dns checker

No-IP DUC is a complete managed DNS Solution.

Client for free DynDNS.org DNS web service.

Website broken-link checker and more.

Virus checker based on ClamAV.

Speaking email checker for Apple Mail.

Faster Mail.app spell checker.

XML and XHTML checker.

Spell checker.

System wide Icelandic spell checker for Mac OS X.

Multi-document spelling checker, LaTeX-aware.