Lambda the Ultimate

See http://olabini.com/blog/?s=ioke.

Whiley

I have tried to classify my pointers according to the style of articles you'll find in them.

First, some established languages blogs; they tend to contain less design-related posts and more usage-introduction posts, but their archive are sometimes full of useful discussions.

• The Go Programming Language Blog. Certainly not the most innovative out there, but it's still good to see what some old-school C people are doing now. I appreciated the posts on error handling, gofix and slices. Less on-topic but tangentially related, Russ Cox's blog.
• Factor : a practical stack language. From the designer and implementer of Factor. Now much active nowadays, but dig for interesting down-to-earth implementation discussions.
• The Racket blog; not much design per se, but interesting release notes and generally ongoing research. The just-announced blog of Sam Tobin-Hochstadt may or may not become an interesting complement (plus JavaScript standardization stuff, also relevant). The now-extinct The Little Calculist blog by Dave Herman also has Scheme-design stuff..

Less concrete stuff about unfinished languages, ongoing design processes, meditation...

• Project Fortress's blog
• Room 101, Gilad Bracha's Newspeak blog. Polemic thought-provoking stuff from a dynamic languages fanatic. A must read (even if you disagree).
• Ensō Blog, a blog on William Cook's recent, quite nebulous new language idea. See also William Cook's own blog.
• Awelon blue, by our very own dmbarbour. Maybe a bit hard to enter if you haven't followed the whole RDP stuff. There used to be an introducory c2 wiki page, but it's undergoing revision.
• Structural Insight by our equally own John Stutt.
• Bob Nystrom's journal

More implementation-related blogs, mostly about JIT for dynamic languages, because that's what's hot these days:

• Wingo log by Guile's maintainer Andy Wingo. Some excellent introductory posts about V8 internals. A must read.
• Chris Leary's Honest to a segfault
• David Mandelin's blog, mostly about the various JS engines at Mozilla

Finally, if you're into (type) theory:

• Epilogue for Epigram, Conor McBride blog about the dependent system Epigram
• QA9, Aaron Stump's blog. Touches lot of topic, its own language Guru, and sometimes (but not so often) the ongoing Trellys effort.
• mmmodularity!, by Scott Kilpatrick.
• It is not strictly language-design-related (difficult to draw a line between language-design and interesting posts about programming languages), but Bob Harper's Existential Types is also interesting in the strongly opinionated kind.

I must have done something wrong since my language fails to attract any interest. ;)

The ParaSail blog is a surprisingly thorough record of the design decisions and tradeoffs in a relatively feature-rich language built from the ground up. The blog doubles as an open design process and a written history, so one can find material on both process and design, depending on what you're looking for.

I have a blog at Artima.com that I used to contribute to frequently when I had more free time on my hands.

Much more well known language designers than myself also have blogs at Artima.com like Guido van Rossum (who later moved to Blogger) and Martin Odersky.

The Grace project has a relatively low traffic blog where we are discussing the language design and project organisation from time to time.

http://lamp.epfl.ch/~magarcia/ScalaCompilerCornerReloaded/

with flexibe infrastructure for compiler plugins included.

Miguel