Softwr

Research · head to head

Chemaxon vs Greenphire

Chemaxon logo

Chemaxon

Research

Cheminformatics toolkits and structure handling, now a Certara subsidiary

From
On request
Rated
-
Full reviewWebsite
Greenphire logo

Greenphire

Research

Clinical trial participant payments, reimbursement and travel, now part of Suvoda

From
On request
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.; Greenphire the standalone greenphire.com site now redirects to Suvoda and the brands have been integrated, so buyers are contracting with a randomisation and supply vendor and should expect cross selling rather than an independent payments specialist.
  • They diverge on capability: Chemaxon covers Marvin, Greenphire covers ClinCard.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Chemaxon and Greenphire actually diverge.

Attributes where Chemaxon and Greenphire differ
AttributeChemaxonGreenphire
PlatformsWeb, Windows, macOS, Linux, On-premise, APIWeb, iOS, Android

Identical on both: starting price (On request), pricing model (quote), 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 Greenphire

  • ClinCard
  • Direct to bank payment
  • Expense reimbursement
  • Travel and logistics
  • Site payments
  • Budgeting and benchmarking
  • Tax handling

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 Greenphire
  • A pharmaceutical informatics team building an internal compound registration system on JChem cartridgesnot Greenphire
  • A computational chemistry group needing consistent pKa and logD prediction across a screening cascadenot Greenphire
  • A university teaching cheminformatics that can use the free two-year academic package for a classnot Greenphire

Greenphire

  • A global Phase III trial paying stipends across many countries where participants cannot practically be reimbursed by sponsor accounts payablenot Chemaxon
  • A decentralised or hybrid trial where participants travel long distances and the sponsor funds flights and accommodationnot Chemaxon
  • A trial in a population where slow reimbursement drives dropout and same day payment materially helps retentionnot Chemaxon
  • A sponsor that wants site payment milestones and participant payments handled by one vendor rather than twonot 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.

Greenphire

  • The standalone greenphire.com site now redirects to Suvoda and the brands have been integrated, so buyers are contracting with a randomisation and supply vendor and should expect cross selling rather than an independent payments specialist.
  • Nothing is published on price, and the typical shape of a platform fee plus per participant and per transaction charges means the cost of a trial is not knowable until enrolment is known.
  • Payment method availability varies sharply by country, so a global protocol may end up with card payments in some regions and slow manual processes in others, which undermines the retention argument that justified the purchase.
  • Sites bear the administrative work of enrolling participants and triggering payments but are not the buyer, so adoption depends on the sponsor mandating it and site resistance is a real implementation risk.
  • Participant payments create tax reporting obligations that differ per jurisdiction, and the tooling helps but does not remove sponsor liability, so legal and finance review is required in every country the trial runs in.

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

Greenphire

On request
  • Greenphire Patient Payments$undefined/year
    • Priced per study through a sales process
    • Typically a platform fee plus per participant and per transaction charges
    • Funding of the payment float is separate from the software fee

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 Greenphire if

  • You need clincard.
  • You work on Web, iOS, Android.
  • You also want direct to bank payment.
Greenphire review

Questions people ask

Is Chemaxon or Greenphire better?
Neither clearly leads. Chemaxon starts at On request and Greenphire at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Chemaxon or Greenphire?
Chemaxon starts at On request and Greenphire at On request.
Does Chemaxon or Greenphire run on more platforms?
Chemaxon runs on Web, Windows, macOS, Linux, On-premise, API. Greenphire runs on Web, iOS, Android.
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 Greenphire is typically brought in for.
What can Chemaxon do that Greenphire cannot?
Chemaxon covers Marvin, JChem toolkits, Calculator Plugins, Compound Registration. Greenphire covers ClinCard, Direct to bank payment, Expense reimbursement, Travel and logistics.

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.

Greenphire: Is Greenphire still sold?

Yes, as Greenphire Patient Payments on the Suvoda platform. The independent website and social presence have been consolidated into Suvoda.

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.

Greenphire: What is ClinCard?

The reloadable debit card Greenphire issues to participants. Greenphire Patient Payments was formerly known as ClinCard.

Chemaxon: Can I ship Chemaxon inside my own software?

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

Greenphire: Does it publish pricing?

No. Pricing is per study and quoted through sales, and funding the payments themselves is separate from the software fee.

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.

Greenphire: Can it pay participants outside the United States?

Yes, in more than thirty currencies, but the available payment method depends on the country.

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