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Algorithms, distributed systems and engineering ideas

Research options in a browser or build on licensed historical datasets

Recorded engineering talks and a community for video developers

WordPress forms, polls, quizzes, and connected submission workflows

Move project work across visual boards built from lists and cards.

Measure browser page-load and interaction performance with repeatable local or containerized runs.

Quiz funnels with answer variables and fallback text for missing values

Record and share screen and camera videos from browser, desktop or mobile.

Everyday calculations with topic-specific explanations

Subject-aware problem solving with worked steps

Algebra entry with solving, factoring and graphing modes

A notepad that calculates alongside written working

Standard, scientific, programmer and date calculations

Scientific expressions with variables and numerical calculus

A notepad calculator with variables and calendar expressions

Current-limiting resistor calculations for LED arrays

Residential HVAC load, selection and duct calculations

Thermal-comfort models with visible environmental inputs

Cutting plans for sheet, linear and roll materials

Online cutting plans with printable reports

Recipe calculations connected to a brewing batch

Bicycle gearing comparisons with cadence and tyre information

Household carbon arithmetic with visible assumptions

Natural-language calculation beside short notes