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Our understanding of SFDGs has drastically improved in recent years thanks to data from space telescopes and large groundbased optical, near-IR and radio telescopes. In particular the data from HST, GALEX and 21-cm surveys have improved our understanding of the formation and evolution of SFDGs and their relation to other galaxy types. The ACS nearby galaxy survey (ANGST; Dalcanton et al. 2009) uses data from HST to derive CMDs and detailed SF histories. The survey contains 69 galaxies of which 58% are dIs, 17% spirals and the rest dEs. The 11 Mpc Halpha and Ultraviolet Galaxy Survey (11HUGS; Lee et al. 2004) uses Halpha and GALEX images to look at the SF properties of SFDGs in the local volume out to 11 Mpc. Both these surveys also use Spitzer data. A dedicated Spitzer programme, the Spitzer Local Volume Legacy Syrvey (LVL) has observed 258 nearby galaxies, many of which are supplemented by groundbased images in broadbands and Halpha. The Faint Irregular Galaxies (65 dIs) GMRT Survey (FIGGS; Begum et al. 2008), is using the Giant Metrewave Radio Telescope (GMRT) to perform volume limited (< 10 Mpc) H I observations of SFDGs. The H I Nearby Galaxy Survey (THINGS; Walter et al. 2008), at the VLA, includes 34 galaxies, of which about a dozen are SFDGs, in the distance interval 3 < D < 15 Mpc. The resolution is 7" and 5 kms-1. A similar study, 'Little Things', concerns VLA observations of 41 dIs. Finally, the Arecibo Legacy Fast ALFA (ALFALFA) blind extragalactic H I survey (Giovanelli et al. 2005) will survey galaxies at high latitudes out to a radial velocity of 18000 km s-1. It will improve dramatically on the predecessor HI Parkes All-Sky Survey (HIPASS; Barnes et al. 2001). As part of the results the survey will provide us with data of hundreds of dwarf galaxies with H I masses < 107.5 Modot.