Contributes to jQuery UI, QUnit, and jQuery Mobile .
Contributes to Evolution (as ‘Jukka Zitting/evolution’), jsr-283 (as ‘jukka_zitting’), and Midgard2 .
Contributes to boon, excon, and Puppetlabs Puppet Modules .
Contributes to PHPMD - PHP Mess Detector, PHP_Depend, and VCS-Wrapper (as ‘mapi’) .
Contributes to pdf.js-emp, app-validator, and homebrew-dupes .
Contributes to CFEclipse .
Contributes to tinkerpop's blueprints, Tevere Flow (as ‘lvca’), and Orient ODBMS (as ‘lvca’) .
Contributes to CSniper (as ‘richard.eckart’), DKPro LSR (as ‘richard.eckart’), and DKPro Spelling (as ‘richard.eckart’) .
Contributes to paragon-team (as ‘nbalika’), L2jFree: Genesis, and L2JFree .
Contributes to leaflet-map, webflag (as ‘dar-hendrikus’), and log4j-gwt .