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Research · head to head

Benchling vs Castor EDC

Benchling logo

Benchling

Research

R&D cloud for biotechnology research and molecular biology

From
Free
Rated
-
Full reviewWebsite
Castor EDC logo

Castor EDC

Research

Electronic data capture and eConsent for clinical trials, built for investigator-initiated studies as well as sponsors

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Benchling has a free tier, so it costs nothing to try first.
  • Each has a real cost: Benchling enterprise pricing is not published and is widely reported as expensive relative to general-purpose research tools; Castor EDC nothing is published: pricing is quoted only after a scoping call and protocol review, so budgeting a grant application means asking for a quote months before the study is funded and hoping the scope holds.
  • They diverge on capability: Benchling covers Electronic lab notebook, Castor EDC covers Browser-based study build.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Benchling and Castor EDC actually diverge.

Attributes where Benchling and Castor EDC differ
AttributeBenchlingCastor EDC
Starting priceFreeOn request
Pricing modelFree for academics, quoted for organisationsquote
Free tierYesNo
PlatformsWeb, CloudWeb, iOS, Android

Identical on both: 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 Benchling

  • Electronic lab notebook
  • Molecular biology tools
  • Registry
  • Inventory
  • Workflows
  • Insights

Only in Castor EDC

  • Browser-based study build
  • 21 CFR Part 11 workflows
  • eConsent
  • ePRO and surveys
  • Randomisation
  • Per-study licensing
  • Grant-funded pricing paths
  • Data export

What people use each for

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

Benchling

  • Biotechnology research organisations working with sequences and constructs dailynot Castor EDC
  • Academic laboratories needing a shared electronic notebook at no costnot Castor EDC
  • Companies replacing paper notebooks and spreadsheet sample trackingnot Castor EDC
  • R&D organisations wanting research data structured enough to analyse laternot Castor EDC

Castor EDC

  • An academic hospital running an investigator-initiated trial that cannot fund a sponsor-grade EDC contract or a data management CROnot Benchling
  • A medical device company collecting post-market clinical follow-up data with Part 11 audit trailsnot Benchling
  • A multi-site registry that needs remote eConsent because participants are recruited nationally rather than at a clinicnot Benchling
  • A biotech running a small phase two study that wants the database built by its own clinical team in weeks rather than commissionednot Benchling

Where each one falls short

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

Benchling

  • Enterprise pricing is not published and is widely reported as expensive relative to general-purpose research tools
  • Not a substitute for a regulated QC LIMS, and organisations that assume otherwise discover the gap during an inspection readiness review
  • The free academic tier is genuinely useful, which makes the jump to enterprise pricing feel steeper when a lab commercialises
  • Configuration of the registry and workflows is a real project for larger deployments, not a signup
  • Chemistry support is weaker than biology, so chemistry-led organisations should evaluate carefully

Castor EDC

  • Nothing is published: pricing is quoted only after a scoping call and protocol review, so budgeting a grant application means asking for a quote months before the study is funded and hoping the scope holds.
  • Price scales on protocol complexity rather than a simple unit, so two studies with the same participant count can be quoted very differently and there is no public benchmark to argue against.
  • Modules such as eConsent, ePRO and randomisation are quoted on top of the base platform, so the headline EDC figure is rarely the number that appears on the final proposal.
  • It is deliberately lighter than the full sponsor suites, so a study that grows into a global registrational programme needing integrated CTMS, safety, IRT and full trial supply management will need additional systems and the interfaces between them.
  • Regulatory responsibility does not transfer with the software: the platform supports Part 11 compliant workflows, but system validation for your intended use, SOPs and audit readiness remain your obligation and your cost, which sponsors new to EDC consistently underestimate.

Pricing, plan by plan

Benchling

Free
  • AcademicFree
    • ELN
    • Molecular biology tools
    • Sequence design
  • Enterprise$undefined/year
    • Registry
    • Inventory
    • Workflows

Castor EDC

On request
  • Castor EDC$undefined/year
    • Priced per study on protocol complexity, duration, sites and modules
    • 21 CFR Part 11 and ICH GCP workflows
    • eConsent, ePRO and randomisation modules quoted separately

Which should you pick?

Choose Benchling if

  • You need electronic lab notebook.
  • You want to start without paying.
  • You work on Web, Cloud.
  • You also want molecular biology tools.
Benchling review

Choose Castor EDC if

  • You need browser-based study build.
  • You work on Web, iOS, Android.
  • You also want 21 cfr part 11 workflows.
Castor EDC review

Questions people ask

Is Benchling or Castor EDC better?
Neither clearly leads. Benchling starts at Free and Castor EDC at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Benchling or Castor EDC?
Benchling has a free tier; the other does not. Paid plans start at Free for Benchling and On request for Castor EDC.
Does Benchling or Castor EDC run on more platforms?
Benchling runs on Web, Cloud. Castor EDC runs on Web, iOS, Android.
Can I use Benchling for free?
Yes. Benchling has a free tier, so you can try it without paying. Castor EDC starts at On request.
What is Benchling best used for?
Benchling is most often used for biotechnology research organisations working with sequences and constructs daily, academic laboratories needing a shared electronic notebook at no cost, companies replacing paper notebooks and spreadsheet sample tracking, r&d organisations wanting research data structured enough to analyse later. Of those, biotechnology research organisations working with sequences and constructs daily and academic laboratories needing a shared electronic notebook at no cost are not what Castor EDC is typically brought in for.
What can Benchling do that Castor EDC cannot?
Benchling covers Electronic lab notebook, Molecular biology tools, Registry, Inventory. Castor EDC covers Browser-based study build, 21 CFR Part 11 workflows, eConsent, ePRO and surveys.

Answered from the vendors’ own pages

Benchling: Is Benchling free?

For qualifying academic use, yes, and that tier is genuinely usable rather than a trial. Commercial organisations are quoted.

Castor EDC: Is there a free academic version?

No published free tier. There are academic, non-profit and grant-funded pricing paths, but each is quoted rather than self-service.

Benchling: Is it a LIMS?

Not in the regulated sense. It handles research sample tracking well, but laboratories needing inspected quality control testing should evaluate a traditional LIMS such as LabWare or STARLIMS.

Castor EDC: Is it 21 CFR Part 11 compliant?

It supports Part 11 compliant workflows with audit trails and electronic signatures. Validating the system for your specific use remains your responsibility.

Benchling: Why did it spread so quickly in biotech?

It treats sequences, plasmids and constructs as first-class objects rather than attachments. Scientists adopted it at the bench, which is unusual for research software and is why it arrived without procurement driving it.

Castor EDC: Do I need a programmer to build a study?

No. Case report forms are configured in the browser, which is the main reason academic groups adopt it.

Benchling: What does enterprise cost?

Not published, and reported as expensive. Budget for it as an enterprise platform rather than as a per-seat notebook.

Castor EDC: How long does a quote take?

Castor states a full pricing proposal within five business days of sharing the protocol.

Benchling: Does it support chemistry?

Less well than biology. Chemistry-led organisations should evaluate it carefully against tools built for that discipline.

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