Test vocabulary with bidirectional translation exercises covering 12 categories. Practice over 4,000 words. Choose 10, 20, or 30 questions. Receive feedback and error correction. Track progress with streak records.
Access a comprehensive catalytic database for product lookup. Manage purchase orders to track inventory and transaction dates. Calculate custom margins to determine profit when selling to .
Search npm packages in real time with filters for quality, popularity, and maintenance. View full READMEs with markdown and syntax highlighting. See version history, release dates, and dependencies for each package.
Learn a language through audio files from native speakers. Play 3 levels of games and 3 types of quizzes. Search a database with cultural notes, audio, video, and images. Practice listening and comprehension with interactive content.
Generate in-silico protein digestions from UniProt data. Define enzymatic and modification conditions. Calculate peptide lists with isotopic profiles and fragmentation. View protein sequences, features, and hydropathy plots.
Learn Latin with dictionaries featuring over 50,000 entries and 20,000 simplified explanations. Access declensions and conjugations for entries. Parse Latin words and study Allen and Greenough's grammar.