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Free conversion between lossless and lossy audio formats

Real-time voice translation for video calls

An open-source Raspberry Pi audio player

A GNOME audio converter using GStreamer format support

Video assembly with audio extraction and dubbing tools

Engineering formulas with live diagrams and worked guides

Engineering calculations with steps and interactive models

Personal emissions estimates with quick and detailed inputs

Lossless audio and CUE-sheet conversion tools

A subscription audio collection for children

Convert folders and extract audio with optional filters

Create quizzes, polls, surveys, forms, assessments, and calculators.

UK home-energy research with calculators and regional tools

Arithmetic, finance and practical calculation worksheets

Formula calculators with selectable input units

Construction and everyday calculations with searchable tasks

A catalogue of practical and specialist calculations

Subject calculators and a custom calculator builder

A searchable catalogue of calculations and conversions

A keypad calculator with clear, memory and percentage controls

Statistical tests, power analysis and descriptive tools

Focused browser calculators for statistical questions

Construction layouts, cut templates and dimension calculators

Browser tools for beam and structural calculations