Learncroc
Short, playable lessons with spaced review, built from the docs you must know
Emerged finds new products worth a look, daily — what’s new today
learningto/pass
Free, visual Google interview prep with in-browser Python and AI feedback
It covers the data structures and algorithms rounds big companies still run, for free, for candidates who cannot justify a LeetCode or NeetCode subscription.
learningto/pass is a free practice site for Google-style coding interviews at L4 to L6. It covers 16 topics across data structures, algorithms, Big-O and system design basics, each with interactive visualisations, a Python editor that runs in the browser with tests, AI feedback on solutions, and a skill-tree path with progress tracking. No signup is needed to start. The Show HN drew 41 points and 54 comments, including notes on mobile bugs the creator is fixing.
More like this
LearnHarness
A desktop tutor that starts by finding where your understanding stops
C
Concepts
Nineteen ML and search explainers you learn by dragging the inputs around
AutoResearch
An open pipeline from ML research idea to reviewed, traceable evidence
KnowNote
Ask questions of your own documents on your desktop, with every answer cited
Flide
Exact, shared-context inference server for small Jev-style decision models