Macs:
AFP548 – Mac sysadmin and server related
MacScripter – AppleScript, Automator
Swift blog – Apple’s new preferred programming language
MacTeX – a superb distribution of TeX
Technology:
OpenDNS – free go-anywhere DNS and more
Language:
Alan Wood’s Unicode resources
ScriptSource – writing systems and computers
Multilingual Mac – language support and issues
Text Encoding Initiative – preserving important documents
Language Log – an outstanding blog for anyone interested in language
Painting:
Jackson’s Art Supplies (also a fine blog) – the best and most comprehensive art materials supplier
Williamsburg Oils – the best
QoR Watercolours – the best
Cult Pens – the best propelling pencils and more
Making a Mark – Katherine Tyrrell’s excellent blog for artists
Painter’s Table – offers its own excellent content, and a wide range of links to items on other blogs
Painters on Paintings – many fascinating accounts of paintings which have most influenced individual painters
Painting Perceptions – about perceptual painting, a modern version of realism
WikiArt – the best and largest collection of images of paintings
PubHist – publications on Art History and many paintings
Art Renewal Centre (ARC) – another superb collection of images
Handprint watercolours – Bruce MacEvoy’s vast and comprehensive resource of information on watercolours, notable for its tests of lightfastness and much more
General:
LibriVox – free, public domain audiobooks; the Gutenberg of audiobooks
The Man in Seat Sixty-One – rail and ferry travel worldwide
The Eclectic Light Company 