Automattic

jetmon monitors WordPress.com and Jetpack sites for uptime and availability issues, automatically checking sites to ensure they remain accessible.

Jetpack is a developer helper operated by Automattic. If you think this is incorrect or can provide additional detail about its purpose, please let us know.

Tumblr is Automattic's link unfurling bot that fetches URL content to create rich Link Blocks in Tumblr posts, parsing responses to display titles, descriptions, and preview images for shared links.