1)   Merge Cells Wizard 1.0
Merge Cells Wizard is an add-in that joins cells values. Use Merge Cells Wizard each time you need to place values from several cells to one cell or when you need to join several cells preserving the values of these cells.
excel add-in, merge cells, split cells,

 2)   Table Library 1.1
A Java GUI library that enhances the functionality and appearance of JTable. Data can also be displayed in a "Treetable" view. Features include data sorting and filtering, dynamically add/remove columns etc. Can be easily integrated into your code.
java components, java, table, pivot, database treetable, tablemodel, jtable, sorting, filtering, excel,