Celerp
A free, local-first desktop ERP bundling inventory, invoicing, CRM and double-entry accounting with a built-in Postgres database — no cloud required, unlimited users, with optional $29-49/month sync and AI add-ons.
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Description
Most small-business ERP software means a monthly bill per user and your business data living on someone else's servers. Celerp flips that: it's a desktop app you download and run, with your data staying on your own machine by default.
Celerp is a free, self-hosted ERP that bundles inventory management (FIFO/FEFO/LIFO costing), invoicing, purchase orders, CRM and double-entry accounting into one desktop application, with PostgreSQL bundled in so there's nothing separate to install. It runs on Windows, macOS and Linux, supports unlimited users on every plan (no per-seat pricing), and exposes a REST API compatible with Claude and GPT-4 for automation. The core is dual-licensed: BSL 1.1 for the engine and MIT for default modules — open enough to inspect and extend, but not a fully permissive open-source license. Optional paid tiers (Connect at $29/month, Connect+AI at $49/month) add cloud sync, backups and integrations with Shopify, WooCommerce, Xero and QuickBooks.
💬 Our review
The short version: a genuinely rare find — a full accounting/inventory/CRM ERP that's free, unlimited-user and runs locally by default, which undercuts subscription ERPs like Odoo or Zoho on cost for teams willing to self-manage their data.
The free tier here isn't a crippled trial: unlimited users, full double-entry accounting, inventory costing methods and CRM are all included with no seat tax, which is unusual in the ERP space where per-user pricing is the norm (Odoo, NetSuite, Zoho Books all charge per seat). The licensing is worth being precise about: it's not fully open-source MIT-everywhere — the core engine is under the Business Source License (BSL 1.1), a source-available license with commercial-use restrictions, while only the default modules are MIT. That's a meaningfully different promise than a project like ERPNext, and worth knowing before building custom extensions on top. Best fit: small businesses or freelancers who want real accounting and inventory software without a monthly bill and are comfortable running a local desktop app; skip it if you need true multi-location cloud access without paying for the Connect tier, or need a fully permissive open-source license for a fork.
💰 Pricing
📊 Global score
🤖 AI-enriched data
Application de bureau gratuite, utilisateurs illimités. Connect : 29 $/mois (290 $/an) pour la synchro/sauvegardes/connecteurs. Connect+AI : 49 $/mois (490 $/an) avec 200 requêtes IA mensuelles.
Pros
Gratuit avec utilisateurs illimités, sans taxe par siège contrairement à Odoo ou Zoho
Comptabilité en partie double + stock + CRM réellement complets, pas une version bridée
Fonctionne en local (PostgreSQL intégré), données sous contrôle total de l'utilisateur
Cons
Licence BSL 1.1 pour le moteur — pas un open-source pleinement permissif comme ERPNext
Accès cloud/multi-site nécessite l'abonnement Connect payant
Produit encore jeune (14 étoiles GitHub), écosystème d'extensions limité