VStar is a multi-platform, easy-to-use variable star data visualization and analysis tool. Data for a star can be read from the AAVSO database or from a text file of your own creation. It will plot the data on a light curve then you can choose to superimpose means data and error bars if you like. VStar can also create phase plots and perform basic period search functions, all of which make it a valuable tool for data analysis. Read more