Bookmarks
Cool Websites — July 23, 2026
Security & Privacy
- Mullvad VPN
- A no-logs VPN that skips email sign-up entirely — it hands you a random account number instead, and takes cash or crypto so no personal identity is ever tied to the account.
- Session
- An end-to-end encrypted messenger that needs no phone number or email; messages route through a decentralized, onion-routed network of community-run nodes instead of a central server.
- CryptPad
- An open-source, zero-knowledge office suite — docs, sheets, kanban boards, forms — where everything is encrypted client-side, so even the people running the servers can't read what you write.
- Exodus Privacy
- A French non-profit's tool that scans Android apps and reports exactly which ad and analytics trackers are embedded inside them, so you can check before you install.
OSINT & Investigation
- VesselFinder
- Real-time AIS-based tracking for global maritime traffic — search any ship by name or IMO number and see its live position, route history, and specs/photos.
- ADS-B Exchange
- A crowdsourced, unfiltered flight tracker that — unlike commercial trackers — refuses to hide military, government, or "blocked" aircraft, making it a go-to for tracking government air movements.
- Metadata2Go
- Free browser tool that extracts hidden EXIF and metadata (GPS coordinates, device info, timestamps, author fields) from images, documents, audio, and video files. *Caution: files upload to a third party, so don't run anything sensitive through it.*
- OSINT Industries
- Aggregates 1,500+ sources to build a profile from just an email, phone number, username, or crypto wallet, surfacing linked accounts and breach exposure. *Powerful and exposure-heavy — use only for legitimate, consensual investigation.*
Cyber / Hacking Tools
- Web Security Academy
- Free, browser-based training from the makers of Burp Suite, covering every major web vulnerability class — SQLi, SSRF, auth flaws — with interactive labs you actually exploit rather than just read about.
- ANY.RUN
- An interactive online malware analysis sandbox — upload a suspicious file or URL and watch it detonate in a real-time virtual machine, clicking through the infection and pulling indicators of compromise.
- Hacker101
- HackerOne's free video-based web security curriculum paired with an always-on CTF of bug-bounty-style challenges, aimed at anyone breaking into vulnerability research.
AI Tools
- AudioPen
- Speak a rambling voice note and it rewrites it into clean, structured text in your choice of style — good for turning stream-of-consciousness thoughts into something usable.
- Krisp
- Real-time AI noise cancellation for calls that strips out barking dogs, construction, and echo, plus an AI meeting note-taker and summarizer.
- Recraft
- An AI design tool that, unlike most image generators, can output clean, editable vector graphics and icons from a prompt — genuinely useful for anyone who needs design-ready assets, not just pretty pictures.
- Numerous.ai
- Adds a simple `=AI()` formula to Google Sheets or Excel so you can bulk-generate, classify, or summarize text directly in spreadsheet cells — no API key required.
Developer Tools
- Ray.so
- Turns code snippets into polished, shareable screenshot images with themes and gradients — built by the Raycast team, free, no signup.
- Debuggex
- An online visual regex tester that renders your pattern as an interactive railroad diagram alongside live match highlighting, for JavaScript, Python, and PCRE.
- Healthchecks.io
- A dead-man's-switch monitoring service for cron jobs — your scheduled task pings a unique URL on each run, and it alerts you by email, Slack, or PagerDuty the moment a ping doesn't show up on time.
- HTTPie
- A friendly API testing client (CLI plus a GUI/web app) for firing off HTTP requests with human-readable syntax — a simpler alternative to heavier API clients.
IT & Sysadmin Tools
- NetworkCalc
- A free IPv4/IPv6 subnet calculator that works out network and broadcast addresses, wildcard masks, and assignable host ranges from any IP or CIDR block.
- DNSBuddy
- A no-signup DNS toolkit that runs multi-resolver lookups (Google, Cloudflare, Quad9, OpenDNS at once), a full record digger, an SPF analyzer, and bulk WHOIS checks on up to 256 domains.
- Authgear SSL Checker
- A free, login-free SSL/TLS certificate inspector — enter any domain to see its expiration date, issuer, SANs, and the full certificate chain from leaf to root CA.
Open Source Software
- OneDev
- A self-hosted DevOps platform bundling Git hosting, pull requests, CI/CD pipelines, and issue tracking in one app, with built-in code search and AI-assisted merge-conflict resolution.
- Postiz
- An open-source social media scheduler that plans, AI-generates, and auto-posts content to 30+ networks from one visual calendar — free to self-host, or a paid hosted plan if you'd rather not.
- Karakeep
- A self-hostable "bookmark everything" app that saves links, notes, images, and PDFs, then uses AI to auto-tag and full-text-index all of it for fast retrieval later.
Productivity & Collaboration
- PairDrop
- A browser-based peer-to-peer file transfer tool that sends files cross-platform between devices with no app install and no account — point two browsers at it and drag a file over.
- Rallly
- An open-source meeting-scheduling poll tool where participants vote on date options through a shared link, with automatic time-zone conversion and no login needed.
- AFFiNE
- An open-source, local-first workspace that merges block-based docs, an infinite whiteboard, and database views into one tool, with optional AI assistance layered on top.
Video & Image Tools
- Pixian.AI
- An AI background remover with a pay-per-image model instead of a subscription; the free tier handles smaller images and does a genuinely good job on tricky edges like hair and fur.
- Upscale.media
- A free browser-based AI image (and short video) upscaler offering 2x–8x enlargement plus sharpening, deblurring, and face restoration — no install required.
- VidShift
- A free video trimmer that runs entirely in your browser via WebAssembly — no upload, no watermark, no signup — with a fast stream-copy mode or a frame-accurate re-encode mode.
Fun / Weird Internet
- Koalas to the Max
- Click a giant grey circle and watch it keep subdividing into ever-smaller circles until a pixel-perfect image of a koala slowly resolves — a hypnotic one-trick toy that's been quietly running since 2010.
- Orb Farm
- A tiny simulated aquatic terrarium that runs entirely in your browser — algae, snails, and shrimp living out an actual little ecosystem you can just watch tick along.
- Pixel Thoughts
- Type whatever's stressing you into a glowing star and watch it slowly shrink and dissolve over 60 seconds — a genuinely research-backed (Massachusetts General Hospital trial), no-account mindfulness reset. --- *34 sites this week. Found something broken or have a site to suggest? Reply to the email.*