TESIGN
SAVED

EN · KO

TESIGN / RADAR

No install

All featured apps. 44 items

HOW TO START
More filters
CATEGORY
SOURCE
HOW TO START
TAG
LICENSE
SIGNAL
  1. 31Breakscale's Retry Storm example: a top bar reading 100 requests per second offered, goodput 0/s, errors 100% and 118/s dropped, a canvas with Client → API Server → Database boxes showing the database 99.9% busy, and a handwritten-style explanation below

    Breakscale

    System-design simulator for learners

    Browser system-design simulator: build a topology, load it until it breaks, see why

    Use in the browser
    ★ 2k
    BACK CATALOGEDUCATION · GitHub · MIT · kept 2026.09.14
  2. 32A 3D view inside a Halcyon Video store: blue-and-white fit-out, MOVIES signs, shelves stocked with video cases, a Previously Viewed rack and a CRT television hanging from the ceiling

    Halcyon Video

    3D video store for your media server

    Turns your Jellyfin, Plex or Emby library into a walkable 3D 1990s video rental store

    Use in the browser
    ★ 954
    BACK CATALOGMEDIA · GitHub · GPL-3.0 · kept 2026.09.14
  3. 33The Let's Seal verification portal: a 'Verify a document' heading above a drop zone for a PDF and a field for pasting a SHA-256 fingerprint or proof link

    Let's Seal

    Prove a file is unaltered and dated

    Free web app and open SEAL standard that proves a file is unaltered and existed by a date

    Use in the browser
    ★ 378▲ 94 HN
    BACK CATALOGSECURITY · Show HN · Apache-2.0 · kept 2026.09.14
  4. 34The OpenMouse web control panel showing a connected mouse's information and its DPI and polling-rate settings

    OpenMouse

    Gaming-mouse settings in the browser

    Browser control panel for gaming-mouse DPI and polling rate, no vendor driver needed

    Use in the browser
    ★ 2.8k
    BACK CATALOGHARDWARE · GitHub · AGPL-3.0 · kept 2026.09.14
  5. 35The Bento slides editor running in a browser on the starter deck at bento.page/slides [layout to be confirmed]

    Bento

    One-file slides for presenters

    A PowerPoint alternative in one HTML file; edit, present and share with only a browser.

    Use in the browser
    ★ 5.6k
    BACK CATALOGPRODUCTIVITY · GitHub · MIT · kept 2026.09.14
  6. 36A phone receiving a file from another screen's animated QR stream, showing 130.5 KB/s goodput and decoding about halfway done

    Decimen Optical Transfer

    File transfer with no network

    Send a file up to 64 MB between two devices using only a screen and a camera; no network.

    Use in the browser
    ★ 7k
    BACK CATALOGEXPERIMENT · GitHub · AGPL-3.0 · kept 2026.09.14
  7. 37A GitFut player card — a FIFA-style card with the overall rating and the six stats PAC, SHO, PAS, DRI, DEF, PHY

    GitFut

    Player card for your GitHub profile

    Turns a GitHub profile into a FIFA-style card rated out of 99, embeddable as a live PNG

    Use in the browser
    ★ 2.7k
    BACK CATALOGSOCIAL · GitHub · MIT · kept 2026.09.14
  8. 38The SQL editor panel beside an ER diagram canvas where table boxes are joined by foreign-key lines

    SQL to ER Diagram

    SQL schema to ER diagram, in-browser

    Paste CREATE TABLE DDL, get an interactive ER diagram drawn entirely in your browser

    Use in the browser
    ★ 714
    BACK CATALOGDATA · GitHub · MIT · kept 2026.09.14
  9. 39README example — the original page on the left and, on the right, the same page rendered as if scanned: slight skew, grayscale, warm paper tone and edge shadow

    make-look-scanned

    Make a PDF look like a paper scan

    Makes a PDF look like a physical scan (skew, paper tone, grain); Go CLI or in-browser WASM

    Use in the browser
    ★ 940▲ 155 HN
    CROSS-SIGNAL Show HN + GitHubPRODUCTIVITY · Show HN · GitHub · AGPL-3.0 · kept 2026.09.14
  10. 40The PDFx viewer — a canvas where each document is a horizontal strip of page thumbnails and documents stack vertically

    PDFx

    Bundle many PDFs into one valid PDF

    Bundles many PDFs into one file that is still a valid PDF; its viewer splits them back

    Use in the browser
    ★ 1.1k▲ 1 HN
    CROSS-SIGNAL GitHub + Show HNPRODUCTIVITY · GitHub · Show HN · MIT · kept 2026.09.14
  11. 41Solar Wanderer: Earth seen from the Moon's surface, with the Moon info panel (Chinese UI)

    Solar Wanderer

    Real-time 1:1 solar system, no install

    1:1 real-time solar system in the browser, driven by NASA JPL ephemerides; phone-friendly

    Use in the browser
    ★ 764
    BACK CATALOGEDUCATION · GitHub · MIT · kept 2026.09.14
  12. 42Design Studio AI workspace: a 'What should we create?' prompt box in the centre, six starter templates below.

    Design Studio AI

    Design workspace for people and agents

    Lets people and agents edit the same web, slide, 3D and video designs.

    Use in the browser
    ★ 227
    DESIGN · GitHub · MIT · kept 2026.09.14
  13. 43PDF Pocket Tools on itch.io: free-demo note and feature list left, two app screenshots right, a Buy Now $1.00 button below.

    PDF Pocket Tools

    PRODUCTIVITY

    Merges, splits, rotates and reorders PDFs from one offline HTML file.

    Use in the browser
    ▲ 2 HN
    NEW 1h OLD WHEN SEENPRODUCTIVITY · Show HN · kept 2026.09.14
  14. 44Programming Museum playground page: 'The Children's Playground' heading on black, a number-guessing game below.

    Programming Museum

    EDUCATION

    Hangs real, runnable source code in frames you walk past room by room.

    Use in the browser
    ▲ 5 HN
    NEW 0h OLD WHEN SEENEDUCATION · Show HN · kept 2026.09.14