I build tools that help people do things.

MolProbity Next

A complete rewrite of the MolProbity validation service, using modern web technology. The validation runs behind a task queue, so a structure that takes minutes to validate does not hold the browser. Results land in a sortable per-residue table beside three viewers: Mol* to look, Moorhen to correct, and Kinemage for probe dots and validation markup, with interactivity between the results table and the viewers.

Each residue carries one MP-Triage score answering which to fix next, driven by its worst finding rather than the sum, because four small clashes should not outrank a twisted peptide. It is reported to one decimal place so nobody reads it as a count.

AisleAlly

I know a lot of people with food restrictions, and the big allergen classes in the US do not cover most of what they avoid. Database tags only track the big nine, so anything else has to come from the ingredient text. Other apps I looked at had subscription fees, which I wanted to avoid.

AisleAlly reads that text against more than a dozen classes outside the big nine, from sulfites and nitrites to MSG and nightshades. Green is clear, red a direct hit, yellow when an umbrella term like "spices" or 香辛料 could be hiding one. Lookups reach a vision model only as a last resort, which is what keeps it subscription-free.

HockeyHandler

Built by a beer-leaguer, for beer-leaguers and up. The trainers I looked at either want a lot up front or bill through the off-season. I wanted something instructive at a price that makes sense for a game most of us play once a week.

The best part is the puck tracker. Set up a phone camera over a shooting board and it guides you through more than a dozen stickhandling drills while it tracks the puck, so off-ice practice stops being something you wonder if you are doing correctly.

A second device displays the drill, keeping it at eye level. Stickhandling with your head down is the habit you are trying to break.

Around it sits the rest: reaction and timing games for skaters and goalies, a drill library you can build into timed routines, a coaching diagram editor, and a 3 v 3 arcade game.