Comparison
OSPOS is one of the best-known web-based open-source POS projects. Posnic takes a different path: local-first billing for shops that need the counter to keep working even when the internet is not dependable.
| Decision point | Posnic POS | Open Source Point of Sale |
|---|---|---|
| Architecture | Installable POS for local shop operation with optional cloud services. | Web-based point of sale application written in PHP using CodeIgniter, with MySQL as the data back end. |
| Best fit | Retail and restaurant counters that want simple local setup, offline billing and future cloud sync. | Teams that want a browser-based PHP/MySQL POS they can host and maintain. |
| Operational risk | Designed so core billing does not depend on public internet availability. | Reliability depends on the hosting environment, network and database maintenance chosen by the operator. |
| Developer fit | Good for teams that want a modern open-source POS project with AGPL source and commercial licensing options. | Good for PHP teams comfortable with CodeIgniter, MySQL, web server configuration and upgrades. |
| Cost path | Free local edition; optional Posnic Cloud for sync, backups and priority support. | Open-source project; hosting, maintenance and support choices are the buyer's responsibility. |
| Best next test | Install locally, create products, scan items, disconnect internet, sell, return, close and export. | Deploy a test server, load the same products and verify backups, updates, permissions and network behavior. |
Use Posnic when the business owner wants an application on the shop computer and does not want web hosting to be part of the first decision.
Use OSPOS when the technical team wants to run and maintain a web POS stack and already understands PHP/MySQL operations.
Many POS demos fail at the printer. Test product lookup, barcode scanning, receipt formatting, cash drawer behavior and end-of-day reports.
Posnic is positioned as a local-first installable POS with optional cloud services. OSPOS is a web-based POS written in PHP with MySQL as the back end.
Teams comfortable hosting and maintaining a PHP/MySQL web application should test OSPOS, especially when browser-based deployment is preferred.
Shops that want an offline-first POS on the counter computer, with source code access and an optional cloud upgrade path, should test Posnic.