The Open Source Developers' Conference (OSDC) was a non-profit conference for developers of open-source software. It was started in Australia in 2004, and later expanded to Israel, Taiwan, Malaysia, France and Norway, where conferences began in 2006, 2007, 2009, 2009 and 2015, respectively. No further conferences have been held since 2015.

The conference was open to talks about software developed for any platform or operating system so long as the talk was of interest to open-source developers. Talks about closed source projects which used open-source languages or open-source projects which used close source languages were accepted. Talks have covered languages such as Perl, Python, PHP, Ruby, Groovy, Scala, Java, Mono and C. Other talks have covered open-source tools such as databases and revision control systems or meta-topics such as talk presentation hints, and working with others.

The conference was founded by Scott Penrose and first organised by members of the Melbourne Perl Mongers group in Melbourne, Australia in 2004. Originally it had been intended to be a YAPC-style (Perl) conference, but after discussions with the Melbourne PHP Users Group it was expanded to include PHP and Python talks. Following the 2004 conference's success, Scott Penrose created the Open Source Developers' Club Association to encourage programmers of other languages to also be involved in running the conference. At first this was an entirely Melbourne based organisation, but after the 2005 conference, it expanded to include members from elsewhere in Australia. At the end of 2006, control of running the conference for 2007 was given to a group in Brisbane, with the Open Source Developers' Club Association committee members taking the role of overseers.

In 2013 the Open Source Developers' Club Association awarded the running of the event to a team in Auckland New Zealand, further expanding the conference with an Australasian focus.

• 2015
  • Dr. Maia Sauren (video)
  • Mark Elwell: Climbing the Garden Wall – An Educator's Odyssey in Second Life and OpenSim (video)
  • Richard Tubb: Opportunities in Openness. Driving positive change in local communities (video)
  • Michael Cordover: EasyCount, freedom of information and openness (video)
  • Pia Waugh: Open source in government: lessons from the community (video)
• 2014
  • Richard Keech: Linux-based Monitoring and Control in a Sustainable House
  • Jaap van Till (2014), "Keynote", OSDC
  • Lynn Fine, Code for America: Using tech for improving social impact, involving community in open government, and helping governments make use of open source
  • Dr Tom Stace: The current state of quantum computing, and related open source projects
• 2011
  • Senator Kate Lundy [Parliamentary Secretary to the Prime Minister and Parliamentary Secretary for Immigration and Multicultural affairs]: Openness in government: from data to crowdsourcing
  • Jonathon Oxer: Freedom for Atoms!
  • Damian Conway: Fun with Dead Languages
  • Brian Catto [Director of Architecture and Emerging Technologies, AGIMO]: Open Source Software and the Australian Government
  • Tony Beal [Deputy General Counsel – Commercial, Australian Government Solicitor]: Legal Trips, Traps and Solutions for Open Source Software Developers
• 2010
  • Ingy döt Net: C'Dent, the Acmeism and Everyone
  • Nóirín Shirley: Baby Steps into Open Source – Incubation and Mentoring at Apache
  • Michael Schwern: How to Report a Bug
  • Damian Conway: Temporally Quaquaversal Virtual Nanomachine Programming In Multiple Topologically Connected Quantum-Relativistic Parallel Timespaces...Made Easy!
• 2009
  • Karen Pauley: Understanding Volunteers
  • Marty Pauly:
  • Dhanji Prasanna: Google Wave
• 2008
  • Anthony Baxter:
  • Chris DiBona:
  • Andrew Tridgell:
  • Larry Wall:
  • Pia Waugh:
• 2007:
  • Rusty Russell: C: A Humbling Language (opening keynote)
  • Rasmus Lerdorf: Exploring the Broken Web
  • Paul Fenwick: An Illustrated History of Failure (dinner keynote)
  • Jonathan Oxer: Software Freedom: Pragmatic Idealism?
  • Nathan Torkington : Software For The Future (closing keynote)
• 2006:
  • Randal L. Schwartz: Free software – A look back, a look ahead (opening keynote)
  • Damian Conway: The Da Vinci Codebase (dinner keynote)
  • Richard Farnsworth: Open Source Synchrotron
  • Anthony Baxter: futurepython
  • Scott Penrose: Zaltana.org (closing keynote)
• 2005
  • Anthony Baxter: How to give a good presentation (dinner keynote)
  • Audrey Tang: Introduction to Pugs: Perl 6 in Haskell
  • Jonathan Oxer: Making things Move: Finding Inappropriate Uses for Scripting Languages
  • Savio Saldanha: Oils aint Oils: A comparison of some open source and closed source databases
  • Pia and Jeff Waugh: "Untitled Keynote" (closing keynote)
• 2004
  • Damian Conway: Perl 6: OO Made Insanely Great (opening keynote)
  • Con Zymaris: Using the Open Source Methodology to Make Money from Your Software (dinner keynote)
  • Nathan Torkington: Open Source Trends
  • Anthony Baxter : "Scripting Language" My Arse: Using Python for Voice over IP
  • Luke Welling: MySQL 2005
  • Damian Conway: Sufficiently Advanced Technology (closing keynote)

• Papers from OSDC Australia 2007
• Papers from OSDC Australia 2006
• Papers from OSDC Australia 2005 and 2006
• Papers from OSDC Australia 2004

• linux.conf.au
• O'Reilly Open Source Convention
• YAPC

Wikimedia Commons has media related to Open Source Developers' Conference.

• OSDC, Australia
• OSDC, Israel
• OSDC, Taiwan
• OSDC, Malaysia
• OSDC, France