Search results

Technical data and calculations for engineering study

A music-score library with structured browsing

An index of hymn texts, tunes and hymnals

Language classification linked to bibliographic reference

A German-language full-text library and historical reference

Open textbooks for higher-education subjects

Curated learning-resource discovery by discipline

A documentation platform that keeps docs current and readable for AI agents.

Learn and test text patterns with live feedback

Develop mobile illustrations with editable brushes and layered drawing

A biological-data resource portal from SIB

A multilingual encyclopedia with a language-aware search

Related English words for revising a draft

Scholarly search with author, publication and date controls

Structural language properties in a comparative database

An independent reference for Steam catalogue and activity data

British and Irish case law and legislation

Educational collections of historical source texts

A subject-organized reference to Alabama

Regional history connected to Philadelphia's present

English dictionary lookup with explicit usage guidance

Discover peer-reviewed open-access books and publishers

Physical constants linked to units and uncertainty guidance

Spectral lines and atomic energy-level reference data