Web Brick
1,154 websites

Web Brick is free to use

http://ruby-doc.org/stdlib-1.9.3/libdoc/webrick/rdoc/WEBrick.html

WEBrick is a Ruby library program to build HTTP servers.

VS

Xing
286 websites

Xing offers both free and paid options

https://www.xing.com/

XING is the social network for work, business and career. Discover old and new contacts, jobs, events, companies, groups and discussion forums.

Market Share by Top Websites

1 Web Brick is leading in Top 1M Sites and The Entire Web.

2 In terms of market share, Xing is clearly lagging behind, losing to Web Brick in all segments.

Websites Categories

1 Web Brick has better usage coverage in more websites categories. Including Computers Electronics & Technology, Science & Education, Games, Arts & Entertainment and 17 other categories.

2 Xing is leading in Jobs & Career and Heavy Industry & Engineering.

Geography

1 Web Brick is leading in most countries, including United States, Japan, Canada, United Kingdom and 71 other countries.

2 Xing is leading in France, Austria, Saudi Arabia, Morocco and 9 other countries.