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ERP · head to head

Sage X3 vs SOS Inventory

Sage X3 logo

Sage X3

ERP

Mid-market ERP sold and implemented almost entirely through Sage partners

From
$1500/month
Rated
-
Full reviewWebsite
SOS Inventory logo

SOS Inventory

Inventory

Inventory management for QuickBooks Online

From
$69.95/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Sage X3 sage sells X3 through partners rather than direct, so implementation quality varies more than the software does, and a weak partner produces a failed project on a product that works fine elsewhere.; SOS Inventory the Companion plan at $69.95 per month is limited to a single location and 1 custom field
  • They diverge on capability: Sage X3 covers Multi-company and multi-legislation finance, SOS Inventory covers Lot tracking.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Sage X3 and SOS Inventory actually diverge.

Attributes where Sage X3 and SOS Inventory differ
AttributeSage X3SOS Inventory
Starting price$1500/month$69.95/month
PlatformsCloud, Windows, WebWeb, Cloud-based
CategoryERPInventory
Founded19812011

Identical on both: pricing model (subscription), free tier (No), 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 Sage X3

  • Multi-company and multi-legislation finance
  • Inventory and warehouse
  • Purchasing
  • Sales and pricing
  • Project accounting
  • Quality control
  • Development framework

Only in SOS Inventory

  • Lot tracking
  • Serial numbers
  • Multi-location
  • QuickBooks Online
  • Shopify
  • BigCommerce
  • ShipStation
  • Web support

Both cover

  • Manufacturing

What people use each for

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

Sage X3

  • A group with subsidiaries in several countries consolidating from separate accounting systems into one ledgernot SOS Inventory
  • A food or chemical manufacturer needing lot traceability and formulation alongside standard financialsnot SOS Inventory
  • A distributor with multiple warehouses and complex customer specific pricing that spreadsheets no longer containnot SOS Inventory
  • A business that has outgrown a small business accounting package but cannot justify a tier one ERP programmenot SOS Inventory

SOS Inventory

  • Inventory managementnot Sage X3
  • Job costingnot Sage X3
  • Manufacturing automationnot Sage X3

Where each one falls short

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

Sage X3

  • Sage sells X3 through partners rather than direct, so implementation quality varies more than the software does, and a weak partner produces a failed project on a product that works fine elsewhere.
  • Payroll is not part of X3 in most markets and is bought as a separate product or a third party service, so an organisation assuming a complete back office in one licence finds an extra vendor, an extra integration and an extra bill.
  • The product uses its own development language and toolset rather than a mainstream stack, so the pool of people who can maintain a customised installation is small, expensive and largely employed by partners.
  • Heavy customisation is possible and consequently common, and customised installations are harder to upgrade, which surfaces years later as a business running an old version because taking the current one means retesting and reworking every modification.
  • The North American partner ecosystem and third party add-on market are thinner than for the products X3 competes with, so niche requirements are more often met by custom development than by buying something already built.

SOS Inventory

  • The Companion plan at $69.95 per month is limited to a single location and 1 custom field
  • Serial and lot number tracking, barcoding and unlimited locations require the Plus plan at $139.95 per month
  • Phone support is excluded from the Companion plan
  • Job costing, advanced manufacturing and the customer portal require the Pro plan at $194.95 per month
  • Each plan includes only 2 to 5 users and additional users cost $25 each per month
  • The 2 months free discount requires paying a year up front

Pricing, plan by plan

Sage X3

$1500/month
  • Standard$1500/month
    • Core ERP functionality
    • Financial management
    • Inventory management
  • Enterprise$3000/month
    • Multi-company support
    • Advanced manufacturing
    • Business intelligence

SOS Inventory

$69.95/month
  • Companion$69.95/month
    • Basic inventory management
    • 2 included users
    • Additional users $25/month each
  • Plus$139.95/month
    • Labeled most popular
    • Unlimited locations
    • Serial and lot tracking
  • Pro$194.95/month
    • Advanced automation
    • Job costing
    • Advanced manufacturing

Which should you pick?

Choose Sage X3 if

  • You need multi-company and multi-legislation finance.
  • You work on Cloud, Windows, Web.
  • You also want inventory and warehouse.
Sage X3 review

Choose SOS Inventory if

  • You need lot tracking.
  • You work on Web, Cloud-based.
  • You also want serial numbers.
SOS Inventory review

Questions people ask

Is Sage X3 or SOS Inventory better?
Neither clearly leads. Sage X3 starts at $1500/month and SOS Inventory at $69.95/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Sage X3 or SOS Inventory?
Sage X3 starts at $1500/month and SOS Inventory at $69.95/month.
Does Sage X3 or SOS Inventory run on more platforms?
Sage X3 runs on Cloud, Windows, Web. SOS Inventory runs on Web, Cloud-based.
What is Sage X3 best used for?
Sage X3 is most often used for a group with subsidiaries in several countries consolidating from separate accounting systems into one ledger, a food or chemical manufacturer needing lot traceability and formulation alongside standard financials, a distributor with multiple warehouses and complex customer specific pricing that spreadsheets no longer contain, a business that has outgrown a small business accounting package but cannot justify a tier one erp programme. Of those, a group with subsidiaries in several countries consolidating from separate accounting systems into one ledger and a food or chemical manufacturer needing lot traceability and formulation alongside standard financials are not what SOS Inventory is typically brought in for.
What can Sage X3 do that SOS Inventory cannot?
Sage X3 covers Multi-company and multi-legislation finance, Inventory and warehouse, Purchasing, Sales and pricing. SOS Inventory covers Lot tracking, Serial numbers, Multi-location, QuickBooks Online. Both handle Manufacturing.

Answered from the vendors’ own pages

Sage X3: Is Sage X3 a cloud product?

It is offered as a hosted subscription, commonly on AWS, but it is not a multi-tenant SaaS product in the way Plex or NetSuite are. You still have your own instance and you still own the upgrade decision, which is both more control and more work.

SOS Inventory: How much does SOS Inventory cost?

SOS Inventory offers monthly plans from $69.95 for Companion to $194.95 for Pro. Annual billing saves approximately two months of fees. Additional users cost $25/month, and external connections are $25/month each.

Source
Sage X3: How do I choose a partner?

Ask for two references at your revenue, in your industry, on the version you are buying, and speak to them without the partner present. Ask who specifically will be on your project, how long they have worked on X3, and what happens if they leave mid engagement.

SOS Inventory: Does SOS Inventory offer a free trial?

Yes, SOS Inventory offers 14 days to explore its full range of features. Users can upgrade or downgrade plans easily through account settings.

Source
Sage X3: Does the licence cost tell me what the project costs?

No. For mid-market ERP the services bill commonly matches or exceeds the first year of software, and the subscription clock usually starts before go live, so the first year of licence buys considerably less usable time than it appears to.

SOS Inventory: What is the difference between SOS Inventory plans?

Companion includes 2 users and basic management. Plus is marked most popular and adds unlimited locations and lot tracking with 3 users. Pro adds advanced automation and manufacturing with 5 users.

Source
Sage X3: Who should not buy X3?

A single entity operating in one country, because the multi-company and multi-legislation depth is the main reason to pay for this rather than something simpler, and a business paying for it without using it has overbought.

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