Simon Willison’s Weblog

24th January 2009 - Link Blog

google-mobwrite. Neil Fraser’s terrifyingly clever differential synchronization algorithm (for SubEthaEdit-style collaboration over the web) is now available as an open source Python and JavaScript library.

Posted 24th January 2009 at 11:55 pm

Recent articles

DeepSeek V4 - almost on the frontier, a fraction of the price - 24th April 2026
Extract PDF text in your browser with LiteParse for the web - 23rd April 2026
A pelican for GPT-5.5 via the semi-official Codex backdoor API - 23rd April 2026

This is a link post by Simon Willison, posted on 24th January 2009.

collaboration 9 google 405 javascript 751 mobwrite 2 neil-fraser 8 open-source 302 python 1245 subethaedit 2

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe