Ian Darwin
Ian Darwin
Techie (Java Champion, Android/Flutter, OpenBSD, EVs), Author, Conference Speaker, Tech instructor, Photographer, Dad.

For truth, freedom, humanity, science.
Things I do
Java
I code, write about, and teach Java and Java EE (Jakarta).
Mobile
I build all-platorm mobile apps in Flutter, or in Java for Android-only.
Books
Best books on computer software, by me and others.
Free Software
I contribute to open source projects, especially OpenBSD, my own on github, etc.
OpenBSD Unix
A free Unix-like operating system focussing on security, code correctness.
Photog for change
Portraits to real estate to docs. Exposing what needs exposing.
Sustainability
Sustainable purchasing is usually an option. Vote with your wallet.
Electric Cars rock!
EVs are cleaner, cheaper, and one "road" towards a sustainable climate.
I Tried That
Reviews of tech products (and some non-tech).
Causes
With Charity For All: Worthy causes to support.
3D Printing
Making physical objects under software control.
Travel
Occasional Travel Blogs too.
In my bag
Hardware & software I use.
Computing History
The long history of computing
Everything Else
I have tons of information available, much of it original.
Consulting
Hire me to train, develop, mentor, administer, ...