Actual Budget

Actual Budget is an open-source, local-first personal finance manager and envelope budgeting app — a self-hosted alternative to YNAB and Mint. This template deploys the official Actual server (web UI on port 5006). All data lives in a self-contained SQLite database under /data on persistent storage, so no external database is required. On first launch, open the app URL, set your server password, then create your first budget.

Source: GitHub