Sphere Online Judge (SPOJ)

Running contests

CODE	NAME	START	END
HSPL09	High School Programming League 2009/10	2009-09-05 12:00:00	2010-06-01 00:00:00
OI	Olympiad in Informatics	2008-12-01 00:00:00	2020-01-01 00:00:00
CH24	Challenge 24 Electronic Contest Practice	2009-01-01 00:00:00	2020-01-01 00:00:00
HSPLARCH	High School Programming League Problems Archive	2009-01-01 00:00:00	2020-01-01 00:00:00

Past contests

CODE	NAME	START	END
SNYC2010	Happy New Year 2010	2009-12-31 00:00:00	2010-01-01 11:00:00
HSPL08	High School Programming League 2008/2009	2008-09-20 12:00:00	2009-06-06 12:00:00
MIT081	MIT Individual Contest 2008	2009-01-18 18:00:00	2009-01-18 23:00:00
ZFUN08	Open Contest 2008	2008-05-03 00:00:01	2008-05-20 00:00:01
MIT072	MIT 1st Team Contest 2007	2008-02-03 18:00:00	2008-02-03 23:00:00
OLYMCUP	Olympic Cup	2007-11-10 09:00:00	2007-11-10 21:00:00
MIT071	MIT Individual Contest 2007	2007-11-03 15:00:00	2007-11-03 20:00:00
NITTLOCL	NITT ACM ICPC Local Contest 2007	2007-10-14 12:00:00	2007-10-14 18:00:00
PT07	Play with Trees	2007-04-25 02:00:00	2007-04-30 02:00:00
ZFUN07	Open Contest 2007	2007-04-15 00:01:00	2007-04-27 00:01:00
ZFUN06	Open Contest 2006	2006-03-23 00:01:00	2006-04-15 00:01:00
ULM_05	University of Ulm Local Contest 2005	2005-07-02 09:00:00	2005-07-02 14:00:00
LIGA04	Programming League 2004/05	2004-10-09 00:00:00	2005-06-05 00:00:00

So far we have hosted 850 contests (625 completed, 222 currently running, 3 scheduled), of which 17 were official and 674 were open to all participants. If you are interested in receiving contest hosting privileges for your SPOJ account, please drop us a line.