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Inventory · head to head

SOS Inventory vs Tryton

SOS Inventory logo

SOS Inventory

Inventory

Inventory management for QuickBooks Online

From
$69.95/month
Rated
-
Full reviewWebsite
Tryton logo

Tryton

ERP

Modular open source ERP in Python with a five year support window on major releases only

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Tryton has a free tier, so it costs nothing to try first.
  • Each has a real cost: SOS Inventory the Companion plan at $69.95 per month is limited to a single location and 1 custom field; Tryton ordinary series are supported for only one year, so any deployment not pinned to a long term support major version needs a funded upgrade project every twelve months, which is the largest hidden cost of running Tryton.
  • They diverge on capability: SOS Inventory covers Lot tracking, Tryton covers Modular installation.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which SOS Inventory and Tryton actually diverge.

Attributes where SOS Inventory and Tryton differ
AttributeSOS InventoryTryton
Starting price$69.95/monthFree
Pricing modelsubscriptionOpen source, no licence fee
Free tierNoYes
PlatformsWeb, Cloud-basedWeb, Linux, Windows, macOS, Self-hosted
CategoryInventoryERP
Founded2011Unknown

Identical on both: 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 SOS Inventory

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

Only in Tryton

  • Modular installation
  • Double entry accounting
  • Inventory and supply chain
  • Sales and purchasing
  • Desktop and web clients
  • Multi-company
  • Project management
  • Subscriptions

Both cover

  • Manufacturing

What people use each for

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

SOS Inventory

  • Inventory managementnot Tryton
  • Job costingnot Tryton
  • Manufacturing automationnot Tryton

Tryton

  • A small European manufacturer that wants bills of materials and routings without a per user ERP subscriptionnot SOS Inventory
  • A company with in-house Python developers that intends to extend the data model rather than configure a closed productnot SOS Inventory
  • An organisation that will not adopt an open core product because it expects features to migrate to a paid edition over timenot SOS Inventory
  • A distributor needing multi-company books in one database with analytic accounting on topnot SOS Inventory

Where each one falls short

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

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

Tryton

  • Ordinary series are supported for only one year, so any deployment not pinned to a long term support major version needs a funded upgrade project every twelve months, which is the largest hidden cost of running Tryton.
  • There is no vendor to buy support from, only a list of independent service providers, so procurement teams that require a single accountable supplier with an SLA have to construct one themselves.
  • The module ecosystem is far smaller than Odoo or ERPNext, so region-specific tax rules, payroll and industry add-ons frequently have to be written rather than installed.
  • Out of the box reporting is thin and there is no built-in business intelligence layer, so most deployments end up exporting to an external tool to get management reporting.
  • Documentation and community discussion are functional but sparse compared with commercial ERPs, which lengthens implementation for teams that have not worked with Tryton before and makes hiring experienced consultants harder.

Pricing, plan by plan

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

Tryton

Free
  • Self-hostedFree
    • GPL-3.0-or-later licence with no per user cost
    • All official modules included
    • Series released every six months

Which should you pick?

Choose SOS Inventory if

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

Choose Tryton if

  • You need modular installation.
  • You want to start without paying.
  • You work on Web, Linux, Windows, macOS, Self-hosted.
  • You also want double entry accounting.
Tryton review

Questions people ask

Is SOS Inventory or Tryton better?
Neither clearly leads. SOS Inventory starts at $69.95/month and Tryton at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, SOS Inventory or Tryton?
Tryton has a free tier; the other does not. Paid plans start at $69.95/month for SOS Inventory and Free for Tryton.
Does SOS Inventory or Tryton run on more platforms?
SOS Inventory runs on Web, Cloud-based. Tryton runs on Web, Linux, Windows, macOS, Self-hosted.
Can I use Tryton for free?
Yes. Tryton has a free tier, so you can try it without paying. SOS Inventory starts at $69.95/month.
What is SOS Inventory best used for?
SOS Inventory is most often used for inventory management, job costing, manufacturing automation. Of those, inventory management and job costing are not what Tryton is typically brought in for.
What can SOS Inventory do that Tryton cannot?
SOS Inventory covers Lot tracking, Serial numbers, Multi-location, QuickBooks Online. Tryton covers Modular installation, Double entry accounting, Inventory and supply chain, Sales and purchasing. Both handle Manufacturing.

Answered from the vendors’ own pages

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
Tryton: What licence is Tryton under?

The platform and official modules are GPL-3.0-or-later. There is no paid enterprise edition.

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
Tryton: How long is a release supported?

Series are released every six months and supported for one year. Major versions get five years of long term support, so pin to an LTS release unless you can fund annual upgrades.

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
Tryton: Is there a hosted version from the project?

No. The foundation lists independent service providers who offer hosting and support commercially.

Tryton: How does it differ from Odoo?

Tryton has no open core split, so there is no paid edition holding back features, but the module ecosystem and partner network are much smaller.

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