About

A small team that read
too many schedule files the hard way.

We worked at airlines, GDSs, and travel-tech startups. We watched the same scene play out at every one: a couple of engineers writing their fourth schedule parser, a coordinator raising a ticket to ops, a CTO asking "why don't we just buy this." So we're building it.

Why we're building it

One product, done right, exposed to every workflow.

The aviation industry runs on schedule data, and the way the industry exchanges schedule data hasn't fundamentally changed in decades. The conventions are real, the edge cases are common, and the answer most teams reach for is "we'll write our own parser." Then they do, and the bill compounds every year.

Active Flights is a bet on a different answer: unlock the SSIM files teams already have — privately, on their own machines, and deterministically. Get the foundation right — fast enough, complete enough, generous enough about the real-world quirks that show up in actual feeds — and every workflow built on top of it gets faster. The validation page, the inspector, the compare view, the export — they all sit on the same engine.

So we're building it. One desktop app, built carefully, that earns its place at the bottom of every schedule workflow your team has. The kind of foundation that makes everything sitting on top of it better, too.

The product is that foundation, plus the everyday tools around it that let a coordinator, an engineer, an ops planner, and an owner each work the same schedule — on a tool they own and run locally, with answers they can reproduce.

How we work

The bets that shape every release.

Foundation first

The fastest way to ruin a product like this is to half-build the foundation. We over-invest in correctness and reliability; the UI follows.

Deterministic by design

Schedule work needs answers you can stand behind. The engine is deterministic — same file in, same answer out, every output traced to a field in the spec. Connect your own AI assistant to ask questions (a read-only, on-device MCP integration); the answers still come from the engine, never a model's guess.

Local & private

Your schedule data runs and stays on your machine. The pipeline makes no network calls; the app only touches the network to verify a licence or check for updates — never your data.

No half-built UI

We'd rather ship one less feature than ship a feature without focus rings, empty states, and a story for failure.

Owned, not rented

It's a desktop app you install and own, not a service you log in to. Open the file, get the answer — on macOS, Windows, or Linux.

Calm density

The product looks the way it does because schedules are dense data and dense data deserves quiet design. No tricks, no chrome, just legible information.

Early Access Preview · Coming 2026

Be there from day one.

SSIM Toolkit ships under a free, time-boxed Early Access Preview in 2026. Drop your email and you'll hear from us when it's your turn.

SSIM Toolkit is made by Active Flight Labs, Inc.