Northwest Dive Club

A mention (or plug?) for the open source dive analysis and planning application, Subsurface.
https://subsurface-divelog.org/

Due to significant recent work by highly capable software/diving enthusiasts, features now include the ability to download logs from dive computers (e.g. my Shearwater), detailed information about Buhlmann compartment models, detailed deco and technical planning/review, and CCR features. After learning my way around it, I find it just as useful as MultiDeco, for example--though presumably fees paid MultiDeco result in useful reliability for its industry customers and accustomed users.

Subsurface is a great dive log and planning package. I would not equate the fees paid for programs like MultiDeco to necessarily translate into more reliability. If anything, the open implementation of the Buhlmann ZHL-16C and VPM algorithms allows more transparency into how it works and to allow bugs to be fixed by a broader group of developers.

Full disclosure: I have helped develop some of the dive site import and export and dive statistics features in Subsurface.

My fraction of agreement there = 1.0
Though I do hope that my attempt to respect and honor the investments and loyalty of others to MultiDeco etc is appreciated.

MultiDeco is the gold standard of dive planning.

Yes, we know
Based on my experience with both thus far, I rate Subsurface to be the silicon standard