In this section, scientists can find available VO-compatible applications for their immediate use to do science. The level of maturity of the applications depends on a high degree on the level of maturity of the corresponding IVOA protocols and standards.. As a consequence of the flexibility of the standards, several of the applications might overlap in functionality. The IVOA does not manage or guarantee these services/tools. Applications (in alphabetical order) Aladin AppLauncher Cross Comparison Tool CDS Xmatch Service Data Discovery Tool Filter Profile Service Iris Montage Octet SkyView Specview SPLAT TAPHandle TAPsh TESELA Time Series Search Tool TOPCAT / STILTS VisIVO VOConvert VODesktop VOPlot VOStat VOSA VOSED VOServices ( Footprint , Spectrum , Filters , ...) VOSpec WCSFixer Functionality Search for Images: Aladin , Datascope , SkyView , VODesktop , Data Discovery Tool Search for Spectra: Aladin , Datascope , SPLAT , Specview , VOServices , VOSpec , Data Discovery Tool Search for Catalogues: Aladin , Datascope , TOPCAT , VODesktop , Data Discovery Tool Search for Time Series Data: Time Series Search Tool Image visualisation: Aladin , SkyView Spectra visualisation: SPLAT , Specview , VOServices , VOSpec Catalogues visualisation: Aladin , TOPCAT , VOPlot Cross-correlation: Aladin , STILTs , TOPCAT , CDS Xmatch Service , Cross Comparison Tool Scatter, 3D plots and histograms: TOPCAT , VOPlot Statistics: VOStat Footprint Service: Aladin , VOServices Table format conversion: TOPCAT , VOConvert, STILTS Filter curves: VOServices , Filter Profile Service SED building: VOSA , VOSED , VOSpec , Iris Fixing WCS: Aladin , WCSFixer Query Databases Seleste , TOPCAT , TAPHandle , TAPsh VO-compliant Tools Services DS9 : Image visualiasation GOSSIP : SED fitting VirGO: Search for Images and Spectra IRAF : Image Reduction Analysis World Wide Telescope Gaia - Graphical Astronomy and Image Analysis SIMBAD TESELA VizieR Browse the Registries AppLauncher EURO-VO Registry NVO Registry or use VODesktop Manuals, Tutorials, How-tos ADQL TAP Tutorial Aladin User manual Cross Comparison Tool Tutorial ( video ) Datascope how to Data Discovery Tool Tutorial PDF ( video ) Iris How-to ( video ) Montage help SkyView documentation Specview examples SPLAT documentation STILTS documentation TOPCAT documentation VisIVO how to VOSpec User manual 2013-09-07于北师大