The Feynman Lectures Website and Caltech are pleased to present this online edition of The Feynman Lectures on Physics. Now, anyone with internet access and a web browser can enjoy reading a high-quality up-to-date copy of Feynman's legendary lectures. This edition has been designed for ease of reading on devices of any size or shape; text, figures and equations can all be zoomed without degradation.
It translates a subset of Common Lisp to Javascript
+ bignum arithmetic
- no SQRT, SIN, ATAN, FORMAT, APROPOS
- #x and #.r upset the reader
See also the author's blog http://davazp.net/2013/01/04/lisp-to-javascript.html
Web-based simulator of the hp15c calculator. Enhanced version with stack display. Note that contrary to emulators such as nonpareil, this simulator does not produce the same results as the real hp15c.
A nice page of the late Tony Fisher, has interactive tools to design analogue (LC, Butterworth and Chebyshev) and digital (IIR, including Bessel and an additional stopband zero and FIR) and PLL loop filters. The tool (source code is available) also gene
A collection of tools (DNS lookup, ping, traceroute) which can be used from a web browser.
On 2021-03-23, I could not find the tools. Note that this site is related to SolarWinds, who were attacked recently.