TOPCAT  

Tool for OPerations on Catalogues And Tables

TOPCAT is a viewer and editor for tabular information. It has been designed for use with astronomical tabular data, but is not restricted to astronomical use. It understands a number of different astronomically important formats, and more formats can be added.

Here is a list of its main features, described in more detail elsewhere in this help document:

• View/edit table data in a scrollable browser
• View/edit table and column metadata
• Re-order or delete columns
• Insert 'synthetic' columns (algebraic expression)
• Sort rows on the values in a given column
• Define row subsets in various ways
• Plot columns against each other, distinguishing different subsets
• Calculate statistics on each column for some or all rows
• Write modified table out in original or different format
• Launch other programs (Mirage)

Please note: TOPCAT is a young product under active development, and this version is Beta software. More information about its current state can be found at the TOPCAT website.