| Name | Description | Type | Package | Framework |
| DoubleMatrix1DComparator | A comparison function which imposes a total ordering on some collection of elements. | Interface | cern.colt.matrix.doublealgo | Colt |
| DoubleMatrix2DComparator | A comparison function which imposes a total ordering on some collection of elements. | Interface | cern.colt.matrix.doublealgo | Colt |
| Formatter | Flexible, well human readable matrix print formatting; By default decimal point aligned. | Class | cern.colt.matrix.doublealgo | Colt |
| Partitioning | Given some interval boundaries, partitions matrices such that cell values falling into an interval are placed next to each other. | Class | cern.colt.matrix.doublealgo | Colt |
| Sorting | Matrix quicksorts and mergesorts. | Class | cern.colt.matrix.doublealgo | Colt |
| Statistic | Basic statistics operations on matrices. | Class | cern.colt.matrix.doublealgo | Colt |
| Statistic .VectorVectorFunction | two argument vectors and returns a single value. | Interface | cern.colt.matrix.doublealgo | Colt |
| Stencil | Stencil operations. | Class | cern.colt.matrix.doublealgo | Colt |
| Transform | Deprecated; Basic element-by-element transformations on DoubleMatrix1D and DoubleMatrix2D. | Class | cern.colt.matrix.doublealgo | Colt |