Self-hosted charity, club & association software
A membership register that knows who is in good standing and whether a motion carried, subscription invoices, signed consent forms for events, the volunteer rota, a door book that doubles as a fire roll call, and — for the shop side — a till with stock and a consignment ledger for donated goods. One payment each, running on the committee's own server rather than a per-member meter. Every tool below is a one-time purchase, and your data lives on your own server.
What the same jobs cost rented, year one
Every tool on this page is one payment; the figures above are the vendors' own published monthly prices multiplied by twelve, nothing else.
Self-hosted without the assembly
The other answer to “self-hosted” is a repository: clone it, read the compose file, provision a database, wire up mail, then keep it patched yourself. That is a fair answer when running infrastructure is already your job, and we would rather say so than pretend otherwise. Everything on this page is the other kind — all 7 of them. Each is bought once, the full PHP source is in the download, and the web installer finishes on ordinary shared hosting in about two minutes. No Composer, no Node, no build step, nothing to compile, and nothing that phones home.