Both products put the installation on your server. InvoicePlane is a community-supported open-source application; Pepper is a commercial, source-available product with a defined support period. Compare the actual billing job and the maintenance arrangement you want.
InvoicePlane's official site describes quotes, invoices, clients and payments, plus template customization and payment-provider connections. Its published support model relies on the community and offers no support SLA. Sources checked 8 October 2026: InvoicePlane product and support information and official repository.
Run the same sample through both
Use a fixed-price job with two billable stages. Create the customer and quote, issue the first invoice, record a part payment and correct a charge. Then find the evidence your accountant needs.
Pepper adds a project record for agreed scope and fixed-price milestones. Staff approve completed work, prepare its exact invoice draft and follow the invoice and recorded payments. It also records manual purchases with receipts and exports monthly, quarterly and yearly exports for an accountant.
| Decision | Pepper | What to inspect in InvoicePlane |
|---|---|---|
| Billable work | Fixed-price milestones, tasks, timers and weekly timesheets; tracked time becomes invoice drafts | Tasks linked to projects and clients; completed tasks can be added to invoices |
| Customer payments | Staff record money received elsewhere | Required payment-provider setup and fees |
| Accountant hand-off | Period ZIP, PDF and CSV with available source files | The reports and exports your accountant needs |
| Custom presentation | Application source and Blade PDF views | Its documented themes and email/PDF templates |
Pepper has no bank feed, bookkeeping ledger, online checkout or customer login portal. Do not assume that owning the source fills those gaps without separate development.
InvoicePlane’s task and project documentation, checked 13 October 2026, describes that workflow. Test whether it matches how you bill completed work.
Read the license you will use
InvoicePlane publishes permission to use, modify and distribute its software subject to its notices, alongside restrictions for its name and logo. Review those conditions for your intended use. InvoicePlane license and copyright.
Pepper's commercial license covers one production installation, with development and staging copies for that installation. You may modify its code and sell widget access to multiple customer businesses on it. You may not redistribute the application source or installable package. Pepper's terms.
Budget for the person maintaining it
Pepper costs $199 for one production installation, with full source, a perpetual licence, and one year of updates and support. Updates and support renew automatically at $199/year unless you cancel. Cancel anytime to stop future charges; your downloaded copy keeps working after the paid period ends. Product support excludes custom code and server administration; it has no urgent-response or fix-time commitment.
Whoever runs either installation still needs to maintain hosting, backups and updates. Rehearse recovery and a representative update before depending on the setup for live work.
Pepper has no InvoicePlane migration tool. Keep existing records intact while testing a fresh installation. Start by assigning the maintenance work for either installation. The source guide explains Pepper’s licence; the read-only demo lets you inspect example records.