PortaBase is a program for conveniently managing one-table database files. It can be used as a shopping list, media inventory, TODO list, address book, photo album and more. It is available for many platforms, including Linux, Mac OS X, Windows, and Maemo. Features include:

* String, Integer, Decimal, Boolean, Note (multi-line text), Date, Time,
Calculation, Sequence, Image, and Enum column types;
* custom data views (subsets of the columns in any order);
* filter the displayed rows using sets of conditions;
* sort the rows by any combination of columns, each in ascending or
descending order;
* add, delete, rearrange, and rename columns at any time;
* view summary statistics for columns (total, average, min, max, etc.);
* import data from CSV, XML, and MobileDB files;
* export data to CSV, HTML and XML files;
* command-line format conversions (to and from XML, from MobileDB,
to HTML);
* optional data file encryption.