Verdict
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Add what you pay today
Enter a monthly amount for at least one tool to see the math.
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Your SaaS bill has a free twin on GitHub. Is switching worth it?
Type what you pay today for nine common business tools. You get the open-source swap, what you'd really save after servers and setup time, and the catches the "free repos" videos skip. Everything runs in your browser.
What you pay per month
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The nine swaps
| You pay for | Open-source swap | Stars | License |
|---|---|---|---|
| Mixpanel / Amplitude | PostHog | 40k | MIT core + paid EE folder |
| Semrush / Ahrefs | OpenSEO | 22k | MIT |
| FreshBooks | Invoice Ninja | 10k | Elastic License 2.0 (source-available) |
| Calendly | Cal.diy | 49k | MIT |
| Chargebee / Stripe Billing add-ons | Autumn | 2.7k | Apache-2.0 |
| Typeform | Typebot | 10k | FSL-1.1 (becomes Apache-2.0 later) |
| Pipedrive / HubSpot Sales | Frappe CRM | 3.6k | AGPL-3.0 |
| GoHighLevel / ActiveCampaign | Mautic | 11k | GPL-3.0 |
| Intercom / Zendesk | Chatwoot | 37k | MIT core + paid EE folder |
Star counts and licenses checked on GitHub, Sep 30, 2026.
How the math works
- 01Yearly savings are what you pay now minus your server estimate, times twelve.
- 02Setup time is priced at your hourly rate: 4, 10, or 24 hours per tool depending on how hard it is to run.
- 03It says SWITCH when setup pays back within 6 months and saves $1,000+ a year, MAYBE up to 24 months, and KEEP otherwise.
"Free" software still costs upkeep: updates, backups, and security are yours now. Several of these are open core or source-available rather than fully open source. A vendor's managed cloud is often the right middle ground.
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