Section 1 of the manual describes user commands and tools, for example, file manipulation tools, shells, compilers, web browsers, file and image viewers and editors, and so on.

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DicomSRValidator
Read the DICOM file specified on the command line and validate it against the standard IOD for the appropriate storage SOP Class
DictionaryReader
Dict client for GNUstep
DifOdometry-Camera
DIFODO (visual odometry method) live application
DifOdometry-Datasets
DIFODO (visual odometry method) from datasets
Digestor
topp - library for LC/MS data management and analysis - tools  
DigestorMotif
topp - library for LC/MS data management and analysis - tools  
DiscreteHedging
Example of using QuantLib
DistanceEst
Estimate distances between contigs using paired-end alignments
Drop-seq_alignment.sh
perform Drop-seq tagging, trimming and alignment
DtdToHaskell
a XML DTD to Haskell translator
EDTSurf
quick and accurate construction of macromolecular surfaces
EICExtractor
topp - library for LC/MS data management and analysis - tools  
ERPairFinder
topp - library for LC/MS data management and analysis - tools  
ESingular
Computer Algebra System for Polynomial Computations -- command-line interface within emacs
ETL-config
ETL - Get information about an ETL installation
EdenMath
scientific calculator for GNUstep
Eliza
jabber-querybot - eliza module
EnumVal
xerces-c - xerces-c sample program
Epifany
topp - library for LC/MS data management and analysis - tools  
EquityOption
Example of using QuantLib to value equity options
Esetroot
eterm-utils - Eterm accessory programs
EstimateError.py
Calculates annotation set error rates
Etbg
eterm-utils - Eterm accessory programs
Etbg_update_list
eterm-utils - Eterm accessory programs
Etcolors
eterm-utils - Eterm accessory programs
Eterm
the Enlightened terminal emulator for the X Window System
Etsearch
eterm-utils - Eterm accessory programs
Ettable
eterm-utils - Eterm accessory programs
EukHighConfidenceFilter
detection of transfer RNA genes in genomic sequence
ExecutePipeline
topp - library for LC/MS data management and analysis - tools  
ExplicateUTF8
Explain the status of a sequence of bytes as a UTF8 encoding
ExternalCalibration
topp - library for LC/MS data management and analysis - tools  
FBReader
e-book reader
FCluster
AmpliconNoise - remove noise from high throughput nucleotide sequence data
FFEval
topp - library for LC/MS data management and analysis - tools  
FRA
Example of using QuantLib
FTP
File transfer protocol application
FalseDiscoveryRate
topp - library for LC/MS data management and analysis - tools  
Fast5_to_seq_summary
generate a sequencing summary like file from a directory containing Fast5 files
FastTree
fasttree - create phylogenetic trees from alignments of nucleotide or protein sequences
FastaUnique
AmpliconNoise - remove noise from high throughput nucleotide sequence data
FeatureFinderCentroided
topp - library for LC/MS data management and analysis - tools  
FeatureFinderIdentification
topp - library for LC/MS data management and analysis - tools  
FeatureFinderIsotopeWavelet
topp - library for LC/MS data management and analysis - tools  
FeatureFinderMRM
topp - library for LC/MS data management and analysis - tools  
FeatureFinderMetabo
topp - library for LC/MS data management and analysis - tools  
FeatureFinderMetaboIdent
topp - library for LC/MS data management and analysis - tools  
FeatureFinderMultiplex
topp - library for LC/MS data management and analysis - tools  
FeatureFinderSuperHirn
topp - library for LC/MS data management and analysis - tools  
FeatureLinkerLabeled
topp - library for LC/MS data management and analysis - tools  
FeatureLinkerUnlabeled
topp - library for LC/MS data management and analysis - tools  
FeatureLinkerUnlabeledKD
topp - library for LC/MS data management and analysis - tools  
FeatureLinkerUnlabeledQT
topp - library for LC/MS data management and analysis - tools  
Feel
Feel  - AfterStep feel configuration  
FeelWindowBox
FeelWindowBox  - defines placement policy for certain type of windows, based on desk, window attributes, window size, etc. Useful for xinerama configurations, where windows should not be placed in between screens.  
FidoAdapter
topp - library for LC/MS data management and analysis - tools  
FileCheck-13
FileCheck - Flexible pattern matching file verifier
FileCheck-14
FileCheck - Flexible pattern matching file verifier
FileCheck-15
FileCheck - Flexible pattern matching file verifier
FileCheck-16
FileCheck - Flexible pattern matching file verifier
FileConverter
topp - library for LC/MS data management and analysis - tools  
FileFilter
topp - library for LC/MS data management and analysis - tools  
FileInfo
topp - library for LC/MS data management and analysis - tools  
FileMerger
topp - library for LC/MS data management and analysis - tools  
FilterSeq.py
Filters sequences in FASTA/FASTQ files
FittedBondCurve
Example of using QuantLib to fit discount curves
FontManager
manage your fonts in GNUstep
FreeFem++-mpi
executes FreeFem++ scripts
FreeFem++-nw
executes FreeFem++ scripts
FreeFem++
executes FreeFem++ scripts
FreeFileSync
a folder comparison and synchronization tool (GUI)
Fritzing
fritzing - from prototype to product
Functions
Functions  - built in AfterStep functions  
FuzzyDiff
topp - library for LC/MS data management and analysis - tools  
Fvwm2Animate
FvwmAnimate - the fvwm animate module
Fvwm2Auto
FvwmAuto - the fvwm auto-raise module
Fvwm2Backer
FvwmBacker - the fvwm background changer module
Fvwm2Banner
FvwmBanner - the Fvwm Banner module
Fvwm2Buttons
FvwmButtons - the fvwm buttonbox module
Fvwm2Command
FvwmCommand - fvwm command external interface  
Fvwm2Console
FvwmConsole - an fvwm command input interface  
Fvwm2ConsoleC.pl
FvwmConsoleC.pl - Command editor for fvwm command input interface
Fvwm2Cpp
FvwmCpp - the Fvwm Cpp pre-processor
Fvwm2Event
FvwmEvent - the fvwm event module
Fvwm2Form
FvwmForm - input form module for Fvwm
Fvwm2IconMan
FvwmIconMan - an fvwm icon manager
Fvwm2Ident
FvwmIdent - the Fvwm identify-window module
Fvwm2M4
FvwmM4 - the fvwm M4 pre-processor
Fvwm2Pager
FvwmPager - the Fvwm Pager module
Fvwm2Perl
FvwmPerl - the fvwm perl manipulator and preprocessor
Fvwm2Proxy
FvwmProxy - the fvwm proxy module
Fvwm2Rearrange
FvwmRearrange - rearrange fvwm windows
Fvwm2Script
FvwmScript - module to build graphic user interface  
Fvwm3Animate
FvwmAnimate - the fvwm animate module
Fvwm3Auto
FvwmAuto - the fvwm auto-raise module
Fvwm3Backer
FvwmBacker - the fvwm background changer module
Fvwm3Buttons
FvwmButtons - the fvwm buttonbox module
Fvwm3Command
FvwmCommand - send commands to fvwm3
Fvwm3Console
FvwmConsole - an fvwm command input interface
Fvwm3Event
FvwmEvent - the fvwm event module