Best Virtual Data Rooms of 2026

Updated October 9, 2026 By the BestDataRoom editorial team How we rate

Choosing a data room is mostly about your deal: how many parties need access, how sensitive the files are and how long the process runs. We compared 18 providers on the features that matter in a real transaction, checked their pricing and security credentials, and ranked them below.

Why trust us 18 data rooms compared side by side Same 5 rating criteria for every provider Pricing checked October 2026
Two colleagues reviewing deal documents on a laptop

Our top picks

Best overall Ellty logo

Ellty

4.8 Our editors scored it 4.8/5

From $149/mo · Free trial

Visit Ellty
Best for large M&A iDeals logo

iDeals

4.6 Our editors scored it 4.6/5

Custom pricing · Free trial

See the review
Best for security Datasite logo

Datasite

4.5 Our editors scored it 4.5/5

Custom pricing

See the review
Best budget pick Box logo

Box

4.1 Our editors scored it 4.1/5

From $15/user/mo · Free trial

See the review

The best virtual data rooms right now

Ranked by our overall rating. Click any provider for the full review.

Best overall

1. Ellty

Ellty brings the diligence features buyers expect from the enterprise names, including group-level permissions, a structured question log, watermarks applied on every view, rights control over downloads and printing, and a record of each action in the room.

4.8 Our rating Our editors scored it 4.8/5 Visit Ellty Read our Ellty review

Pros

  • List price starts at $149/mo
  • 14-day free trial
  • AI assistance included
  • Bidder Q&A inside the room

Cons

  • ISO 27001 not held
  • SSO not offered
  • No developer API
Starting price
$149/mo
Free trial
Yes
Security
SOC 2
Deployment
Cloud
Best for multi-bidder M&A with heavy Q&A

2. iDeals

iDeals is built for advisers and deal teams handling many bidders, many jurisdictions and heavy Q&A traffic.

4.6 Our rating Our editors scored it 4.6/5 See the review Free trial available

Pros

  • You can start on a free trial
  • Holds both SOC 2 and ISO 27001
  • Bidder Q&A inside the room
  • Viewer watermarks plus per-file rights

Cons

  • Price only on request
  • No phone app
  • Hosted in the cloud only
Starting price
Custom quote
Free trial
Yes
Security
SOC 2, ISO 27001
Deployment
Cloud
Best for large sell-side processes with many bidders

3. Datasite

Datasite is made for sell-side advisers and corporate development teams running large, competitive processes where reading bidder behaviour is half the job.

4.5 Our rating Our editors scored it 4.5/5 See the review Demo on request

Pros

  • Holds both SOC 2 and ISO 27001
  • AI assistance included
  • Bidder Q&A inside the room
  • Viewer watermarks plus per-file rights

Cons

  • Price only on request
  • No developer API
  • Hosted in the cloud only
Starting price
Custom quote
Free trial
No
Security
SOC 2, ISO 27001
Deployment
Cloud
Best for teams that want structured deal preparation

4. Ansarada

Ansarada fits advisers, corporate development teams and boards that want help preparing a deal, not just hosting it.

4.5 Our rating Our editors scored it 4.5/5 See the review Free trial available

Pros

  • You can start on a free trial
  • Holds both SOC 2 and ISO 27001
  • AI assistance included
  • Bidder Q&A inside the room

Cons

  • Price only on request
  • No developer API
  • No phone app
Starting price
Custom quote
Free trial
Yes
Security
SOC 2, ISO 27001
Deployment
Cloud
Best for advisers opening many rooms each year

6. Firmex

Firmex suits boutique advisers, law firms and accountants who open several data rooms a year and want something dependable that clients learn in minutes.

4.4 Our rating Our editors scored it 4.4/5 See the review Free trial available

Pros

  • You can start on a free trial
  • Holds both SOC 2 and ISO 27001
  • Bidder Q&A inside the room
  • Viewer watermarks plus per-file rights

Cons

  • Price only on request
  • SSO not offered
  • No developer API
Starting price
Custom quote
Free trial
Yes
Security
SOC 2, ISO 27001
Deployment
Cloud

See all 18 data rooms ranked

Compare the top data rooms

Key facts at a glance. Prices are starting prices and may change.

