This is the basic program to work with .PGM extension

ACDSeeACDSee PGM Image

As the choice software for the practical amateur, ACDSee 20 is trusted digital asset management paired with photo editing essentials... (more) The program works with the following extensions: gz, gif, rar, jpg, tgz, png, psd, ico, zip, bmp, wmf, jpeg, djvu, z, bw, icl, bz2, pcd, xif, pix, qcp, icn, pcx, xpm, ppm, sml, int, lha, pef, wbm, jpe, ras, ulw, lzh, raf, ais, rgb, xbm, eps, iw4, srf, art, tga, j2k, tar, b64, ddf, pct, sgi, cr2, jpc, taz, ani, mag, pic, crw, jpk, tbz, sid, kdc, dcr, jpx, cur, ldf, sr2, dng, plp, uue, dcx, lwf, erf, rsb, psp, bay, mos, thm, j2c, raw, cs1, mrw, ttc, jif, tif, djv, nef, ttf, cab, jp2, fff, ace, orf, v7o, dib, lbm, fpx, arj, pbm, v7p, emf, pgm, bwf, jfif, inta, rgba, wbmp, pict, qtpf, tiff and 032

.PGM extension is also supported by the following programs:

	IrfanViewIrfanView PGM File
	Freeware graphic image and media viewer and converter.

	GIMPNetpbm format
	GIMP is a free versatile graphics manipulation package.

	ALSeeALSee PGM File
	ALSee is a user-friendly and convenient image viewer and photo editor.

	Ulead Photo ExplorerMySQL Tools for
	Ulead Photo Explorer is a complete solution for digital media enthusiasts.

	Internet ExplorerPortable Anymap Image
	Browse the Web in a secure environment with HTML5 support.

	HyperCDMySQL Tools for

	Visual Photo++Visual Photo++ file
	A comprehensive tool for enhancing and correcting your digital photos.

	Zoner Photo Studio XPNM bitmap image
	Create, manage, edit and enhance your photos through an all inclusive software.

	MAGIX Photo ManagerPGM-Bilder
	Photo Manager lets you present your photos and videos impressively.

	i-Fun Vieweri-Fun Viewer Image
	i-Fun Viewer is an advanced image viewer supporting most popular image formats.

	Smart Pix ManagerSmart Pix Image
	Smart Pix Manager - management and viewing of all types of media files.

	PagisPagis Image Document

	XnViewMySQL Tools for
	Efficient multimedia viewer, browser and converter.

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