OneTimeSuite Blog · 2026

5 Free & Open-Source Alternatives to SimpleTexting

Looking for a free or open-source alternative to SimpleTexting? Remindly is the closest direct swap — MIT-licensed source on GitHub, or a $34 one-time packaged install. Since you're already auditing what you pay SimpleTexting every month, here are four more pay-once tools from the same catalog worth a look while you're at it — different jobs, same idea: buy the software once instead of renting it forever.

1. Remindly — replaces SimpleTexting

Self-hosted appointment reminder tool that sends SMS and email through your own Twilio and SMTP. $34 once vs SimpleTexting's $29+/mo. Free on GitHub, or the packaged installer on Whop.

See Remindly → · Source on GitHub

2. Inkseal — Upload a PDF, place fields, route signers, get a flattened audit-trailed document — on your own box. First document free.

Replaces DocuSign ($10/mo). $59 once. See Inkseal →

3. Keyloop — A desktop TOTP authenticator with an encrypted local vault and encrypted, QR and URI exports.

Replaces 1Password ($2.99+/mo). $19 once. See Keyloop →

4. Keymaster — Ed25519-signed license keys your apps verify offline, seat limits, signed downloads & webhooks.

Replaces Keygen (from $99/mo). $49 once. See Keymaster →

5. Ledgerlite Home — Local-first zero-based budgeting with CSV import, payee rules and net-worth tracking.

Replaces YNAB ($14.99/mo). $15 once. See Ledgerlite Home →

Why this list is worth bookmarking

Every app above is a one-time purchase with MIT-licensed source, no accounts with us and no telemetry. None of them are trying to be the next SimpleTexting — they're trying to be the last subscription you pay for that specific job.

Try Remindly — $34, once

Self-hosted appointment reminder tool that sends SMS and email through your own Twilio and SMTP.