04 Code · Apps and open source

Tools we built for ourselves. Now yours.

Run The Wall trains, makes apparel, builds equipment and writes code. These three started as tools for our own work, and we still use them every day.

  • Constly on Windows: a document called Writing that stays yours, rendered as it's typed
    New in 4.12

    Markdown editor

    Markdown that becomes the page. Write plain text, watch the finished document appear as you type.

    Native on

    • macOS
    • Windows
    • Linux
    • Free to use
    • Renders as you type Marks melt away once your cursor moves on.
    • Saves only what you changed One edited word is one line in git diff.
    • PDF, Word and more A PDF made in the app, plus HTML, Word and EPUB.
  • Open-source driver

    Put your USB label printer on Wi-Fi.

    Runs on

    • Raspberry Pi
    • Any Linux
    • Free · MIT
    • USB in, Wi-Fi out A Raspberry Pi shares the printer you already own.
    • No driver on any device It shows up as AirPrint and IPP Everywhere.
    • Even from another office Over a VPN, add it by the Pi's address.
    • stars16
    • forks4
    • releasev1.3.6
    • licenceMIT
  • PROGRESS on iPhone: a Level 1 trick marked complete, and the screen for recording video proof

    Training app

    Every trick you land at the wall, proven on video.

    On

    • iPhone
    • Android
    • 150 tricks, 7 levels From your first safe landing to Level 7.
    • Prove it on video Post a clip and your coach approves it.
    • Your public profile Every trick you've landed, in one link.

Latest

What shipped lately

  1. 20 Oct 2026

    Constly4.12.0

    A slash menu for quick inserts, pictures you can paste or drop in, GitHub callouts, and numbered headings for exports.

    What's new
  2. 16 Oct 2026

    PROGRESS150 tricks

    Swivel Bailout joins Level 2 and Wall Run, reaching the top, joins Level 3, so the curriculum now has 150 tricks.

    See the levels
  3. 4 Oct 2026

    TSPL label driverv1.3.6

    The driver now sends print jobs only to a real printer port, never anywhere else.

    Release notes
Sergei at the Run The Wall front desk in Brookvale, an iMac beside him
Run The Wall · Brookvale, NSW

Why we build

Small tools, built to last

Three rules for everything we ship.

  1. We use it before you do

    Each tool started as a fix for our own work: writing, printing labels, tracking students. It earns its place with us first.

  2. Fixed in the open

    Issues and roadmaps are public on GitHub for Constly and the TSPL driver. Report a bug where everyone can see it get fixed.

  3. Free where it can be

    The TSPL driver is MIT licensed, and Constly is free to use with every feature unlocked.