|-
! scope="col"| Source Type
! scope="col"| Applications
! scope="col"| Restrictions
! scope="col"| Supporting Module(s)
|-
| Lumped Source
| General-purpose point voltage source
| Associated with a PEC or thin wire line
| [[EM.Tempo]]
|-
| Distributed Source
| General-purpose distributed voltage source
| Associated with a virtual rectangle strip
| [[EM.Tempo]]
|-
| Microstrip Port Source
| Used for S-parameter computations
| Associated with a PEC rectangle strip
| [[EM.Tempo]]
|-
| CPW Port Source
| Used for S-parameter computations
| Associated with a PEC rectangle strip
| [[EM.Tempo]]
|-
| Coaxial Port Source
| Used for S-parameter computations
| Associated with a PEC Cylinder
| [[EM.Tempo]]
|-
| Waveguide Source
| Used for S-parameter computations
| Associated with a hollow PEC box
| [[EM.Tempo]]
|-
| Wire Gap Circuit Source
| General-purpose point voltage source
| Associated with a PEC or thin wire line
| [[EM.Libera]]
|-
| Strip Gap Circuit Source
| General-purpose point voltage source
| Associated with a PEC rectangle strip
| [[EM.Picasso]], [[EM.Libera]]
|-
| Probe Gap Circuit Source
| Used for modeling short coaxial probes
| Associated with a PEC embedded via
| [[EM.Picasso]]
|-
| Scattering Wave Port Source
| Used for S-parameter computations
| Associated with a PEC rectangle strip
| [[EM.Picasso]]
|-
| Hertzian Dipole Source
| General-purpose short filament current source
| Stand-alone source
| [[EM.Tempo]], [[EM.Illumina]], [[EM.Picasso]], [[EM.Libera]], [[EM.Terrano]]
|-
| Plane Wave Source
| Used for scattering computations
| Stand-alone source
| [[EM.Tempo]], [[EM.Illumina]], [[EM.Picasso]], [[EM.Libera]]
|-
| Gaussian Beam Source
| Used for modeling focused beams
| Stand-alone source
| [[EM.Tempo]]
|-
| Huygens Source
| Used as a distributed equivalent
| Imported from a Huygens data file
| [[EM.Illumina]], [[EM.Picasso]], [[EM.Libera]]
|-
| Transmitter Set
| Used as a point source with an imported radiation pattern
| Associated with a point or point array
| [[EM.Terrano]]
|-
| Fixed-Potential PEC with Nonzero Voltage
| Used as a distributed DC voltage source
| Requires drawing geometric objects
| [[EM.Ferma]]
|-
| Volume Charge Source| Used as a distributed eelctric charge source | Requires drawing geometric objects
| [[EM.Ferma]]
|-
| Wire Current Source| Used as a linear filament current source | Requires drawing geometric objects
| [[EM.Ferma]]
|-
| Volume Current Source| Used as a distributed elctric current source | Requires drawing a line or polyline
| [[EM.Ferma]]
|-
| Permanent Magnet with Nonzero Magnetization| Used as a distributed magnetization source | Requires drawing geometric objects
| [[EM.Ferma]]
|}
|-
| [[EM.Tempo]]
| style="width:350px;" | Lumped and , distributed , microstrip, COW, coaxial and waveguide sources, plane wave, Gaussian beam, arbitrary waveform | style="width:250px;" | Passive and activeResistor, linear capacitor, inductor and nonlinear devices and circuits diode
|-
| [[EM.Terrano]]
|-
| [[EM.Ferma]]
| style="width:270px;" | ChargeVolume charge, volume current, wire current and permanent magnet
| style="width:250px;" | N/A
|-
| [[EM.Picasso]]
| style="width:350px;" | Gap sourceStrip and probe gap circuit sources, scattering wave port, Hertzian dipole, plane wave, Huygens source
| style="width:250px;" | Simple passive RLC lumped elements
|-
| [[EM.Libera]]
| style="width:350px;" | Gap sourceStrip and wire gap circuit sources, Hertzian dipole, plane wave, Huygens source
| style="width:250px;" | Simple passive RLC lumped elements
|}