Showing 21–40 of 1,000 ranked alternatives.
Kamyar Ghandi
Design lenses, simulate optics, control components
Model 2D lenses and mirrors with precise control over shape and placement. Design aspheric surfaces and perform geometric ray tracing. Conduct sequential and non-sequential analysis. Calculate front and back focal lengths and principal surfaces.
Xavier Daxhelet
Optical calculations for engineers and students.
The app calculates the refractive index of transparent materials based on wavelength. It also computes light transmission angles, reflection and transmission coefficients, critical angle, and Brewster’s angle.
YOYASOFT LLC
Learn , practice writing, scan text
Learn to write nearly 3000 with detailed stroke instructions. Access covering HSK levels 1-6 and AP exams. Use free OCR to translate text. Download English- and -English dictionaries for quick reference. Link to news websites for context.
Marco Neises
Explore cities, museums, and trails
Listen to audio guides for cities, museums, hiking trails, and natural sites. Explore stories and facts about landmarks and phenomena. Download GPS-guides and outdoor quizzes for offline use.
Prepia Inc
Study CNA questions and track progress
Study for the CNA with questions, adaptive learning plans, and an simulator. Instant feedback is provided after each question. Track progress and review topics including basic nursing care, resident safety, and specialized care.
United Soft Media Verlag GmbH
Explore celestial objects and learn about them
Explore celestial objects like planets, moons, asteroids, and stars. View detailed information about each object. Track their positions and movements over time. Learn about constellations and their changes throughout the year.
Bedri Can Aktan
Practice tests and track progress
Study for the G1 driver's license exam with practice tests based on the 2025 MTO Driver's Handbook. Review traffic signs and rules of the road. Take simulated exams with instant feedback. Track progress and revisit questions for improvement.
Hassan Taleb
Write and run code anytime
Write and run code with daily credits, import files, open Playground files, and share code or text. Generate code snapshots in PNG, JPEG, HEIC, or PDF formats.
University of Oklahoma (Information Technology)
Report severe weather in real time
Report precipitation types and locations in real time. Submit observations via photo or text. View maps showing reported weather data. Receive notifications about severe weather events. Track personal observation history.
Michel Fortin
View colors through color blindness simulation
Lets users view colors as they appear to people with color blindness. Point the camera at objects to see color variations. Adjust color settings to enhance accessibility in designs. Analyze color choices in images for better understanding.
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