Solr
lucene.apache.org
WorkBoard
www.workboard.com
Wicket
wicket.apache.org
Sourcetree
www.sourcetreeapp.com
Snap.svg
snapsvg.io
Workato
www.workato.com
WHATWG
whatwg.org
Sourcetrail
www.sourcetrail.com
Smashing Magazine
www.smashingmagazine.com
Woopra
www.woopra.com
Smartling
www.smartling.com
Wireshark
www.wireshark.org
Wercker
www.wercker.com
SonarQube
www.sonarqube.org
SIOS
us.sios.com
Websocket
www.websocket.org
Sinatra
sinatrarb.com
Sidekiq
sidekiq.org
Webpack
webpack.js.org
Shogun
getshogun.com