Showing 101–120 of 1,000 ranked alternatives.
Pignology, LLC
Learn morse code at 20 WPM
Learn morse code using the Method, which trains reflexes at 20 WPM. Practice with customizable speed settings. Track progress with repetition and accuracy metrics. Receive feedback on correct and incorrect responses. Export progress reports.
Ronald Nicholson
Decode code audio into text
Decode code audio into text. Display audio spectrum and tone amplitude graphs. Adjust narrow band audio filter between 400-1600 Hz. Set WPM speed for dot/dash detection. Configure tone frequency thresholds. Export decoded text.
Oxy Foo
Coding with interactive exercises
Coding through interactive exercises in Python, SQL, HTML, CSS, and JavaScript. Practice coding without lectures or subscriptions. Track progress and at your own pace. No experience required.
Daniel Reicher
Play, learn, and solve puzzles
Play games that challenge decimal-to- conversion skills. Compete with friends and track progress on leaderboards. Learn system fundamentals and improve mental math abilities. Share high scores and access a global community of players.
Apple Inc.
Learn to code with interactive puzzles
Learn to code and build apps through interactive puzzles and guided lessons. Solve challenges to understand and SwiftUI. Experiment with coding samples and explore unique coding experiences without prior experience.
Yurii Kriuchkov
Explore , , and microexpressions
Learn to interpret gestures, postures, and subtle movements that reveal a person's true feelings. Identify microexpressions to detect deception. Access detailed explanations and examples of psychological concepts.
Sajed Nahian
, code, and practice online
Offers interactive to help users master programming. Practice exercises anytime, track progress, and access free tutorials without needing a computer. Set learning goals and review concepts through structured and quizzes.
SpriteBox LLC
Learn to through puzzle challenges
Teaches basic programming concepts through puzzle gameplay. Players guide a robot to light up tiles by using commands and logical sequences. Includes levels designed for K-12 learners to develop problem-solving and procedural thinking skills.
Wai Chin Ng
Learn letters, sounds, and animal words
Teaches recognition through animal sounds and visuals. Includes interactive elements with voice and music. Allows children to match letters with corresponding animal words. Features a playful learning environment for early readers.
Perfectrix Technologies Private Limited
Memorize words with flashcards and quizzes
Learn GRE vocabulary through an efficient memorization method. Review flashcards with spaced repetition. Track progress and adjust study sessions. Test knowledge with quizzes and receive feedback. Export word lists and set custom learning goals.
Stepic Inc
Java, Python, and other languages
Programming languages such as Java, Python, Kotlin, JavaScript, Go, and SQL. Complete courses and projects to build real-world skills. Track progress and access detailed explanations for exercises. Earn certifications upon course completion.
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