apps
Software that needs no server
Browsers can decode audio, encode images, compress archives and do exact arithmetic. These do all of that on your machine — the files you open are never uploaded. Each has its own page, and they all open as windows inside the desktop.
- TodayThe whole day on one screen — weather, what's coming up, and what's new, pulled together from the apps that usually keep to themselves.
- TerminalA real command line in the browser, where every one of the site's utilities is also a command.
- FilesA file browser for the site's own tree and for folders you drop in from your machine.
- GuideA field guide to everything here — grouped by what you're actually trying to do, with a concrete example for each tool and a button that opens it.
- StashA shared bank the tools pass work through — the seam that turns a drawer of separate utilities into one system.
- SettingsTheme, behaviour toggles, a storage report, and a one-file backup of everything the OS remembers.
- ClockWorld clocks you choose, a lap stopwatch, and drift-free timers — all in one window.
- TasksA three-column board — to do, doing, done — that lives in your browser and takes input from every other app.
- SnippetsThe code you keep reaching for — highlighted, searchable, and one keystroke from the clipboard.
- HabitsA row of squares per habit, a tap for today, and streaks that count themselves.
- FlashcardsFlashcards with real spaced repetition — the deck decides what you review and when.
- LedgerOne line per expense, integer cents, and a month that adds itself up by category.
- JournalOne page per calendar day — today always open, history readable, streaks counted.
- TypingType the passage, watch the words per minute — measured the standard way, stored locally.
- EventsBirthdays, renewals, deadlines — one list, sorted by how soon, counting itself down.
- ChatLive rooms with whoever is on the site right now — no account, no history kept.
- BookmarksLinks you actually keep — pasted in, tagged, searched, and exported as Markdown.
- ReaderOne calm place for what's new across the web — sixteen sources, five categories, always fresh.
- EditorA code editor with real syntax highlighting for the languages you are most likely to be pasting.
- SandboxRun JavaScript in a Web Worker, safely isolated from the page, and see the output immediately.
- NotesMarkdown notes kept in your browser's storage, with a live preview and no account.
- DeckWrite slides in Markdown, present them full-window, and print or export to PDF — all in the browser.
- MonitorWhat this page is actually doing: memory, frame timing, network requests and storage use.
- Image StudioResize, crop, convert and compress an image on your own machine, with EXIF orientation handled properly.
- Audio StudioTrim, fade and normalise audio in your browser, then export a correctly-formed WAV.
- PaintA small raster paint program — pencil, shapes, flood fill and adjustments — with exact undo.
- ArchiveMake and open ZIP files entirely in the browser, using the platform's own compression.
- Media InfoRead what a media link points at, and pull the tags and artwork out of local audio files.
- CalcA calculator with exact decimal arithmetic, unit conversion and a paper tape — where 0.1 plus 0.2 is 0.3.
- ConvertMove a data file between JSON, YAML, CSV, TOML, XML, JSON Lines, .env and query-string form.
- Regex LabA live regular-expression workbench: type a pattern, toggle flags, and watch the matches and capture groups light up in your test string.
- Diff ViewerCompare two texts and see exactly what changed — line by line, with the edited words picked out inside each changed line.
- Crypto & HashA security toolbox: hash and HMAC text, mint UUIDs, tokens and passphrases from a real random source, and move text through base64 and hex.
- SQL PlaygroundA full SQLite database running in your browser through WebAssembly — write real SQL, run it, and read the results, with a sample database to start.
- SqueezeRecompress an image with the Squoosh WebAssembly codecs — AVIF, WebP and MozJPEG — and watch the file size fall against the original.
- Shader LabA live GLSL shader playground running on your GPU — write a fragment shader and watch it render in real time, ShaderToy-style.
- Local AIA real machine-learning model running in your browser — classify sentiment, sort text into labels you invent, or summarize a passage, all locally.
- PythonA real CPython 3 interpreter compiled to WebAssembly, running in your browser — write Python, run it, and read stdout, tracebacks and the last value.
- GraphvizThe real Graphviz layout engine, compiled to WebAssembly — write a graph in DOT and watch it lay itself out as an SVG, live.
- PDF ToolkitMerge, split, rotate and delete pages in a PDF — entirely in your browser, with the file never leaving your machine.
- BeatlineA step sequencer with eight synthesized drum voices — build a beat in the browser and export it as a WAV.
- SubtitlesConvert subtitles between SRT, WebVTT and ASS, and fix timing that drifts or arrives out of sync.
- PlayerA music player for the files already on your machine — tags, cover art and all.
- nginxBuild an nginx server block, with the directives that have to accompany the one you actually wanted.
- systemdGenerate a systemd unit file, including the sandboxing that is off by default and costs nothing to turn on.
- composeWrite a docker-compose file with the YAML quoting that silently changes meaning already handled.
- TypeA font inspector: drop a font file and read its metrics, tables and glyph coverage — and see it rendered live.
- ThemerDesign a colour theme once and export it for VS Code, Windows Terminal, iTerm2, Alacritty and CSS.
- DriftfieldAn inertia space shooter: drift through a field of asteroids that split as you shoot them, with a saucer that leads its shots.
- KineticA physics breakout: a paddle, a ball, and layered glass bricks that crack in stages — with a comet mode for long rallies.
- WispA maze-chase game played in the dark: you are a mote of light collecting flux while four hunters close in.
- StrataStack falling blocks and clear full rows — the classic falling-block game, with an original twist and modern rendering.
- MinesweeperMinesweeper, played fairly: the first click is never a mine and hints are real deductions.
Read the how-tos · There are 47 smaller utilities too — regex, JSON, colour, cron, timestamps and the rest.