LetterDrop is an open source alternative to FormKeep that is easy to self-host.
$ cp .env.example .env
$ docker run -d \
-p 5432:5432 \
-e POSTGRES_USER=letterdrop \
-e POSTGRES_PASSWORD=letterdrop \
postgres:10
$ go run .
https://github.com/golang-migrate/migrate/tree/master/cli#installation
$ migrate \
-path=migrations \
-database=postgres://letterdrop:letterdrop@localhost:5432/letterdrop?sslmode=disable \
up
$ PGPASSWORD=letterdrop psql -h 127.0.0.1 --user letterdrop <<EOF
insert into users (name, email, password_digest, is_email_confirmed)
values ('admin', lower('admin@letterdrop.com'), crypt('keyboardcat', gen_salt('bf', 8)), true)
returning *
EOF