Ping-O-Matic - Service to update different search engines that your blog has updated.
Andy Chatbot - Learn and practice English with exercises, grammar and games
TotalPing! - Promote your blog with TotalPing!
BoldVoice - Accent coaching app for non-native English speakers
Pingler - Pingler is a tool that allows you to ping your blog or website, so that followers can know if your site is online after any update, maintenance, etc.
Subtly - Learn English with smart subtitles on movies and TV shows