plan33
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Software company

Products we run. Software we build for you.

plan33 is a SaaS provider and a custom software development company — we ship our own products, and we build software for teams who need a partner who can do the same.

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Abstract grid representing plan33's product and services split

Our products

SaaS platforms we build and run ourselves — see what's live today.

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Custom software

A development partner for teams who need software built to their spec.

How we work

Products

What we run

Two products, built and operated by the same team you'd be hiring for custom work.

All products

eskayscience

Exam-board content, organised the way students actually study.

Education

gamer433

Around 100 free browser games. No install, no account required to play.

Games & consumer web

Services

Software built to your spec

Web applications

Full product builds, from a working prototype to a production SaaS platform.

APIs & integrations

APIs and integrations designed to be depended on, not patched around.

Cloud & DevOps

Deployment pipelines and infrastructure that run themselves.

Modernisation

Untangling legacy systems into something a team can move fast on again.

Ongoing support

A defined support window after launch, or an embedded team on a rolling basis.

Product thinking

We ask what the software is actually for before we ask what stack to use.

How we work

How we work

  1. 01

    Discovery

    We pin down what the software needs to do, in writing, before any code.

  2. 02

    Build

    Shippable increments against a real environment from day one — no static mockups.

  3. 03

    Ship

    Deployed, verified against agreed acceptance criteria, walked through with you.

  4. 04

    Operate

    A defined support window and a documented handover — nothing informal.

Tell us what you're building.

Whether it's a product to evaluate or a custom build to scope, we reply within one business day.

Talk to usSee products