What is the difference between a script, a SaaS boilerplate and a finished platform?
A script is an application that serves one business: one company, one set of data, no way to charge other people for access. A SaaS boilerplate gives you tenancy, authentication, plans and billing but no product — the reason anyone subscribes is still yours to build. A finished platform gives you both, ready to rebrand and sell. All three are advertised as “SaaS source code”, and choosing the wrong one is the most expensive mistake in this market.
Written by ZoopCoder, who build and sell SaaS source code. That makes us an interested party in this answer, so we have kept it to things you can verify yourself.
The numbers
$40–$120
Script
One business. Becoming multi-tenant is a rewrite.
$199–$999
SaaS boilerplate
Tenants and billing, no product. Months to launch.
$150–$500
Finished platform
Product and tenancy. Days to launch.
The three, side by side
The price is not the signal — a boilerplate often costs more than a finished platform. What separates them is which half of the work has already been done for you.
| Script | SaaS boilerplate | Finished platform | |
|---|---|---|---|
| Serves many paying customers from one deployment | No | Yes | Yes |
| Has a product customers would pay for | Yes, for one business | No | Yes |
| Subscription billing and plan limits | No | Yes | Yes |
| Tenant data isolation | No | Yes | Yes |
| Typical price | $40–$120 | $199–$999 | $150–$500 |
| Time to first paying customer | Not applicable | Months | Days |
| Buy it when | You are running one business, not selling software | Your product idea is genuinely new | The category exists and your edge is customers or price |
How to tell them apart from the listing alone
Sellers rarely use these words. These are the tells that survive marketing copy.
- Look for a pricing page inside the demo. A finished platform has plans, limits and a checkout for its customers. A script has an admin panel and nothing else.
- Look for a signup that provisions. If registering in the demo creates a working, empty workspace on its own subdomain with no human step, tenancy is real. If registration creates a user inside one shared dataset, it is a script.
- Read the screenshots for a super-admin. Two levels of administration — one for you, one for each customer — is the structural signature of multi-tenancy.
- Count the domain names in the demo. Custom domain or subdomain per tenant is difficult to fake and rarely present in a script.
- Ask what the product does for an end user. If the honest answer is “whatever you build”, you are looking at a boilerplate, whatever the listing calls it.
The retrofit trap
“We will add multi-tenancy later” is the single most expensive sentence in this category. Making a single-tenant script multi-tenant is not a feature; it touches every query, every file path, every background job, every export and every cache key in the application. In practice it costs more than the custom build you were avoiding, because you are paying to change working code rather than to write new code.
The fifteen-minute test that avoids it: in the seller’s demo, register two separate accounts. Note a record ID inside the first. Log in as the second and put that ID in the URL. You must get not-found or forbidden. If you can see the other account’s record, the software is single-tenant no matter what the listing says.
Where to go next
These pages carry the detail this answer summarises.
Frequently asked questions
Is a boilerplate a bad purchase?
No, it is a specific purchase. A boilerplate is right when your product concept is the differentiator and nobody sells it yet, because it removes the plumbing you would otherwise write twice. It is wrong when a working version of your product already exists for $299, because you will spend months rebuilding it.
Can a script be upgraded to multi-tenant?
Technically anything can. Practically it is a rewrite of the data layer plus every job, export and cache that touches it, and it usually exceeds the cost of buying a genuinely multi-tenant platform outright. Treat "we will add it later" as a decision not to have it.
Which one do I need to run a SaaS business?
A finished platform or a boilerplate. A script cannot charge other businesses for isolated access to itself, and that is the definition of the SaaS model.
Why are finished platforms sometimes cheaper than boilerplates?
Different sellers and different volumes. Boilerplates are sold to developers in small numbers at developer prices; finished platforms are sold to many buyers who each rebrand them, so the unit price can be lower for far more delivered software.
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