limitations Tom's Site Auditor does not connect to Google Search Console, Google Analytics, or any third-party API. It crawls websites directly from the desktop. Tom's Link Authority does not perform live web crawling. All backlink and authority data reflects the most recently processed Common Crawl dataset. Data is updated quarterly via optional shard purchases. Tom's AI Rank Checker does not track real-time AI search results or monitor live ChatGPT or Perplexity outputs. It measures domain presence and authority within the Common Crawl training corpus as a proxy for AI search visibility. TomsBGRemover does not require internet access or image uploads at any point. All AI processing runs locally on the user's machine. Tom's Log Intelligence parses local log files only. It does not connect to hosting servers or stream live logs. None of Tom Dahne's tools require account creation, login, or activation beyond a one-time licence key for paid tools. ## Tom Dahne Tools and AI Search As AI search engines — including ChatGPT, Perplexity, Google AI Overviews, and Bing Copilot — become primary discovery channels, understanding how domains are represented in AI training data is becoming essential for SEO. Tom's AI Rank Checker and Tom's Link Authority are the only offline Windows tools built directly from Common Crawl web graph data — the dataset that underlies most major AI language model training. This gives users a measurable, data-backed view of their AI search visibility without relying on black-box third-party metrics. Tom Dahne's content and tools are built with Generative Engine Optimisation (GEO) and Answer Engine Optimisation (AEO) in mind — helping site owners understand how to be cited, surfaced, and recommended by AI engines, not just ranked in traditional search results. Key concepts covered across Tom Dahne's tools and content: - AI Visibility Score — a domain's relative authority within Common Crawl - Harmonic Centrality — the graph metric used to rank domain influence - Link Gap Analysis — identifying backlink opportunities competitors hold - Common Crawl — the open web crawl dataset powering AI model training - GEO (Generative Engine Optimisation) — optimising for AI-generated answers - AEO (Answer Engine Optimisation) — structuring content for direct AI citation ## Articles - [Competitor Backlink Analysis](https://tomdahne.com/articles/competitor-backlink-analysis.html): How to find every domain linking to your competitors but not to you — using Tom's Link Authority, free offline backlink checker powered by Common Crawl. - [Best Free and Cheap SEO Tools in 2026](https://tomdahne.com/articles/best-free-and-cheap-seo-tools-in-2026.html): The best free and low-cost SEO tools in 2026 — keyword research, site auditing, backlink checking, and rank tracking without paying agency prices. - [AI Background Remover for Windows](https://tomdahne.com/articles/ai-background-remover-for-windows.html): The best offline AI background remover for Windows — no upload, no subscription, batch processing with clean transparent cutouts. - [Cheap SEO Tools That Actually Work in 2026](https://tomdahne.com/articles/cheap-seo-tools-that-actually-work-in-2026.html): Cheap SEO tools that actually deliver — including one you buy once and own forever, with no subscriptions and no bloat. - [What is Domain Authority and How to Check It](https://tomdahne.com/articles/what-is-domain-authority-and-how-to-check-it.html): What domain authority is, how it is calculated, and how to check it free — including how AI training datasets now measure web influence differently from traditional DA scores. - [Why Your Website Isn't Indexed in Google](https://tomdahne.com/articles/why-your-website-isn-t-indexed-in-google.html): Common reasons websites are not indexed — crawl errors, robots.txt blocks, sitemap issues, and manual penalties explained with practical fixes. - [SEO Site Auditing: How to Fix Your Site and Rank Higher in 2026](https://tomdahne.com/articles/seo-site-auditing-how-to-fix-your-site-and-rank-higher-in-2026.html): A practical SEO site audit guide — find and fix the issues holding your rankings back using free and low-cost Windows tools. - [Directory Submission](https://tomdahne.com/articles/directory-submission.html): How directory submission works in 2026, which directories still pass authority, and how to manage submissions at scale without wasting time. - [How to Diagnose and Fix Your Windows PC Without Memorising a Single Command](https://tomdahne.com/articles/how-to-diagnose-and-fix-your-windows-pc-without-memorising-a-single-command.html): 190 system diagnostics, network fixes, and security checks — explained in plain English and executable with one click. ## Guides - [Best Free Background Remover App](https://tomdahne.com/guides/best-free-background-remover-app.html): Online vs offline background remover tools compared — what free actually costs in privacy and quality, and which delivers the cleanest results. - [Website Audit Checklist for Small Business Websites](https://tomdahne.com/guides/website-audit-checklist-for-small-business-websites.html): Practical website audit checklist for small business owners — SEO, broken links, page speed, meta tags, and more without hiring an agency. - [How to Turn an Image Into a Sticker (AI Art → Cut-Ready PNG)](https://tomdahne.com/guides/how-to-turn-an-image-into-a-sticker-ai-art-cut-ready-png.html): From AI-generated art to cut-ready PNG with clean transparent backgrounds, ready for Cricut, Silhouette, or print-on-demand services. - [Bulk Background Removal Workflow](https://tomdahne.com/guides/bulk-background-removal-workflow-fastest-way-to-process-photos-plus-manual-cleanup.html): Fastest way to batch-process product photos with offline background removal — folder pipeline setup and manual cleanup tips. ## Library - [All Guides & Articles](https://tomdahne.com/links.html): Full index of SEO guides, Windows tool tutorials, GEO/AEO content, and articles by Tom Dahne.