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How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

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How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

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A tree made of LEGO with deep roots and a magnifying lens

Healthcare software teams keep fixing symptoms: Real problems run deeper

Healthcare engineering and product teams spend more time managing technology than improving care. Original survey data, industry research, and expert interviews reveal the macro trends and investment patterns holding healthcare software back in 2026.

Cathy Colliver

Legacy modernization

Ensō (Zen circle) with digital flourishes

🐍 Functionally Zen

Kyle Adams

Future-proof innovative software

Crab working on a tiny laptop in a sandbox on top of a desk with monitors in the background

Get in the box: Illustrated permissions guide to make Claude chill

Joé Dupuis

Nesting boxes unfold from decorative to scaffolding to hardware

We're about to unwind fifty years of "Progress"

Doc Norton

Double Takes

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Double Takes

TDDing with Claude is like having a pair that removes all the failing assertions every time you go to the bathroom.

Steve Jackson

State machines are the answer for those seeking determinism in the era of AI agents.

Dave Mosher

A Slack conversation left Doc reflecting on what bug bashes say about the systems we work in.

Doc Norton

Test-driven development is to programming what double-entry bookkeeping is to accounting.

Neal Lindsay

The fundamental character flaw of the software creator is not the misguided belief that they can solve any problem with software. Instead, it is the belief they can understand how their own software works before they create it.

Steve Jackson

We may need a SaaS appendix for Zawinski's law:

Any SaaS platform attempts to expand until it is a social network.

Matt Jones

Tame the frontend with Elm

Tame the frontend with Elm

Discover the benefits of Elm such as no runtime exceptions and helpful compiler error messages. Learn some of Elm's syntax and how to structure applications with the Elm Architecture.

Jeremy Fairbank

Jeremy Fairbank

Software tooling & tips

architecture

elm

javascript

testing

data-engineering

Under pressure

Under pressure: How to handle pressure to go faster

Todd's talk from Agile and Beyond 2017 delves into common pitfalls in fast-paced development environments and offers strategies to foster trust and effective communication between developers and management, ensuring better outcomes and reduced stress.

Todd Kaufman

Communication & teams

go

communication

teams

conference-talk

going to eleven

How we prepared for 200,000 users: Lessons from a real-world product launch

Load testing with locust to prepare for a large-scale product launch. Learn about evolving an architecture to handle heavy loads and external dependencies.

Steve Jackson

architecture

aws

testing

devops

greenfield-product-development

Build shared understanding

Better software through shared understanding

Avoid tool lock-in. Build shared understanding through examples and pick tools that match the maturity of your software project.

Steve Jackson

Communication & teams

communication

teams

conference-talk

developer-experience

How to program

Justin Searls explored a strange problem about programming in his RailsConf 2017 keynote: we don't have very evolved ways to convey clearly the details of the countless actions, feelings, and thoughts that go into writing software.

Justin Searls

Accelerate quality software

productivity

testing

conference-talk

Master accessibility techniques for better app navigation

Unlock the power of accessibility techniques to ensure all users, including those with disabilities, can navigate your app effortlessly. From keyboard navigation to ARIA landmarks, we've got you covered!

Sam Jones

Equity, Diversity & Inclusion

a11y

ux-ui

testing

accessibility

Makefiles made easy: Key tips for beginners

A simple guide to Makefiles to make your development smoother and more approachable. Perfect for beginners!

Dave Mosher

Software tooling & tips

automation

Accessibility is usability

Discover how following accessibility guidelines can remove barriers and improve the experience for all users, not just those with disabilities.

Sam Jones

Equity, Diversity & Inclusion

a11y

testing

accessibility

You're N.E.A.T.!

Technology is a means to an end: answers to very human questions. We want to connect with other folks who share that belief.

Ways to connect

Test Double Executive Leadership Team

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