Free Bill of Materials & Inventory Management Software

StockFlow is the best BOM software for most small manufacturers in 2026. It includes multi-level bills of materials, cost rollup, and barcode scanning on the free Starter plan (25 products, unlimited BOM lines, no credit card). The free Starter plan includes up to 3 bills of materials with cost rollup; unlimited BOMs and automatic stock deduction when a production order completes (the Production module) are included on Professional and above.

Yes. StockFlow offers free bill of materials management software on its permanent Starter plan (25 products, unlimited BOM lines per product, no credit card required). It supports multi-level BOMs and cost rollup free on every plan. The free Starter plan includes up to 3 bills of materials with cost rollup; unlimited BOMs and automatic stock deduction when a production order completes (the Production module) are included on Professional and above.

StockFlow is the best free bill of materials software for small manufacturers. It supports multi-level BOMs, cost rollup across BOM levels, and barcode scanning on the free Starter plan (25 products, up to 3 BOMs with unlimited lines each). The free Starter plan includes up to 3 bills of materials with cost rollup; unlimited BOMs and automatic stock deduction when a production order completes (the Production module) are included on Professional and above.

Yes. StockFlow supports multi-level BOMs where sub-assemblies are themselves components of higher-level finished goods, with cost rollup free on every plan. The free Starter plan includes up to 3 bills of materials with cost rollup; unlimited BOMs and automatic stock deduction when a production order completes (the Production module) are included on Professional and above.

Inventory management software tracks stock levels, movements, and reorders across locations. BOM (bill of materials) software extends this by defining the exact components and quantities needed to build a finished product. StockFlow combines both in one platform, with automatic component stock deduction on production runs available via the Production module.

StockFlow's core BOM authoring is fully available on the permanent free Starter plan: 25 products, 1 user, 1 warehouse, with up to 3 BOMs, unlimited lines per BOM and no cap on BOM depth. The free Starter plan includes up to 3 bills of materials with cost rollup; unlimited BOMs and automatic stock deduction when a production order completes (the Production module) are included on Professional and above.

BOM cost rollup sums each component line as quantity × unit cost × (1 + scrap%), then rolls sub-assembly totals into parent BOM lines. For example, a Wheel Assembly costing $58 (rim + tire + spokes) used twice in an E-Bike adds $116 to the finished-good material cost. StockFlow recalculates automatically when component prices change, free on every plan.

OpenBOM excels at CAD-driven BOM collaboration and revision control but its free tier is limited for ongoing production use. StockFlow is stronger when you need multi-level cost rollup and barcode receiving on a permanently free Starter plan (25 products) without self-hosting. The free Starter plan includes up to 3 bills of materials with cost rollup; unlimited BOMs and automatic stock deduction when a production order completes (the Production module) are included on Professional and above.

Start with BOM software if you need to define components, explode assemblies, and deduct stock on production. Add MRP when you need demand-driven scheduling, capacity planning, and automated purchase requisitions across many SKUs. StockFlow covers BOM authoring free on every plan, with production stock deduction and MRP scheduling available through the Production module.

The best free BOM management tools combine multi-level bill of materials with cost rollup: StockFlow (cloud, free Starter plan), IndaBOM (open-source, self-hosted, sourcing-focused), and Odoo Community (open-source ERP with manufacturing modules). StockFlow needs no self-hosting or setup, and adds automatic production stock deduction via its Production module.

Inventory management software with bill of materials should track finished goods and components in one system, support multi-level (nested) BOMs with automatic cost rollup, offer CSV import so you are not rebuilding an existing spreadsheet BOM from scratch, and let you add automatic component stock deduction on production without switching tools. StockFlow combines all of this with barcode scanning, with BOM authoring free on Starter and production deduction via the Production module (included on Professional and above).

Yes. StockFlow combines inventory management and bill of materials in one account instead of two separate tools: stock levels, multi-level BOMs, and cost rollup share the same product records, and a production run can deduct every component automatically via the Production module. BOM authoring is free on the Starter plan.

Bill of materials inventory management links each finished-good BOM to the actual component stock on hand: before you schedule a production run you can see whether enough of every component is available, and completing the run deducts each component quantity from inventory automatically instead of updating stock by hand afterward.

A bill of materials (BOM) defines the components and quantities needed to build one unit of a finished product. MRP (Material Requirements Planning) uses the BOM alongside demand forecasts and lead times to calculate what to order and when. You need a complete BOM before MRP is useful. StockFlow covers BOM authoring free on every plan; production orders and MRP scheduling are the next layer for higher-volume manufacturers.

Yes for a single-level flat list with few SKUs. Problems emerge at scale: multi-level cost rollup requires fragile nested formulas, there is no live inventory link, and version chaos makes auditing difficult. Dedicated BOM software like StockFlow eliminates those problems with free multi-level cost rollup, and can deduct component stock automatically when a production order completes via its Production module, something no spreadsheet can do without custom scripting.

Most small manufacturers need two to three BOM levels: finished good at level 0, sub-assemblies at level 1, and raw materials or purchased components at level 2. Complex products like electronics or vehicles can go deeper. StockFlow supports unlimited BOM nesting depth on the free Starter plan, so you are not forced to flatten a multi-level structure to stay within tier limits.

Yes. Food manufacturers model sub-recipes as sub-assemblies: a sauce recipe is a child BOM consumed by a meal kit parent BOM. Cost rolls up automatically from ingredient cost through the sub-recipe to the finished meal kit, free on every plan. Batch sizes and unit-of-measure conversions can be handled at the BOM line level.

Native Shopify, marketplace, and QuickBooks connectors are on StockFlow's integrations roadmap and are not live plan features today. Many small manufacturers use CSV import/export to keep finished-good sales and accounting tools aligned with the same inventory BOM builds deduct from. Contact sales if you have a specific integration requirement.