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Capstan

Builds that remember why they broke.

A build and test runner that keeps a memory of every defect that has actually hurt you. One symptom can have many causes, and it stays open while any of them is unfixed; a fix is not finished until it is a gate that prevents the whole class. Runs entirely on your machine — no account, no server, no telemetry.

Buy Capstan — $179 one-time →

PlatformsmacOS · Linux · Windows · single binary
Websitelinussoftware.com
Data locationThis machine
InferenceOn device
Plans4 tiers
Capabilities

What it does.

One symptom, many causes

Issue trackers model one report to one fix. Real defects do not: a bug fixed three times in three places is one defect with three causes, and closing it after the first records something false.

A fix is not done until it is a gate

A patch prevents one instance; a gate prevents the class. Until the gate exists the defect is Fixed, not Prevented — and if the class comes back after the gate, the gate was wrong and the defect is demoted.

Failure-mode coverage

Line coverage tells you what a test touched. This tells you how many of the ways you have already been hurt cannot hurt you again.

An AI that cannot move the goalposts

The optional proposer drafts a patch for a red build, then the same gates run again on the patched tree. A patch that touches a gate definition is rejected without being run — enforced by a hash, not by a prompt.

Plans

Every tier, in full.

What each tier unlocks, generated from the same catalogue the application gates against — so the feature list here is exactly what the software enforces. Pricing is announced at launch.

PlanPriceIncludes
Free Included
  • run
  • gates
  • coverage
  • triage
Pro $179 once
  • run
  • gates
  • coverage
  • triage
  • proposer
Team $3,980 once
  • run
  • gates
  • coverage
  • triage
  • proposer
Site $35,800 once
  • run
  • gates
  • coverage
  • triage
  • proposer