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Research · head to head

Chemaxon vs Valispace

Chemaxon logo

Chemaxon

Research

Cheminformatics toolkits and structure handling, now a Certara subsidiary

From
On request
Rated
-
Full reviewWebsite
Valispace logo

Valispace

Research

Requirements and systems engineering for hardware teams, with published per-seat pricing

From
$999/year
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Chemaxon the October 2024 Certara acquisition ended two decades of vendor neutrality, and organisations that embedded JChem precisely because Chemaxon competed with nobody now depend on a component owned by a company that sells into their accounts.; Valispace the three-seat minimum means a solo consultant or a two-person startup pays for a seat nobody uses, roughly 3,000 US dollars a year before anyone logs in.
  • They diverge on capability: Chemaxon covers Marvin, Valispace covers Live requirements.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Chemaxon and Valispace actually diverge.

Attributes where Chemaxon and Valispace differ
AttributeChemaxonValispace
Starting priceOn request$999/year
Pricing modelquotePer user per year
PlatformsWeb, Windows, macOS, Linux, On-premise, APIWeb, On-premise, API

Identical on both: free tier (No), user rating (Not yet rated), category (Research).

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 Chemaxon

  • Marvin
  • JChem toolkits
  • Calculator Plugins
  • Compound Registration
  • Instant JChem
  • Design Hub
  • Free academic package
  • Embedded redistribution

Only in Valispace

  • Live requirements
  • Budgets and margins
  • Component tree
  • Verification and validation
  • Python API and Jupyter
  • ValiAssistant
  • SSO and MFA

What people use each for

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

Chemaxon

  • A software vendor embedding a structure sketcher and search into its own product rather than writing chemistry codenot Valispace
  • A pharmaceutical informatics team building an internal compound registration system on JChem cartridgesnot Valispace
  • A computational chemistry group needing consistent pKa and logD prediction across a screening cascadenot Valispace
  • A university teaching cheminformatics that can use the free two-year academic package for a classnot Valispace

Valispace

  • A small satellite team keeping mass and power budgets live across a design cycle instead of rebuilding spreadsheets before each reviewnot Chemaxon
  • A drone manufacturer that needs requirement traceability for a certification authority but cannot justify an enterprise requirements databasenot Chemaxon
  • A university engineering department teaching systems engineering with real traceability under the flat education ratenot Chemaxon
  • An electronics-heavy hardware startup wanting requirements linked to the PCB design work happening in Altiumnot Chemaxon

Where each one falls short

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

Chemaxon

  • The October 2024 Certara acquisition ended two decades of vendor neutrality, and organisations that embedded JChem precisely because Chemaxon competed with nobody now depend on a component owned by a company that sells into their accounts.
  • Licensing is genuinely complicated, with different terms for named users, servers, desktop applications and embedded redistribution, so working out what you are allowed to deploy usually requires a conversation rather than reading a document.
  • The free academic package is granted for two-year terms and covers education rather than research, so a research group that assumed it was free discovers it needs a paid commercial academic licence.
  • Nothing is priced publicly for commercial use, so a team evaluating Chemaxon against open source alternatives such as RDKit cannot compare total cost without entering a sales process.
  • Open source cheminformatics has closed much of the functional gap for basic structure handling and search, so the commercial case increasingly rests on prediction quality, support and registration workflows rather than on capability that cannot be obtained elsewhere.

Valispace

  • The three-seat minimum means a solo consultant or a two-person startup pays for a seat nobody uses, roughly 3,000 US dollars a year before anyone logs in.
  • Ownership has changed twice in two years, from independent to Altium to Renesas by way of the Altium acquisition, and the technology has been repackaged as the Altium Requirements Portal, so the standalone roadmap is genuinely uncertain.
  • It is not a certified DO-178C or ARP4754 toolchain component in the way established requirements databases are, so highly regulated aerospace programmes may still need a recognised tool alongside it.
  • The parametric model rewards teams who structure their data properly at the start; teams that import a flat requirement list get a slower version of a document tool and none of the budget automation.
  • Integration depth outside the Altium and Jira world is limited, so linking to an existing PLM or a CAD-driven mass properties source usually means writing against the Python API yourself.

