Open tools for
modern airline retailing.
AeroToys is a small collective of airline technologists releasing the missing infrastructure for modern airline retailing — open source where forking helps, community-hosted where one source of truth matters more.
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One email per ship. No marketing, no spam.
Six projects. One mission.
The Order Database and Rules Engine are open-source and free to fork — that's how infrastructure should work. The Tax Engine and Schedules Data are community-hosted with free APIs — that's how shared truth has to work. Shopping Engine and Stock Keeper are the next two we're building, in active development.
Open Order Database Engine
An open-source, document-native database engineered for the shape and scale of airline offers and orders.
Apache 2.0 · free to fork & deploy
Read the docs
Open Tax Engine
One canonical source of airline tax rules — community-governed, with a free calculation API for everyone.
Free API · airline-governed rules
Explore the Tax Engine
Open Rules Engine
A free, visual rules engine for airlines — flow-DSL graphs, typed node sockets, run it embedded or call the hosted instance.
Apache 2.0 · free to deploy & host
Open RuleForge
Open Shopping Engine
A free, open shopping engine — turn origin/destination/date queries into airline offers.
In active build · early access available
Get early access
Open Stock Keeper
Native inventory counters for flights, ancillaries, lounges, and partner services — chainable and real-time.
In active build · early access available
Get early access
Open Schedules Data
One canonical schedule corpus — airlines file SSIM directly, the rest of the industry gets a free, normalized API.
Free API · airline-filed data
See Schedules DataDifferent problems need different open models.
A database benefits from being forkable — every airline runs it differently anyway. Tax rules and schedule data are the opposite: they only work if the whole industry trusts the same version. We picked the model that fits each tool.
Open by default
All code is open for inspection and contribution. Apache 2.0 and MIT throughout. No black box, no proprietary gates.
Airline-governed
Each rule, each tax, each schedule is owned by the airlines that file it. Peer airlines verify. No vendor middleman.
Free APIs
The Tax Engine and Schedules Data are hosted by the community — free to consume, no API key gating, no per-call fees.
One database, many tools
The Open Order Database Engine powers all three pillars. Sub-millisecond reads, replication, sharding — Apache 2.0.
Modern airline retailing
Aligned with NDC/Order shapes used in our offer/order management work. Ready for offer-time logic, not just ticketing.
A simple two-loop economy.
Airlines contribute the rules and data. Everyone gets the tools and APIs for free. An optional managed hosting tier covers infrastructure costs for those who want it run for them.
Airlines contribute
Airline teams claim the data they already manage — schedules, taxes, fare rules. They propose updates. Peers approve. Every change is audited.
Community verifies
Every record cites primary sources. Test scenarios prove the logic. Status tags signal trust: Verified / In progress / Placeholder.
Free for everyone
Free APIs for the Tax Engine and Schedules Data. The Order Database Engine is downloadable and embeddable — Apache 2.0.
Optional managed
Don't want to host yourself? Subscribe to the managed endpoint. Priced just to cover hosting + maintenance — no margin, no investors.
Subscribe for release notes,
RFCs, and contributor calls.
One email when something ships. One when we open an RFC. One when we need an airline reviewer. No spam, no marketing funnels.
Already in the loop? Get in touch directly if you want to contribute a country, a schedule transformation, or a database benchmark.
We're also exploring an open
Offer & Order Management System.
A side project. A research effort. A long road. We believe the three tools above need to land first — but if you want to help shape what a community-built OOMS looks like, the door is open.
Read the proposal
A call to the airline community
If your airline cares about open standards in modern retailing,
we want to hear from you.
Adding a country your tax team already knows takes hours, not weeks. Filing your airline's SSIM directly takes minutes. The data is yours — we just put it in the right shape.