Tetris 7‑Bag Randomizer Viewer – Online Opening Practice
Simulate the 7‑bag randomizer to see upcoming piece sequences. Practice your opening for competitive Tetris.
UD5 Toolkit
Simulate the 7‑bag randomizer to see upcoming piece sequences. Practice your opening for competitive Tetris.
Log practice sessions, note the tunes played, metronome BPM, and duration. Monitor progress on the pipes.
Learn to aim a signal mirror by aligning a virtual finger and target. Simulates the retro‑reflective mesh technique. Practice before you need it.
Randomly displays behavioural interview questions. Record your answer, review later. Private practice tool.
Hear a word spoken by browser TTS and type the spelling. Choose difficulty or paste your own list. Great for kids. Local only.
Drag words to the correct position in a sentence using in, on, at. Visual feedback.
Play random Morse characters at configurable speed. Learn with Koch or Farnsworth method.
Use your keyboard or mouse as a straight key. Hear the tone and see the dots/dashes. Perfect for learning CW. Local.
Generate and print custom calligraphy practice sheets with adjustable x-height, slant angle, and base line. Perfect for copperplate or Spencerian.
Randomly generated subnetting questions. Calculate network address, broadcast, and usable range. For CCNA prep.
Practice calculating network ID, broadcast address, and usable IPs from a random IP/CIDR combination. Instant feedback and score tracking. Perfect for CCNA prep.
Type a passage and see it appear in a realistic cursive font. Helps connect handwriting to digital text.
Generate a random HTML/CSS card with different box model properties. Inspect and guess the size. For learners.
Set a 20, 30, or 45‑minute countdown to simulate a technical interview. Hidden/unhidden. Boost your prep.
Enter text and generate the corresponding Morse code audio beeps. Adjust speed and tone. Great for learning and practicing CW. No download.
Practice sending Morse code using a virtual straight key. Visual feedback and audio tone. Learn timing and proper fist.
Shows a random short word and displays animated ASL fingerspelling letters. Type what you see. Improve receptive skills.