Networking

  • CentralOps - Advanced online internet tools
  • MXToolbox - DNS and Network troubleshooting and diagnostic tools integrated into one sweet interface
  • Robtex - Fastest and most comprehensive free DNS lookup tool on the Internet

Coding

  • Git
  • Hexo - A fast, simple & powerful blog framework
  • Regex Tester - Regex101 - online regex editor and debugger

Security

  • Electronic Frontier Foundation - The Electronic Frontier Foundation is the leading nonprofit organization defending civil liberties in the digital world
  • Watchlist Internet - Warnung vor Spam, Online-Betrug, usw…
  • CERT - Computer Emergency Response Team Austria
  • ESXi Patch Tracker - VMware ESXi Patch Tracker
  • Exchange Server - Exchange Server build numbers and release dates
  • CVE Details - The ultimate vulnerability database
  • Maildrop - Save your inbox from spam. Use MailDrop when you don’t want to give out your real address.

Images

  • Gratisography - Free high-resolution pictures you can use on your personal and commercial projects.
  • Color Lisa - Color palette masterpieces from the world’s greatest artists.
  • Coolors - The super fast color schemes generator!