Open source. Built with Go.

The pieces for
your next
web application.

A composable Go toolkit for server-rendered web applications. Build with its packages, or create and evolve your application through conversation.

HatMax's gentleman in a hat and blue bow tie, drawn in black and white with fine connecting lines.

Composable packages

One toolkit.
Explicit connections.

app

Application lifecycle

Wire components explicitly and coordinate their startup, route registration, and shutdown.

config

Process configuration

Load and validate the configuration your application needs at startup, with clear defaults and overrides.

settings

Runtime settings

Define typed, validated settings that can change while the application runs, separately from startup configuration.

web · htmx · ui

Web interface

HTTP helpers, template rendering, forms, and UI primitives. Add interaction to server-rendered pages with HTMX.

db

Postgres integration

Connect to Postgres, apply SQL migrations, and wire the database into your application components.

auth

Authentication

User sign-up, sign-in, sessions, and authentication middleware. Use roles to control access.

mailer

Email delivery

Use the Mailer interface with SMTP, SES, SendGrid, or Mailgun. Change providers without changing how your application sends email.

scheduler

Background jobs

Schedule and run background work with a Postgres job store, replaceable through the JobStore interface.

pubsub

Application events

Connect components through events using Publisher and Subscriber interfaces, with a Postgres backend included.

Explore the design

The conversational builder

Describe it.
Build on HatMax.

Create and develop your application through conversation. Add features and refine fields and validation using HatMax's own primitives and conventions.

Review the plan before changes are applied. HatMax generates the code and runs project checks.

Meet the builder

Start an application

“Create an inventory application with a product feature.”

Keep developing it

“Add a required SKU and an optional reorder level to product.”

Your conversation. HatMax's building blocks.