| Date | Event | Location |
| April 7 - 8, 2005 | Black
Hat Briefings Asia 2005 | Singapore |
| April 7, 2005 | FOSE 2005 | (Washington D.C.
Convention Center)Washington, D.C. |
| April 8 - 10, 2005 | notanothercon(notacon) | (Holiday Inn Select
Cleveland)Cleveland, Ohio |
| April 10 - 15, 2005 | 2005 USENIX Annual
Technical Conference | Anaheim, California, USA |
| April 12 - 15, 2005 | Computers, Freedom and
Privacy Conference 2005 | (Westin Hotel)Seattle, WA |
| April 15 - 17, 2005 | Debian Edu/Skolelinux
workshop | (Nafplion)Athens, Greece |
| April 18 - 23, 2005 | linux.conf.au
2005 | (Australian National University)Canberra, Australia |
| April 18 - 21, 2005 | MySQL Users Conference and Expo
2005 | (Santa Clara Convention Center)Santa Clara, CA |
| April 18 - 20, 2005 | LinuxWorld Conference
and Expo 2005 | (Metro Toronto Convention Centre)Toronto,
ON |
| April 18 - 19, 2005 | Debian Miniconf
4 | Canberra, Australia |
| April 19 - 20, 2005 | San
Francisco techCongress | (Rickey's Hyatt)Palo Alto, CA |
| April 20 - 23, 2005 | ACCU Conference
2005 | (Randolph Hotel)Oxford, England |
| April 21 - 24, 2005 | 3rd International Linux
Audio Conference(LAC2005) | (Center for Art and Media (ZKM))Karlsruhe,
Germany |
| April 21 - 23, 2005 | WebTech
2005 | Sofia, Bulgaria |
| April 23 - 24, 2005 | LayerOne Technology
Conference | (Pasadena Hilton)Pasadena, CA |
| April 25 - 30, 2005 | UbuntuDownUnder | Sydney,
Australia |
| April 30, 2005 | Hurricane Electric Linux Security Seminar | Fremont, CA |
| May 2 - 7, 2005 | DallasCon
2005 | (Richardson Hotel)Dallas, TX |
| May 2 - 4, 2005 | Samba eXPerience
2005 | (Hotel Freizeit)Göttingen - Germany |
| May 2 - 5, 2005 | International PHP
Conference | (RAI Conference Center)Amsterdam, the
Netherlands |
| May 4 - 6, 2005 | CanSecWest/core05 | Vancouver,
B.C. |
| May 11 - 15, 2005 | php|tropics
2005 | (Moon Palace Resort)Cancun, Mexico |
| May 13 - 14, 2005 | BSDCan
2005 | (University of Ottawa)Ottawa, Canada |
| May 19 - 21, 2005 | GUADEC-es 2005 | A
Coruña, Spain |
| May 22 - 25, 2005 | Gelato
Federation Meeting | (HP's Palo Alto and Cupertino campuses)San Jose,
CA |
| May 23 - 26, 2005 | PalmSource
Worldwide Mobile Summit and DevCon | (Fairmont Hotel)San Jose,
California |
| May 24 - 27, 2005 | XTech 2005
Conference | (Amsterdam RAI Center)Amsterdam, the
Netherlands |
| May 25 - 26, 2005 | Linux World New York Summit
2005 | (New York City Marriott Marquis)New York, NY |
| May 29 - 31, 2005 | GNOME Users and Developers
European Conference(GUADEC 2005) | Stuttgart, Germany |
| June 1 - 3, 2005 | The Red Hat Summit
2005 | (Hilton New Orleans)New Orleans, LA |
| June 1 - 4, 2005 | Fórum Internacional
Software Livre(FISL) | Porto Alegre/RS, Brazil |
