Tools
Simple utilities to help you take notes, sketch ideas and keep track of what you learn.
A plain text editor that saves as you type.
A drawing canvas for sketches and quick diagrams.
Format, check and explore JSON and XML without leaving the browser.
Decode a token's header and claims to see what it actually carries.
Score an SPDX or CycloneDX SBOM against the NTIA minimum elements.
Write practice questions and test yourself.
Timed study sessions with regular breaks.
Plan your courses and track what is due.
Keep the code examples you want to revisit.
Tag and search everything you have written.
Review key ideas with spaced repetition.
See how far you have come across your courses.
Record a thought when typing is too slow.
Collect sources and format citations.
Measure the hours you put into each topic.
Everything here is saved in your browser, on this device only.
