The Manager.io alternative that brings your books with you

Yes. Back up your business in Manager to get a .manager file, then choose Move a company in Celerp and upload it. Celerp imports your accounts, contacts, invoices, bills, payments, stock and attachments, then compares its totals with your Manager figures. You can bring the full history or start from a cutover date with opening balances.

Manager has no file export for its lists and reports: it copies them to your clipboard as text. To move to Celerp you do not need to export anything. Manager's backup file (Businesses tab, click your business, then Backup) already holds your records and attachments, and Celerp reads it directly.

Neither. Full history brings every transaction across, so your past reports still work in Celerp. If you prefer a fresh start, choose a cutover date: balances on that date become opening balances, and only open invoices, bills and stock are recreated.

Backups from old versions of Manager use a format Celerp cannot read. Open the file in a current version of Manager, back it up again, and upload the new file.

Not yet. A business with balances in foreign currencies moves with Full history for now.

No. Manager.io is proprietary software from NGSoftware, built by essentially a single developer, and its public GitHub repository hosts compiled downloads only, with no source code and no open-source license. Celerp is developed in the open: the code is on GitHub (a source-available core plus open-source MIT modules) with a module marketplace, so you can read, audit, and extend what you run.

Yes. The desktop app is free and developed in the open. You only pay if you add the optional Connect tier for sync and AI.

Yes. Celerp is real double-entry accounting: chart of accounts, journal entries, bank reconciliation, tax handling, and the standard financial statements, plus inventory with multiple valuation methods, downloadable CSV export, a module marketplace, and built-in AI.

Celerp's AI can draft reports from a plain-language request, input bills from pictures, reconcile transactions - most of the things that a human can do. It is part of the optional Connect and AI tiers, which can be upgraded to from inside the desktop app. Manager.io has no AI features.

Celerp ships starter presets for a range of industries - fashion, food and beverage, electronics, and more - that switch on the right modules and product fields for your trade, so you are not configuring from a blank slate. Bring your existing customers, suppliers, items, and chart of accounts in bulk with CSV import. Day to day, you edit invoice and order lines inline on the page: click a value, change it, done - with no popups and no page reloads.

Yes. Celerp ships a working manufacturing suite with three screens. Demand Planning scans every open order and build request, nets what you need against on-hand stock and in-progress runs, flags each order as covered, partial, or short, and estimates cost and labor hours per product. Work In Progress is a production board where you issue components (consuming inventory) and receive finished goods (producing inventory) through a full planned, in-progress, and completed lifecycle with bulk shop-floor actions. Stock Orders handles internal build-for-stock demand. Recipes carry multi-level BOMs with cost roll-up and where-used, and work centers hold capacity and labor rates. A Manager.io production order builds a single finished item with no sub-assemblies.

Yes. Celerp has real sub-user accounts with roles and customizable role permissions built into the free app - the owner adjusts exactly what each role can access from a permission matrix, and every person gets their own login. The free desktop app runs one active session at a time; for simultaneous access, the Connect tier at $29/mo opens concurrent logins. Manager.io's free desktop edition has no user accounts or login at all, so multi-user needs its paid Server or Cloud edition.

Yes. Every feature in Celerp is a module - a plain Python package you drop in a folder, and Celerp wires up its database tables, API, and screens with no build step. Start from the open module template, or point an AI coding agent like Claude Code at it: describe the functionality you want, let it write the module, and import it. Manager.io ships as closed binaries with no module system, so you cannot add your own features at all.