Decay series, gamma spectra, nuclides data, etc.
Gamma spectrometry software
Theremino - Still developed and improved with occasional updates.
PRA - Still developed and improved with occasional updates.
Fitzpeaks - Gamma spectrometry software for analysis of measured spectra
OpenGama - Gamma spectrometry software for analysis of measured spectra
Gammaspectacular - Discussions on gamma spectrometry related topics
Fusor.net - Some topics on gamma spectrometry and the radiation detection
Radiation safety and monitoring
MonRas - Radiation moinitoring map of the Czech Republic
uRADMonitor - Environment monitoring global network
National Radiation Protection Institute - Czech Republic institution
State Office for Nuclear Safety - Czech Republic institution
Gamma spectrometry systems for schools and hobbyists
Theremino - Hobby related open source gamma spectrometry system
Gammaspectacular - Hobby related commercial gamma spectrometry systems
RH - electronics - Hobby related commercial gamma spectrometry systems and geiger counters