| NGecode | Gecode toplevel namespace |
| NCPProfiler | Code that is specific to the CPProfiler |
| NDriver | Script commandline driver |
| NFlatZinc | Interpreter for the FlatZinc language |
| NAST | Abstract syntax trees for the FlatZinc interpreter |
| NInternal | |
| NFloat | Floating point numbers |
| NArithmetic | Arithmetic propagators |
| NBool | Boolean propagators |
| NBranch | Float branchers |
| NChannel | Channel propagators |
| NLimits | Numerical limits for floating point variables |
| NLinear | Linear propagators |
| NRel | Simple relation propagators |
| NTranscendental | Transcendental propagators |
| NTrigonometric | Trigonometric propagators |
| NGist | The Gecode Interactive Search Tool |
| NLayoutConfig | Parameters for the tree layout |
| NInt | Finite domain integers |
| NArithmetic | Numerical (arithmetic) propagators |
| NBinPacking | Bin-packing propagators |
| NBool | Boolean propagators |
| NBranch | Integer branchers |
| NChannel | Channel propagators |
| NCircuit | Circuit propagators |
| NCount | Counting propagators |
| NCumulative | Scheduling for cumulative resources |
| NCumulatives | Cumulatives propagators |
| NDistinct | Distinct propagators |
| NDom | Domain propagators |
| NElement | Element propagators |
| NExec | Synchronized execution |
| NExtensional | Extensional propagators |
| NGCC | Global cardinality propagators (Counting) |
| NLDSB | Symmetry breaking for integer variables |
| NLimits | Numerical limits for integer variables |
| NLinear | Linear propagators |
| NMember | Membership propagators |
| NNoOverlap | No-overlap propagators |
| NNValues | Number of values propagators |
| NOrder | Int for ordering two tasks |
| NPrecede | Value precedence propagators |
| NRel | Simple relation propagators |
| NSequence | Sequence propagators |
| NSorted | Sorted propagators |
| NUnary | Int for unary resources |
| NViewValGraph | Support classes for propagators using a view-value graph |
| NIter | Range and value iterators |
| NRanges | Range iterators |
| NValues | Value iterators |
| NKernel | Kernel functionality |
| NConfig | |
| NMemoryConfig | Parameters defining memory management policy for spaces |
| NMiniModel | Minimalistic modeling support |
| NSearch | Search engines |
| NConfig | Search configuration |
| NMeta | Meta search engine implementations |
| NSequential | Sequential meta search engine implementations |
| NParallel | Parallel meta search engine implementations |
| NPar | |
| NParallel | Parallel search engine implementations |
| NSeq | |
| NSequential | Sequential search engine implementations |
| NSet | Finite integer sets |
| NBranch | Set branchings |
| NChannel | Channeling propagators for set variables |
| NConvex | Propagators for convexity |
| NDistinct | Propagators for global distinctness constraints |
| NElement | Set element propagators |
| NInt | Propagators connecting set and int variables |
| NLDSB | Symmetry breaking for set variables |
| NLimits | Numerical limits for set variables |
| NPrecede | Value precedence propagators |
| NRel | Standard set relation propagators |
| NRelOp | Standard set operation propagators |
| NSequence | Propagators for ordered sequences of sets |
| NSupport | Support algorithms and datastructures |
| NFailPoint | |
| NJobShopConfig | Default configuration settings |
| NTest | General test support |
| NAssign | Tests for assignments |
| NBranch | Tests for branchings |
| NFlatZinc | Tests for FlatZinc |
| NFloat | Testing domain floats |
| NInt | Testing finite domain integers |
| NSet | Testing finite sets |