This is just an example, the site contains a large number of documents written at MIT.

Currell Berry's collection of software and essays. Includes typographically improved version of the draft ANSI standard for Common Lisp
http://cvberry.com/tech_writings/notes/common_lisp_standard_draft.html

Write him about the typos I found.

100-line Emacs Lisp program to copy passwords to clipboard and remove them after 10s from both clipboard and kill-ring.

Transcription of “The Great Debate”:
John Gustafson vs. William Kahan on Unum Arithmetic
Held July 12, 2016

PDF Tools is, among other things, a replacement of DocView for PDF files. The key difference is, that pages are not pre-rendered by e.g. ghostscript and stored in the file-system, but rather created on-demand and stored in memory.

This rendering is performed by a special library named, for whatever reason, poppler, running inside a server program. This program is called epdfinfo and its job is it to successively read requests from Emacs and produce the proper results, i.e. the PNG image of a PDF page.

Actually, displaying PDF files is just one part of PDF Tools. Since poppler can provide us with all kinds of information about a document and is also able to modify it, there is a lot more we can do with it.

[shaarli save link does not work here under Firefox 45.5.1/Windows or Firefox 51.0.1 (64-bit) on xubuntu, because github does not allow "foreign" JavaScript]

Show the visibility of GNSS satellites.
See https://github.com/taroz/GNSS-Radar for source and options which can be passed via the URL.

Think of Facebook, Whatsapp, Gmail and Skype rolled into one, without the centralized surveillance and control. secushare employs GNUnet for end-to-end encryption and anonymizing mesh routing (because it has a more suitable architecture than Tor or I2P) and applies PSYC on top (because it performs better than XMPP, JSON or OStatus) to create a distributed social graph.