Stop paying $299/mo for Katana MRP
Celerp gives you everything Katana offers - manufacturing, BOM, inventory management, purchasing - plus built-in accounting. No 30 SKU limit. Free, with open-source modules.
Free, with open-source modules. No credit card required.
Why manufacturers switch from Katana
Katana has a free plan but limits you to 30 SKUs. Their paid plan starts at $299/mo. Here is what it is really costing you.
Free plan is crippled
Katanas free plan limits you to 30 SKUs. A real manufacturer has hundreds or thousands. You are forced to upgrade to $299/mo Core plan.
No built-in accounting
Katana does not include accounting. You still need QuickBooks or Xero on top. Celerp has full double-entry accounting built in.
You dont own your data
Katana is SaaS - your data lives on their servers. If you cancel, you lose access. Celerp is self-hosted - your data stays on your machine.
No click-to-edit bulk entry
Updating 50 product prices in Katana means opening each one individually. Celerp has spreadsheet-style click-to-edit - update 50 prices in 45 seconds.
Free plans: Celerp vs Katana Free
| Feature | Celerp | Katana Free |
|---|---|---|
| SKU limit | ✓ Unlimited | 30 SKUs |
| Manufacturing / BOM | ✓ | ✓ |
| Built-in accounting | ✓ | ✗ |
| Click-to-edit bulk entry | ✓ | ✗ |
| Self-hosted / data ownership | ✓ | ✗ |
| AI operator | ✓ | ✗ |
| Modular architecture | ✓ | ✗ |
| Build your own modules | ✓ plain Python, point Claude Code at the template | ✗ |
How we make money
The desktop app is free. We charge for optional Connect features: connector sync, encrypted backups, and AI. No hidden fees, no per-user pricing.
Paid plans: Celerp Connect vs Katana Core
| Feature | Celerp Connect$29/mo | Katana Core$299/mo |
|---|---|---|
| SKU limit | ✓ Unlimited | ✓ Unlimited |
| Self-hosted / data ownership | ✓ | ✗ on their cloud |
| Built-in accounting | ✓ | ✗ syncs to QuickBooks/Xero |
| AI operator | ✓ | ✗ |
| Build your own modules | ✓ plain Python, point Claude Code at the template | ✗ |
| Remote access + sync | ✓ | ✓ |
Celerp Connect is $29/mo, self-hosted, with unlimited SKUs and users. Katana Core is $299/mo on Katana's cloud.
Frequently asked questions
Is Celerp really free?
Yes. The desktop app is free, with a source-available core and open-source MIT modules - all features included, no SKU limits, no paywalls, and no per-seat charges ever. Create unlimited user accounts; one person is signed in at a time on the free app, and Celerp Connect connects your whole team at once.
Can I migrate from Katana?
Yes. Export your products, BOMs, and orders from Katana as CSV. Import them into Celerp. Most businesses are operational within 30 minutes.
Does Celerp have the same features as Katana?
Celerp covers manufacturing, BOM, inventory management, and purchasing - all things Katana offers. Celerp also includes features Katana charges extra for: built-in accounting, AI operator, click-to-edit bulk entry, and no SKU limits.
Is there a SKU limit on Celerp?
No. Celerp has no SKU limits. Track as many products as you need - raw materials, finished goods, assemblies, components. All unlimited.
How does the whole team connect?
On the free app, one person is signed in at a time - perfect for a single workstation. To put your whole team on it at once, add Celerp Connect: it turns any Mac Mini or PC into a secure server everyone reaches from their browser, in the office or remotely. One flat price, never per user - and your existing server works too.
Switch from Katana today
Free, source-available, self-hosted. No SKU limits. Scales from a single user to your whole team.
Source-available. Self-hosted. Free forever.