I have done some work for different open source projects during my time at university and to a certain degree also after I started working. Currently I actively participate in one project with the permission of my employer in my free time.
I am also started some very small projects that are either not of much interest to a general audience or may be of interest, but nobody has found them yet (hint, hint!).
Large projects:
vert.x (only small contribs yet, but I'm working on that)
Jbehave (some contributions actually made it into the source)
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Jenkins (some fixes to the cvs plugin)
Small projects:
vertx smtp mailer (not quite finished yet, this could become a contribution to the project)
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dokuwiki_gtm Dokuwiki plugin for Google Tag Manager, basically the same as a Google Analytics tag for GTM supporting different tags and tag rules. Dokuwiki page is
here
Previous contributions:
gif2png (this is now maintained by someone else, I have not done anything with this since about 1996)
pnmtopng (this is no longer maintained by me, but it ended up in netpbm, so it's in any Linux now)
gnuplot (maintained that for a short while about 1995)
Other fun projects (mostly using open source components):
monty hall game simulator page (souce for this is not yet published, if anybody is interested in the typescript source, let me know)
pgp sender form send a mail to me with client-side encryption directly to my Evernote account. This project uses openpgpjs and encrypt.to to implement a form that encrypts the message for my pgp key before sending it to the server (the layout of the page uses the template from
Jekyll, I was too lazy to find another one. I really should change that since it doesn't have anything to do with Jekyll except that the pages are generated with it)
Mailtest test if your webmail or email clients leaks images that can be used to identify that you have opened the mail.