// tools
Browser-based utilities for research, chemistry, productivity, and
fun. No install needed.
count: 13 tools
stack: HTML · JS · WebAssembly
status: ● all operational
category_01
AI & Research
Chat with GLM-5 (pre-configured, free!), GPT-4o, Claude, Gemini,
Groq and OpenRouter — all in one place with full conversation
history.
Search and discover research papers via Semantic Scholar and
arXiv APIs. Filter by field, year, and citation count.
Full-featured diagram editor with live preview, VS Code-style
editing, syntax highlighting, and multi-format SVG/PNG export.
category_02
PDF & Media
Compress, convert to images, merge multiple PDFs, and split by
page range — all in one unified interface, runs entirely in your
browser.
Browser-based audio recording, editing, and processing with
effects, filters, and a guitar tuner.
Camera diagnostics with live resolution/FPS stats and snapshots
— plus an air guitar you strum through the webcam
(MediaPipe hand tracking).
Download YouTube videos and audio in multiple formats (MP4, MP3,
WEBM, WAV, FLAC) and qualities up to 4K. Supports playlists and
batch downloads.
category_03
Chemistry
Interactive 3D visualization of chemical molecules from PDB and
SDF files using WebGL.
Explore elements with detailed properties, electron
configurations, isotopes, and spectral data.
Balance chemical equations automatically with step-by-step
matrix algebra explanations and stoichiometry.
Calculate pH, pOH, and concentrations for strong/weak acids and
bases, including buffer solutions.
Calculate molecular weight from chemical formulas with
per-element breakdown and molar mass reference.
category_04
Games & Misc
Fun chemistry-themed browser games, element quizzes, and
reaction simulators to learn while playing.
Convert between scientific units: length, mass, temperature,
energy, pressure, and more with high precision.