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Research · head to head

Attest vs Chemaxon

Attest logo

Attest

Research

Straightforward pricing for predictable research costs

From
On request
Rated
-
Full reviewWebsite
Chemaxon logo

Chemaxon

Research

Cheminformatics toolkits and structure handling, now a Certara subsidiary

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Attest pricing is metered by credits, where one credit equals one survey question answered by one person, rather than a flat per seat rate; 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.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Attest and Chemaxon actually diverge.

Attributes where Attest and Chemaxon differ
AttributeAttestChemaxon
Pricing modelsubscriptionquote
PlatformsWebWeb, Windows, macOS, Linux, On-premise, API

Identical on both: starting price (On request), 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 Attest

Nothing recorded that Chemaxon does not also cover.

Only in Chemaxon

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

What people use each for

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

Attest

  • Testing product concepts with global audiencesnot Chemaxon
  • Monitoring brand health across campaignsnot Chemaxon
  • Validating creative concepts before launchnot Chemaxon
  • Researching market trends in 70 languagesnot Chemaxon

Chemaxon

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

Where each one falls short

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

Attest

  • Pricing is metered by credits, where one credit equals one survey question answered by one person, rather than a flat per seat rate
  • The Basic tier caps usage at 50,000 credits; going beyond it requires upgrading to Standard (100,000), Elite (200,000) or a custom plan above 400,000
  • Additional credits purchased mid year cost 10 percent more per credit than the plan rate

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.

Pricing, plan by plan

Attest

On request
  • Basic$undefined/mo
    • Up to 50,000 credits
  • Standard$undefined/mo
    • Up to 100,000 credits
  • Elite$undefined/mo
    • Up to 200,000 credits
  • Custom$undefined/mo
    • Over 400,000+ credits

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

Which should you pick?

Choose Attest if

Nothing in the data separates Attest from Chemaxon on the points above - pick on price and on how each one feels to use.

Attest review

Choose Chemaxon if

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

Questions people ask

Is Attest or Chemaxon better?
Neither clearly leads. Attest starts at On request and Chemaxon at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Attest or Chemaxon?
Attest starts at On request and Chemaxon at On request.
Does Attest or Chemaxon run on more platforms?
Attest runs on Web. Chemaxon runs on Web, Windows, macOS, Linux, On-premise, API.
What is Attest best used for?
Attest is most often used for testing product concepts with global audiences, monitoring brand health across campaigns, validating creative concepts before launch, researching market trends in 70 languages. Of those, testing product concepts with global audiences and monitoring brand health across campaigns are not what Chemaxon is typically brought in for.
What can Attest do that Chemaxon cannot?
Chemaxon covers Marvin, JChem toolkits, Calculator Plugins, Compound Registration.

Answered from the vendors’ own pages

Attest: How does Attest's credit system work?

Attest uses a credit-based pricing system where one credit equals one survey answer from one respondent. For example, a 10-question survey completed by 500 people uses 5,000 credits. Only respondents who meet survey criteria consume credits from the qualifying question.

Source
Chemaxon: Is Chemaxon still independent?

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

Attest: What plans does Attest offer?

Attest offers four subscription plans: Basic (up to 50,000 credits), Standard (up to 100,000 credits), Elite (up to 200,000 credits), and Custom (over 400,000+ credits). All plans include unlimited user seats, designated research expert, customer success team support, and access to 150+ million consumers across 59 countries in 70+ languages.

Source
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.

Attest: Can I purchase additional credits on Attest?

Yes. Additional credits are available as add-ons throughout the year. Add-on credits cost 10% more than the per-credit rate in annual plans.

Source
Chemaxon: Can I ship Chemaxon inside my own software?

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

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.

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