Mike Ammerlaan

I love building software, and I love building software platforms.

These days I do that at Bendyline, my small software company, where I make honest, free tools like Gezel, DocBlocks, and Qualla. Before that, I spent more than 25 years at Microsoft and Mojang on developer platforms, from SharePoint and Microsoft 365 to the Minecraft creator platform.

Mike standing in front of his Winnebago, parked in the doorway of a towering wooden building under an “Entering Game of Thrones” sign
Me and the Winnebago, out seeing more of the world.

Bendyline

Bendyline is my company, and it's where my passion projects live. I build free software with no tracking, no dark patterns, and no fine print. Your work stays in plain files that you own, and the foundations are open source for anyone to build on.

Gezel's home screen, where the Meester has turned a bakery owner's request into a plan for three AI helpers

Desktop app · Early preview

Gezel

Hand off a job tonight. Review it in the morning.

A crew of AI helpers, including a researcher, a writer, and a developer, working on your own computer. They leave reports and suggested changes waiting for you, and your files only change when you say so.

gezel.com ↗
The DocBlocks editor: a welcome document with a diagram, beside a rail of slide previews

Web, desktop, VS Code & CLI

DocBlocks

Write once in Markdown. Publish it anywhere.

A local-first editor where one Markdown file can become a Word doc, a PDF, a slide deck, an e-book, or a video. No account and no lock-in: your documents stay plain .md files.

docblocks.com ↗
Qualla's Flow screen, “Swipe a stream of stories,” over a sunset sea

Web

Qualla

Visit the world through stories.

An endless stream of stories about places around the world, drawn from Wikipedia and Wikivoyage and retold with maps, photos, and narration. No account and no tracking. Just wander.

qualla.com ↗

Open-source foundations

  • Squiggly SquareDocument format

    A small extension to Markdown that turns headings into slides, photo grids, maps, and charts, and converts to DOCX, PDF, EPUB, PPTX, and more. It powers the DocBlocks editor.

  • Molen3D engine

    An AI-legible engine for games, visualizations, and interactive 3D experiences, with a headless kernel and dev loop an agent can drive end to end.

  • Gezel PlatformCLI, SDKs & API

    The engine behind Gezel, open for you to build on. Drive it from the command line, connect your own software, and package workflows as apps your team can install.

  • gezkFile format

    An open format for packaging reference documents with full-text and vector indexes in a single portable file.

Build with Bendyline on YouTube

Demos, walkthroughs, and experiments. Many of my posts have a companion video, so pick whichever you prefer. Here's a good place to start:

Subscribe

Before Bendyline

I spent more than 25 years at Microsoft and Mojang, mostly on developer platforms: the APIs, tools, and programs that let other people build.

  1. Mojang Studios

    Minecraft creator platform

  2. Microsoft 365

    Developer ecosystem marketing

    • As director, led developer marketing for Microsoft Teams, Microsoft Graph, SharePoint, and the broader Microsoft 365 platform.
    • Managed executive keynotes and end-to-end developer presence at major conferences, including Microsoft Build.
    • Launched the Microsoft 365 partner program with top ISV partners.
  3. Bing Maps & Yammer

    Maps platform and integration

    • Built APIs and platform for Bing Maps, including the mapping platform within Windows.
    • Led the technical integration of Yammer into Microsoft after the acquisition.
  4. SharePoint & Excel

    Platforms people still build on

  5. Aces Game Studio

    Combat Flight Simulator 3 & Fighter Ace

    • Program Manager for the UX, several in-game experiences, and the tooling and platform for CFS3.
    • Ran Fighter Ace 3 with a partner developer.

When I'm not building software

Out and about

I like to "camp" in my RV. The Winnebago lovingly referred to as "The Party Wagon" gets me out to see more of the world, and it's also quite the project, unfortunately. I'm always happy to trade road-trip spots and repair stories.

Stuff I built a long time ago

A couple of DOS games from back in the day, still playable if you're feeling nostalgic:

Home base

Sammamish, Washington, just east of Seattle. Naturally, Qualla has some stories about it.

Reach out by email or Bluesky. I'm always up for a conversation about platforms, developer tools, local AI, or RVs.