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Inventory · head to head

Megaventory vs OpenBOM

Megaventory logo

Megaventory

Inventory

Order and inventory management for SMBs

From
Free
Rated
-
Full reviewWebsite
OpenBOM logo

OpenBOM

Manufacturing

Cloud bill of materials and part catalogue management priced per seat, with free read-only users

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Megaventory single Pro plan tier; no tiered options for different business sizes; OpenBOM pricing has three axes, editing seats plus data record count plus per-seat CAD add-ins at $25 to $45 each, so the real annual cost is well above the advertised per-seat figure.
  • They diverge on capability: Megaventory covers Inventory tracking, OpenBOM covers Multi-level BOMs.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Megaventory and OpenBOM actually diverge.

Attributes where Megaventory and OpenBOM differ
AttributeMegaventoryOpenBOM
Pricing modelsubscriptionPer user per month
PlatformsWebWeb, Windows, macOS, API
CategoryInventoryManufacturing
Founded2010Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Megaventory

  • Inventory tracking
  • Order management
  • Manufacturing
  • Multi-location
  • WooCommerce
  • Shopify
  • Magento
  • QuickBooks

Only in OpenBOM

  • Multi-level BOMs
  • Part catalogue
  • CAD add-ins
  • Change management
  • Free read-only users
  • REST API

What people use each for

The jobs each tool is most often brought in to do.

Megaventory

  • Small inventory operations with Pro plan's 50,000 transaction capacity and 5 usersnot OpenBOM
  • Multi-location inventory management across up to 20 locations with Pro plannot OpenBOM
  • Growing businesses requiring custom plans beyond Pro specifications via Enterprise tiernot OpenBOM

OpenBOM

  • A hardware startup replacing a shared BOM spreadsheet before its first contract manufacturing runnot Megaventory
  • A contract manufacturer sharing structured BOMs with customers who should see but not edit themnot Megaventory
  • An electronics team pulling BOMs straight out of Altium and mechanical CAD instead of retyping themnot Megaventory
  • A small manufacturer that needs part numbering and revision discipline but cannot fund a PLM projectnot Megaventory

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Megaventory

  • Single Pro plan tier; no tiered options for different business sizes
  • Additional users cost $45 per month each up to 35 total users
  • Additional transaction blocks cost $45 per month per 25k transactions up to 200k total
  • Enterprise plan pricing requires contacting sales for custom quote

OpenBOM

  • Pricing has three axes, editing seats plus data record count plus per-seat CAD add-ins at $25 to $45 each, so the real annual cost is well above the advertised per-seat figure.
  • Paying yearly nearly halves the seat price, from $55 to $30 and $165 to $90, so monthly billing carries an unusually heavy penalty for teams that want flexibility.
  • Change management, revision control and CAD file management are absent from the entry Team plan, so the cheapest tier is a catalogue rather than a working PLM.
  • It lacks the approval workflows, effectivity dating and audit depth that regulated medical and aerospace suppliers need, so companies pursuing ISO 13485 or AS9100 typically migrate away.
  • Record count is metered separately and a large imported part library can push a small team into a higher data tier without adding a single user.

Pricing, plan by plan

Megaventory

Free
  • Pro$135/month
    • 5 users
    • 50k transactions
    • 20 locations
  • Pro (annual)$121.5/month
    • 5 users
    • 50k transactions
    • 20 locations

OpenBOM

Free
  • FreeFree
    • Up to 2,000 data records
    • Basic BOM and catalogue management
    • Non-commercial and educational use
  • Professional Team$55/month
    • $30 per seat per month billed yearly
    • BOM management, part catalogue, inventory
    • RFQ and purchase orders
  • Company$165/month
    • $90 per seat per month billed yearly
    • Everything in Team
    • CAD file management and revision control
  • Enterprise$undefined/year
    • Single sign-on
    • Custom integrations
    • Private or custom hosting

Which should you pick?

Choose Megaventory if

  • You need inventory tracking.
  • You want to start without paying.
  • You also want order management.
Megaventory review

Choose OpenBOM if

  • You need multi-level boms.
  • You want to start without paying.
  • You work on Web, Windows, macOS, API.
  • You also want part catalogue.
OpenBOM review

Questions people ask

Is Megaventory or OpenBOM better?
Neither clearly leads. Megaventory starts at Free and OpenBOM at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Megaventory or OpenBOM?
Megaventory starts at Free and OpenBOM at Free.
Does Megaventory or OpenBOM run on more platforms?
Megaventory runs on Web. OpenBOM runs on Web, Windows, macOS, API.
Can I use Megaventory for free?
Both have a free tier, so you can try either at no cost before committing.
What is Megaventory best used for?
Megaventory is most often used for small inventory operations with pro plan's 50,000 transaction capacity and 5 users, multi-location inventory management across up to 20 locations with pro plan, growing businesses requiring custom plans beyond pro specifications via enterprise tier. Of those, small inventory operations with pro plan's 50,000 transaction capacity and 5 users and multi-location inventory management across up to 20 locations with pro plan are not what OpenBOM is typically brought in for.
What can Megaventory do that OpenBOM cannot?
Megaventory covers Inventory tracking, Order management, Manufacturing, Multi-location. OpenBOM covers Multi-level BOMs, Part catalogue, CAD add-ins, Change management.

Answered from the vendors’ own pages

Megaventory: What is included in Megaventory's Pro plan?

The Pro plan costs $135 per month ($121.50/month with annual billing) and includes 5 users, 50,000 transactions, 20 locations, 20,000 product SKUs, 20,000 clients, and 2 hours of training.

Source
OpenBOM: Is OpenBOM free?

There is a genuine free tier limited to 2,000 data records and aimed at non-commercial and educational use. Commercial teams start at $30 per seat per month billed yearly.

Megaventory: How much does Megaventory charge for additional users?

Megaventory charges $45 per month for each additional user, up to a maximum of 35 total users on the platform.

Source
OpenBOM: Do I pay for people who only look at BOMs?

No. Read-only users are unlimited and free on every paid plan, which is the main reason the total cost undercuts seat-for-seat PLM tools.

Megaventory: Does Megaventory offer a free trial?

Yes, Megaventory offers a 15-day free trial with no obligation to continue to a paid subscription. Non-profit organizations can contact Megaventory for discounted subscription rates.

Source
OpenBOM: Are the CAD add-ins included?

No. They are $25 per seat per month billed yearly, $45 monthly, and require an active Team or Company subscription.

OpenBOM: Can OpenBOM replace a full PLM?

For a startup, usually yes. For regulated manufacturing needing controlled workflows and full audit trails, no.

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