Database tooling, built on evidence
Tools for people whose work is the database.
Tiervis makes two products for the people who build, ship and run databases. Tigerfish is where you spend the day: write and run SQL, find out why it's slow, and ship the fix. Sailfish watches your whole estate, tells you what to fix first, and fixes it safely.
Two products. One foundation.
Tigerfish and Sailfish share the same connectivity, diagnostics and assistant libraries, so a server you trust in one behaves the same in the other.
Tigerfish
Query · Diagnose · Ship
Your whole database day, in one place.
A development environment for SQL Server, Azure SQL, PostgreSQL and Fabric. Write SQL with IntelliSense that understands your query, find out why something is slow, and fix it, all without switching tools.
- Query editor with alias-aware IntelliSense, formatting, lint and plans
- Diagnose ranks what's slow or blocked, with Kill and Optimise one click away
- Compare, deploy, model and test in the same app
- Windows, Linux and macOS, plus a command line for CI
Sailfish
Monitor · Prioritise · Fix
Know what to fix first. Then fix it, safely.
Monitoring for SQL Server, Azure SQL, PostgreSQL and more. One ranked Attention Queue across your estate, each problem explained in plain words, with a fix that is checked before and after it runs.
- 24 built-in checks, plus your own data SLAs
- Governed fixes with verification and a tamper-evident audit
- Automation earned one fix type at a time
- Desktop, web server, phone app and CLI
Fewer dashboards to interpret. More answers you can act on.
How we build
Database tools touch the systems a business cannot afford to get wrong. These are the rules both products are held to.
- Evidence over assumptionEvery claim on this site maps to a shipped, tested feature. Thousands of automated tests run against real SQL Server, PostgreSQL and MySQL instances.
- Nothing runs without proofA deployment is ordered by its dependencies; a fix re-checks the problem before it runs and verifies it is gone afterwards.
- No agents on your serversBoth products connect with ordinary database logins. Sailfish monitors with a read-only login and can use a separate one for fixes.
- Your data stays yoursWorks offline with no cloud dependency. The AI assistant is optional, follows data-residency rules, and strips literals before anything leaves.
Try them against your own databases.
We are working with early users now. Tell us what you run and we will get you set up.