Pricing, plan by plan

Chemaxon

On request
  • Academic package$undefined/year
    • Free of charge for education for a two-year term
    • Covers a class including tutor and students, or an applicant faculty
    • Non-commercial research use only
  • Commercial licence$undefined/year
    • Quoted per named user, per server or per redistributed application
    • Toolkits, desktop applications and embedded redistribution licensed separately
    • Annual support and maintenance included in the subscription

Valispace

$999/year
  • Valispace$999/year
    • Minimum three users
    • Requirements, components, V&V and analysis modules
    • ValiAssistant AI beta
  • Enterprise$undefined/year
    • On-premise deployment option
    • Staging servers with controlled update timing
    • Advanced support terms
  • Education$1000/year
    • Flat annual rate for an institution
    • Unlimited students and professors
    • Non-commercial projects only

Which should you pick?

Choose Chemaxon if

  • You need marvin.
  • You work on Web, Windows, macOS, Linux, On-premise, API.
  • You also want jchem toolkits.
Chemaxon review

Choose Valispace if

  • You need live requirements.
  • You work on Web, On-premise, API.
  • You also want budgets and margins.
Valispace review

Questions people ask

Is Chemaxon or Valispace better?
Neither clearly leads. Chemaxon starts at On request and Valispace at $999/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Chemaxon or Valispace?
Chemaxon starts at On request and Valispace at $999/year.
Does Chemaxon or Valispace run on more platforms?
Chemaxon runs on Web, Windows, macOS, Linux, On-premise, API. Valispace runs on Web, On-premise, API.
What is Chemaxon best used for?
Chemaxon is most often used for a software vendor embedding a structure sketcher and search into its own product rather than writing chemistry code, a pharmaceutical informatics team building an internal compound registration system on jchem cartridges, a computational chemistry group needing consistent pka and logd prediction across a screening cascade, a university teaching cheminformatics that can use the free two-year academic package for a class. Of those, a software vendor embedding a structure sketcher and search into its own product rather than writing chemistry code and a pharmaceutical informatics team building an internal compound registration system on jchem cartridges are not what Valispace is typically brought in for.
What can Chemaxon do that Valispace cannot?
Chemaxon covers Marvin, JChem toolkits, Calculator Plugins, Compound Registration. Valispace covers Live requirements, Budgets and margins, Component tree, Verification and validation.

Answered from the vendors’ own pages

Chemaxon: Is Chemaxon still independent?

No. It has been a subsidiary of Certara since October 2024. The products continue under the Chemaxon name.

Valispace: Who owns Valispace?

Altium acquired it in December 2023, and Renesas Electronics acquired Altium in 2024. It is therefore a Renesas-owned product, despite frequent reports elsewhere linking it to defence groups.

Chemaxon: Is the academic licence really free?

The education package is free for two-year terms covering a class or faculty. Non-commercial research groups pay a discounted commercial academic licence.

Valispace: Is it the same thing as the Altium Requirements Portal?

They share a lineage. Requirements Portal is the Altium 365 packaging of Valispace technology. The standalone Valispace product is still sold with its own pricing.

Chemaxon: Can I ship Chemaxon inside my own software?

Yes, but embedded redistribution is licensed separately from internal use and must be negotiated.

Valispace: What does it actually cost?

999 US dollars per user per year with a minimum of three users, billed annually. Enterprise with on-premise deployment is quoted separately.

Chemaxon: How does it compare with RDKit?

RDKit is free and covers basic structure handling well. Chemaxon differentiates on property prediction, registration workflows, the sketcher and commercial support.

Valispace: Can it replace a requirements database like DOORS?

For small and mid-sized hardware programmes, often yes. For programmes with contractual tool mandates, no.

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