Here are some tools that I host. They are mostly meant for my own use but feel free to use them.
Please don’t abuse any of these, I’ll be prompt to remove public access if my monitoring scripts report something unusual.
 https://zerobin.zertrin.org — An instance of the popular minimalist client-side encrypted pastebin from sebsauvage.
 https://0bin.zertrin.org — An instance of the remake of zerobin by Sam et Max.
Online TeX equations editors
 https://zertrin.org/texeditor — Easy TeX editor allow to build TeX equations easily.
 https://zertrin.org/mathjax — Another online TeX equation editor that additionally support the Markdown syntax.
 https://zertrin.org/timo-tools — The collection of tools from Timo (in French)
 https://zertrin.org/webplotdigitizer — A tool to digitalize data from plots images.
 https://zertrin.org/randomstringtocsscolor — Enter any string and it will show you how CSS will interpret it as a color. Useless thus essential!
 https://zertrin.org/cyberchef — The Cyber Swiss Army Knife. Allows to perform many conversion operations directly in the browser, in the form of a “recipe”.
-  from sebsauvage/zerobin on Github — project page — license.
-  from sametmax/0bin on Github — WTF licence.
-  from 123jimin/EZ-web-TeX-editor on Github.
-  from kerzol/markdown-mathjax on Github — license
-  from lehollandaisvolant.net/tout/tools — public domain.
-  from ankitrohatgi/WebPlotDigitizer on Github — project page — license GPLv3.
-  from TimPietrusky/randomstringtocsscolor on Github.
-  from gchq/CyberChef on Github — Apache-2.0 License.