Browser Extensions, SaaS, App Store Apps & Online Tools

SiteTraceKit is a technical website, domain and trust-signal checker for public web addresses. It reviews HTTP, DNS, TLS, RDAP, security headers, technologies, indexability and archive hints, then explains the findings in context.

Client side web app with Pomodoro, countdown, stopwatch, interval, study and fullscreen timers. No accounts, no database, local browser settings and multilingual content.

Browser based calculator for electricity costs, PV, storage, EV charging and financial projections. Inputs are calculated locally, without accounts and without a central database of user values.

Browser based tool for importing and previewing website ZIPs, HTML files and local web demos. Focused on safe preview, local asset resolution and blocked risky file types.

Privacy-first security tool for assessing links, QR codes and potentially risky destinations before opening. Local pattern checks, risk hints and clear limits instead of false security guarantees.

Privacy-friendly web app for scanning, checking, creating and designing QR codes and barcodes directly in the browser. No accounts, no backend API, no database and local processing.

Free web app with 18 interactive ranking, voting and decision tools. From tier lists to tournament brackets to spinner wheels. All in the browser, no account needed.

Over 25 finance, real estate and tax calculators for Germany. From gross-to-net to mortgage to ETF savings plans. Free, in the browser, no data on servers.

18 professional image editing tools that run entirely in your browser. No uploads, no account, no limits. Your images never leave your device.

Bidirectional converter between Office documents and Markdown with 14 engines, 10 templates and AI optimizer. 100% local in the browser.

Free video editor that runs entirely in the browser. 13 editor tools, batch processing, social media presets and audio editing. No installation, no uploads.

Free 3D CAD tool in the browser with visual builder and code editor. For makers, 3D printing enthusiasts and students. Runs offline as PWA. A companion browser extension is in development.

Web app for exchanging texts, links and files between your own devices. Runs in the browser and uses Supabase Auth, Realtime and temporary storage for published cross device workflows.

Browser extension for Chrome and Firefox that automatically protects you from fraud, phishing and tracking while you browse. Over 157,000 known scam sites are blocked, more than 70 IP loggers detected and 45 dangerous protocols stopped.

Browser extension for Chrome and Firefox with price comparisons, market trends, competition analyses and integrated fee calculator directly on eBay.

Online tool for removing sensitive metadata from photos, PDFs and documents. Processing directly in the browser, nothing is uploaded. For GDPR compliant workflows.

Free online tool for detecting AI generated texts. Confidence score and color marking of suspicious passages. For teachers, editors and recruiters.

Create links that self destruct after a certain number of clicks. For time limited offers, exclusive invitations and one time downloads.

Web platform for tracking all subscriptions, contracts and recurring costs. With cancellation reminders, payment calendar and European country comparison.

Web based platform for managing small and medium businesses. CRM, project management, invoicing and financial overview in one dashboard.

Crequence helps creators plan their own YouTube channels, videos, tasks, and ideas together — Local First for iPhone and iPad.

Stepluma helps you keep steps, progress, and personal goals in view on iPhone, with no registration, GPS step tracking, or advertising.

DeviceAid offers local, guided iPhone checks and helpful tools for speakers, microphone, display, touch, haptics, motion, and more.

IntakeCue organizes private reminders for medicines, supplements, and personal routines, including offline and without an account.

Kindlume helps you keep important people, shared moments, reminders, and small relationship rituals in private view.

WakeGate combines iPhone alarms with movement, NFC, and flexible wake-up challenges — local first, with no account, tracking, or ads.

JotCue is a local iPhone app for quickly capturing thoughts by voice or text. Captures land in the inbox and can be organized as notes or tasks, assigned to projects, threads, and categories. Tasks support a due date, time, and local reminders. No account, no custom backend.

Voxavo is a simple, local communication aid for typing and speaking aloud, amplifying your own voice, and saving frequently used phrases.

Wavevra analyzes audio in real time and turns frequencies, levels and waveforms into expressive visuals. Record audio or video, import existing media, shape the result in Studio and export it directly on your iPhone.

From El Ajedrecista to Deep Blue and a modern local engine, ChessMachina makes different generations of machine chess thinking playable and understandable.

A local wedding planner for tasks, guests, RSVPs, seating, vendors, budget, and the wedding day itself.

Browser extension for Chrome with price analytics and portfolio tracking for Cardmarket sellers. Track card prices and manage inventory more efficiently.

SaaS platform for managing license keys. Create, validate and manage through a ready made API and SDKs without your own infrastructure.

All in one monitoring platform for solo developers and small teams. 9 or more check types: uptime, SSL, DNS, breach, domain, zombie and more. Alerts via Telegram, email and webhook.

Planned web app for garden planning, bed and area editor, seasonal planning and guide pages. The focus is local storage and privacy-friendly planning workflows.

Planned redaction tool for PDF, PNG and JPG with manual redaction, metadata cleanup, recheck and secure export modes. Designed as a local browser/PWA solution.

Planned website audit tool for SEO, crawlability, indexability, performance, privacy, tracking, conversion and technical baseline security. URL scans will likely need a backend.

FindabilityKit is planned as a non-live web app/SaaS concept for traffic readiness, SEO and AI visibility. It should review public website signals with rules, without guaranteeing rankings, traffic or mentions in AI answers.

FeedbackAnchor is planned as a non-live SaaS platform for small and medium-sized businesses. Feedback should be collected through links, QR codes and widgets and turned into understandable action points, without promising perfect automatic classification.

PastwareLab is planned as an international browser-based software history lab. The focus is static learning stations, clean-room simulations and legally cautious classification of historical content, not providing protected original software.

IntentPause is a non-live mobile app concept for short pauses before opening selected apps. The focus is local, privacy-first reflection, without promising medical, therapeutic or behavior-changing effects.

SweatKey turns steps and workouts into time you can use for your protected apps.

OwnSay is planned as an iPhone/iPad universal app for assisted communication. The concept focuses on symbol- and button-based statements, routines and quick responses, without claiming medical effects or therapeutic guarantees.

Mentelys is a native iPhone app for cognitive training and personal progress tracking with six training areas, adaptive difficulty, and Personal Recall.