   opencanvas is a graphic/paint/drawing software developed and published by pgn corp. it was originally released as freeware in 2000, but moved to a demo/retail model starting with version 2. all functions are available during the limited demo period. a higher performance version "opencanvas plus" has been released simultaneously since version 3. while its basic functions are similar to adobe photoshop or corel painter, opencanvas has a growing community of users all over the world which can be found on the pgn user community section of the portalgraphics website. in 2009, portalgraphics.net ended the sales of the opencanvas english versions. at the same time, they ended the english version of the portalgraphics website and their online english customer services including pgn user community. english customer support was to be discontinued on july 31, 2010. however, the english portalgraphics website went active again shortly afterwards, and portalgraphics has continued sales of opencanvas series to the present. the latest version "opencanvas 5.5.18" was released on july 26, 2013 in japanese and english. on july 3, 2014 "opencanvas 6.0.00" was released with 64-bit support. == system requirements == ===opencanvas 4.5/ 4.5 plus=== opencanvas 4.5/ 4.5 plus was released on april 5, 2007. windows * os: windowsme / 2000 / xp (neither windows 98 nor 95 are supported. opencanvas 4.5/ 4.5 plus does not support windows vista formally.) * hdd: more than 10mb free capacity * cpu: more than intel pentium 500&nbsp;mhz * ram: 128 mb * [[display 
2000_software Raster_graphics_editors