qmail add-ons

• acceptutils: Get your messages delivered with TLS, SMTP AUTH, new user-controlled features.
• rejectutils: Block unwanted messages with QMAILQUEUE wrapper, RCPTCHECK wrapper, SMTP filter programs.

qmail patches

• eai: Arnt Gulbrandsen’s EAI patch rebased onto netqmail 1.06 with TLS-onlyremote.
• rfilter: (vaporware) Filter outbound messages — like qmail-qfilter but for qmail-remote.
• rcptcheck: Jay Soffian’s RCPTCHECK patch rebased onto netqmail 1.06 with TLS.
• srs: Marcelo Coelho’s SRS patch rebased onto notqmail.
• tlsonlyremote: Frederik Vermeulen’s TLS patch without the qmail-smtpd parts.

Obsolete, if you’re running notqmail

• destdir: Build as non-root, without hardcoded IDs, to a staging area.
• qbiffutmpx: Detect <utmpx.h> in case the OS no longer provides <utmp.h>.
• remote: Wrap qmail-remote with another program (inspired by QMAILQUEUE).

qmail-adjacent

• mess822-qmailqueue: Bruce Guenter’s QMAILQUEUE patch rebased onto mess822.
• pymsgauth-filter: Filter submitted messages through Charles Cazabon’s pymsgauth using qmail-qfilter.
• qmail-qfilter-grandparent: Correlate qmail-qfilter(1) filters with qmail-smtpd or ofmipd sessions.
• queue-repair-symlink3: Let Charles Cazabon’s queue-repair operate safely when /var/qmail/queue is a symlink.
• syncdir-dlsym: Let Bruce Guenter’s syncdir run on systems without syscall().
• syncdir-libtool: Let Bruce Guenter’s syncdir build a shared library on most any platform.
• ucspi-tcp-destdir: Install ucspi-tcp to a staging area.

JUnit add-ons

• Greencently: All tests green? Commit now, quickly.

CVS add-ons

• CVS for Gits: Make CVS a bit more Gittish.

Browser userscripts

• Edit This Page: Approximation of Universal Edit Button.

Other projects I contribute to

• pkgsrc
• notqmail
• ikiwiki