4 PiSky
website:4 Pi Sky
paper: 4 Pi Sky Transient Alerts Hub
IVOA
List of public event brokers
Gaia
Gaia even stream
Notes by Maria Patterson at LSST
Notes on existing alert systems and VOEvents (story DM-7431) (private)
Comet:
paper by John Swinbank (2014): http://arxiv.org/pdf/1409.4805v1.pdf
website, updated May 2016: http://comet.transientskp.org/en/stable/
code, updated August 2016: https://github.com/jdswinbank/Comet
Dakota:
paper by Robert Denny (2010): http://www.ivoa.net/documents/Notes/DakotaBroker/20100210/NOTE-DakotaBroker-1.0-20100210.pdf
code, updated April 2013: https://sourceforge.net/projects/dakota
voevent-parse:
readthedocs from Tim Staley: http://voevent-parse.readthedocs.io/en/latest/
code, updated May 2016: https://github.com/timstaley/voevent-parse
4pisky tools:
website: https://4piskyorg/voevents/
paper, June 2016: http://arxiv.org/pdf/1606.03735v1.pdf
github org: https://github.com/4pisky
Skyalert (offline as of 2014-07-08, and noted to not be scalable during broker session of summer 2016 AHM):
paper: http://adsabs.harvard.edu/abs/2009ASPC..411..115W, http://aspbooks.org/publications/411/115.pdf
voeventdb:
"Since April 2014 and as of Sept 8, 2016, there are just over 1.23 million VOEvents in the database. Each month on average are ~38,000 new events."
readthedocs documentation