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Research · head to head

Medidata Rave vs Obsidian

Medidata Rave logo

Medidata Rave

Research

Electronic data capture for regulated clinical trials, sold only through a sales process

From
On request
Rated
-
Full reviewWebsite
Obsidian logo

Obsidian

Research

A powerful knowledge base on top of a local folder of plain text Markdown files

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Obsidian has a free tier, so it costs nothing to try first.
  • Each has a real cost: Medidata Rave no pricing is published at all, so a first time sponsor cannot budget a study without entering a sales process and usually cannot benchmark the quote against anything.; Obsidian sync is a paid add-on at $4 per month billed annually rather than part of the app
  • They diverge on capability: Medidata Rave covers Case report form design, Obsidian covers Bidirectional linking.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Medidata Rave and Obsidian actually diverge.

Attributes where Medidata Rave and Obsidian differ
AttributeMedidata RaveObsidian
Starting priceOn requestFree
Pricing modelquoteUnknown
Free tierNoYes
PlatformsWebWeb, Windows, macOS, Linux, iOS, Android
FoundedUnknown2020

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 Medidata Rave

  • Case report form design
  • Edit checks and queries
  • Part 11 audit trail
  • Rave Lite
  • Coding and safety
  • Platform integrations

Only in Obsidian

  • Bidirectional linking
  • Graph view visualization
  • Markdown support
  • Local file storage
  • Plugin ecosystem
  • Custom CSS themes
  • Templates
  • Search and tags

What people use each for

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

Medidata Rave

  • A sponsor running a registrational Phase III study where inspection readiness and a validated audit trail are non negotiablenot Obsidian
  • A biotech that wants its CRO to run data management and benefits from the CRO already having Rave trained staff and templatesnot Obsidian
  • A sponsor standardising forms across a programme so that a global library is reused rather than each study being built from scratchnot Obsidian
  • A device or Phase IV study where Rave Lite gives the same compliance posture at a lower configuration burdennot Obsidian

Obsidian

  • Local-first markdown note taking with no account requirednot Medidata Rave
  • Linking notes into a personal knowledge graphnot Medidata Rave
  • Syncing a vault across devices with end-to-end encryption on the paid add-onnot Medidata Rave
  • Publishing a public site from a vaultnot Medidata Rave
  • Extending the editor with community pluginsnot Medidata Rave

Where each one falls short

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

Medidata Rave

  • No pricing is published at all, so a first time sponsor cannot budget a study without entering a sales process and usually cannot benchmark the quote against anything.
  • Cost is dominated by study build rather than licence, and every protocol amendment that changes a form triggers billable rework, so a study with unstable protocols costs far more than the initial quote implied.
  • Configuration requires trained specialists, so most sponsors cannot build a study in house and are dependent on Medidata professional services or a CRO, which lengthens startup.
  • The system assumes a professional clinical data management function; a small sponsor without data managers will not operate it directly and will pay a CRO to do so.
  • Deep use of the wider Medidata platform for randomisation, imaging and patient reported data creates commercial lock in, because moving EDC later means unpicking integrations that were bought as one bundle.

Obsidian

  • Sync is a paid add-on at $4 per month billed annually rather than part of the app
  • Publishing to the web is a further $8 per month per site
  • Commercial use asks for a $50 per user per year licence, though the vendor states it is not required
  • Collaboration is limited compared with a hosted notes tool, since the vault is local files first

Pricing, plan by plan

Medidata Rave

On request
  • Medidata Rave EDC$undefined/year
    • Priced per study through a sales process
    • Study build and configuration charged separately from licence
    • Mid study amendments generally billable

Obsidian

Free
  • Obsidian Sync$4/month
    • Sync notes across devices
  • Obsidian Publish$8/month
    • Turn notes into a website

Which should you pick?

Choose Medidata Rave if

  • You need case report form design.
  • You also want edit checks and queries.
Medidata Rave review

Choose Obsidian if

  • You need bidirectional linking.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux, iOS, Android.
  • You also want graph view visualization.
Obsidian review

Questions people ask

Is Medidata Rave or Obsidian better?
Neither clearly leads. Medidata Rave starts at On request and Obsidian at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Medidata Rave or Obsidian?
Obsidian has a free tier; the other does not. Paid plans start at On request for Medidata Rave and Free for Obsidian.
Does Medidata Rave or Obsidian run on more platforms?
Medidata Rave runs on Web. Obsidian runs on Web, Windows, macOS, Linux, iOS, Android.
Can I use Obsidian for free?
Yes. Obsidian has a free tier, so you can try it without paying. Medidata Rave starts at On request.
What is Medidata Rave best used for?
Medidata Rave is most often used for a sponsor running a registrational phase iii study where inspection readiness and a validated audit trail are non negotiable, a biotech that wants its cro to run data management and benefits from the cro already having rave trained staff and templates, a sponsor standardising forms across a programme so that a global library is reused rather than each study being built from scratch, a device or phase iv study where rave lite gives the same compliance posture at a lower configuration burden. Of those, a sponsor running a registrational phase iii study where inspection readiness and a validated audit trail are non negotiable and a biotech that wants its cro to run data management and benefits from the cro already having rave trained staff and templates are not what Obsidian is typically brought in for.
What can Medidata Rave do that Obsidian cannot?
Medidata Rave covers Case report form design, Edit checks and queries, Part 11 audit trail, Rave Lite. Obsidian covers Bidirectional linking, Graph view visualization, Markdown support, Local file storage.

Answered from the vendors’ own pages

Medidata Rave: Who owns Medidata?

Dassault Systemes, which acquired Medidata in 2019. Rave is sold as part of the Dassault life sciences portfolio.

Obsidian: Is Obsidian free?

Yes. The core Obsidian application is 100% free for personal and commercial use with no limitations. You can use unlimited vaults and every core feature without payment.

Source
Medidata Rave: How is Rave priced?

Per study, through a sales process. Nothing is published, and study build and amendments are charged separately from the licence.

Obsidian: What file format does Obsidian use?

Obsidian stores every note as a plain Markdown file. Because it uses standard Markdown instead of a proprietary format, your notes remain portable and can be edited with many other Markdown editors.

Source
Medidata Rave: Is Rave validated out of the box?

Medidata supplies validation and qualification documentation, but the sponsor still owns study level user acceptance testing and its own validation evidence.

Obsidian: Can I collaborate with others in Obsidian?

The core application does not include built-in team collaboration features. However, Obsidian offers optional add-ons and can be used with version control systems or cloud storage for collaboration.

Source
Medidata Rave: What is Rave Lite for?

Lower complexity studies, typically Phase I, Phase IV and medical device, where a full study build is not justified.

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