LabDiary is a program for managing laboratory experiments in a sophisticated way. It is very easy to use - you can link experiments logically with each other, associate files to an experiment and structure all your data.
FRIDA (flexible rapid interactive data analysis) is a generic program for manipulating, fitting, and plotting x,z,y data. It is primarily aimed at spectral analysis, especially in neutron scattering. Note: project has moved away from sf.net.