Solo dev • Founder • 31+ years in IT • Privacy advocate • Homelab & Cloudflare builder • Shipping small, single-file, privacy-first tools

• File Viewer family — 15 fast, single-file, offline viewers: PDF, Word, Excel/ODS, PowerPoint, Publisher, EPUB, Markdown, HTML, data (JSON/YAML/CSV/XML/TOML), logs, .eml email, X.509 certificates, images (down to TIFF, QOI & farbfeld), audio, and video. No build step, nothing uploaded — ever. Repos: file-viewer.us is the hub; each viewer lives in its own repo (pdf · docx · sheets · image · cert · …)

• TextWizard — browser-local text & code tools: case converters, diff, analyzers, and more. MIT, zero dependencies, nothing leaves the tab. Repo: textwizard-tools

• Wizard apps & extensions — ResizeWizard (anchored browser-window resizing, live on the Chrome Web Store), CopyWizard (smart form mapper — copy form fields across sites with reusable profiles), UploadWizard (white-label client file-upload SaaS: multi-tenant Astro SSR, custom domains, passwordless auth), and BookmarkWizard (free-forever bookmark manager; Pro adds editing at $3/yr). In development: CaptureWizard (screenshot capture), MarkdownWizard (Markdown editor/exporter), and PunctuationWizard (browser-local punctuation & typography tools). Free + Pro tiers via Stripe. Repos: MarkdownWizard's OSS tools live in markdownwizard-tools; PunctuationWizard's in punctuationwizard-tools

• IP Cow — privacy-first IP, DNS & email diagnostics, running since 2005. Rebuilt in 2026 as an Astro site + API on dedicated Hetzner hosts, with separate IPv4-only and IPv6-only probe endpoints. The reusable core is MIT: ipcow.com-tools (@ipcow/tools-core + ipcow-probe).

• MyKK — a single-file browser start page with 10+ widgets (weather, stocks, RSS, calendar, bookmarks, ambient sounds, more). Vanilla JS, zero deps, Pro tier via Chrome extension + Stripe. Joined by app.favoritespage.us, a KV-backed speed-dial on Cloudflare Workers — free forever, with cross-device sync as Favorites Pro ($3/yr, 30-day trial) sold at favoritespage.us via Stripe + a better-auth license portal. Repos: mykk.us-dashboard · mykk.us · favoritespage-app

• tgwab-web — pnpm + Astro 7 monorepo powering the identity fleet (hub, blog, dev portfolio, family, ham radio) from one shared design system (@tgwab/design-tokens + @tgwab/ui). Cloudflare Pages, no Google Fonts.

• The estate — the ops layer behind all of the above: Cloudflare Workers and scheduled jobs for job-liveness alerting, uptime probes, notification relay (Discord + email, DMARC/TLS-RPT ingestion), and transactional mail, governed by a shared standards repo. Mostly private by design; the mail Worker is public: mailer.

Languages

Frameworks & Site Generators

Platforms & Infrastructure

Services & APIs

Tools

• de-google.us — a plain-English guide to limiting Big Tech without blowing up your life. Astro 7 + Tailwind 4 + Pagefind.

• tomatick2 — 🍅 menu-bar / system-tray timer, stopwatch, alarm & pomodoro with timestamped history. Go rewrite of the original macOS-only Tomatick; runs on macOS, Windows & Linux.

• cheatsheets — clean, privacy-first developer cheatsheets as web, PDF & Markdown.

• github-tree-browser — single-file, client-only GitHub repo tree browser for GitHub Pages.

• default-web-pages — a recreation archive of web-server default pages: Microsoft IIS (1995–2022) plus nginx, Apache, Caddy & friends.

• Welcome Message — beautiful Linux MOTD with fastfetch, weather, and system metrics. Multi-distro, multi-shell, idempotent installer.

See more at Pinned Repositories below.

Products & tools

Family, hobby & client sites

• Hub: techguywithabeard.com
• Blog: michalferber.me
• Dev portfolio: michalferber.dev
• Buy Me a Coffee: buymeacoffee.com/techguywithabeard

I build small, well-documented tools that are easy to fork and run. If something here helps you, feel free to fork, file issues, or say hi.