| barycorr | - Generalized multi-mission barycenter correction tool. |
| flx2tab | - Read an input text file with one or more model spectra and convert to an XSPEC table model file. |
| flx2xsp | - Create spectra and response files for XSPEC from an input text file of fluxes and errors. |
| mkfiltrsp | - Read an input text with a filter response to make a single channel response matrix. |
| rebingausslc | - Rebin an irregularly sampled light curve (such as BAT or ASM). |
| rgsrmfsmooth | - Smooth an XMM RGS response matrix for an extended source. |
| rsp2rmfarf | - Split an RSP file into an RMF and an ARF. |
| sdss2xsp | - Create spectra and response files for XSPEC from an SDSS spectral file. |
| sprbnarf | - Rebin an ARF. |
| xrtraytrace | - Calculates the passage of X-ray photons through a thin-foil type X-ray telescope, treating reflection, transmission, scattering, and absorption. |
| xrtreftable | - Calculate the probabilities of reflection and transmission of an X-ray incident upon a mirror surface. |