draw.io
FreeFree, open-source diagramming tool. Flowcharts, network diagrams, UML, floor plans. Works offline, saves to Google Drive/GitHub/local. Widely used in enterprises as a Visio alternative.
How to install draw.io as a PWA
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Share files up to 10GB with end-to-end encryption. Files are never stored permanently — they vanish after download or 24 hours. No account, no tracking. Faster than WeTransfer.
Open-source password manager — the best LastPass alternative. End-to-end encrypted vault, browser extension, cross-device sync. Free for personal use, self-hostable.
Check if a food product is vegan by scanning its barcode or searching by ingredient. Open-source, offline-capable. Built for people who want to verify product contents quickly.
Convert between 500+ file formats in your browser. Documents, images, audio, video, ebooks — fast client-side conversion that doesn't upload your files to a server.
Scan QR codes and barcodes using your device camera. Works offline, no app download needed. Faster than downloading a native app — just open in browser and scan.
Create QR codes for URLs, text, Wi-Fi, contacts, and more. Customize colors and download as SVG or PNG. No account, fully client-side, instant generation.