Data roomOur ratingStarting priceFree trialSOC 2ISO 27001Q&AWatermarkingSSO
4.8/5 $149/mo ✓✓✕ ✓✓✕
4.6/5 Custom quote ✓✓✓ ✓✓✓
4.5/5 Custom quote ✕✓✓ ✓✓✓
4.5/5 Custom quote ✓✓✓ ✓✓✓
4.4/5 Custom quote ✕✓✓ ✓✓✓
4.4/5 Custom quote ✓✓✓ ✓✓✕
4.3/5 Custom quote ✕✓✓ ✓✓✕
4.3/5 Custom quote ✕✓✓ ✓✓✕
4.2/5 Custom quote ✓✓✓ ✓✓✕
4.1/5 $15/user/mo ✓✓✓ ✕✓✓

What is a virtual data room?

A virtual data room (VDR) is a locked-down website for confidential files: a company uses it to let buyers, investors, lenders or auditors review documents while it decides, file by file, what each of them may see.

Think of it as the digital version of the locked room that lawyers once filled with binders during an acquisition. The documents are the same: contracts, financial statements, cap tables, leases, patents, employee records. The difference is that reviewers can be anywhere, every action is recorded, and the owner can change access in seconds.

Data rooms are used most during mergers and acquisitions, fundraising rounds, real estate transactions, licensing deals and restructurings: anywhere a third party needs to inspect sensitive files before money changes hands.

Read our full guide to virtual data rooms

How a data room works

  1. 1
    Build the index

    Create a numbered folder structure (corporate, finance, legal, HR, IP) and upload documents in bulk.

  2. 2
    Set permissions

    Group users by side and role, then choose who can view, download or print each folder.

  3. 3
    Invite the other side

    Guests accept the terms of access, sign in with two-factor login and start reviewing.

  4. 4
    Track and answer

    Follow activity reports, answer questions in the Q&A log and archive the full room at closing.

Why use a data room

Five practical reasons deal teams move confidential files out of email and shared drives.

1. Shorter diligence

Every party works from the same indexed set of files, so nobody waits for email attachments or chases the latest version of a contract.

2. Control after you share

You decide per group who can view, download or print, and you can revoke access the moment a bidder drops out.

3. A record of every action

The audit log shows which documents each party opened and for how long. That record helps in a dispute and tells you which bidders are serious.

4. One place for questions

A structured Q&A keeps hundreds of buyer questions out of inboxes, assigns them to the right person and keeps answers consistent.

5. A more credible process

Buyers and investors read a tidy, numbered room as a sign that the business is well run. A messy shared folder sends the opposite signal.

Find the best data room for your deal

Different deals need different features. Pick yours to see a shortlist.

All use cases

Selling a business

5 recommended providers

Mergers and acquisitions

5 recommended providers

Startup fundraising

4 recommended providers

Private equity

5 recommended providers

Real estate

4 recommended providers

Life sciences licensing

5 recommended providers

Legal and litigation

5 recommended providers

Board and investor reporting

4 recommended providers

IPO readiness

5 recommended providers

Restructuring and insolvency

6 recommended providers

Carve-outs and divestitures

5 recommended providers

Tenders and procurement

5 recommended providers

Audits and compliance reviews

5 recommended providers

Loan portfolio sales

5 recommended providers

Mining and natural resources

5 recommended providers

Cross-border deals

5 recommended providers

Features to look for in a data room

Grouped by the job each feature does, with a count of how many of our 18 tracked rooms include it.

Compare all features

Access and document control

  • Two-factor logina stolen password alone is not enough to get in 14/18
  • Dynamic watermarkingprints the reader's name across every page on screen 18/18
  • Document rights controlblock download, print or copy per group 15/18
  • Redactionhide personal or price-sensitive data inside the room 7/18
  • Single sign-onstaff sign in through the company identity provider 7/18

Running the deal

  • Q&A modulesends each buyer question to the person who can answer it, with a record 13/18
  • Audit traila timestamped record of every file each guest opened 18/18
  • E-signatureNDAs and closing papers get signed in the same place 5/18
  • AI toolsauto-indexing, search and summaries across large folders 5/18

Setup and admin

  • Bulk uploaddrag whole folder trees in and keep the structure 17/18
  • Public APIlink the room with a CRM or document system 6/18
  • Mobile appreview and approve from a phone during travel 4/18

Vendor and contract

  • SOC 2 report18 of the 18 rooms we track list one
  • ISO 27001 certificate12 of the 18 rooms we track list one
  • Published pricing8 of 18 show a price without a sales call
  • Free trial13 of 18 let you test before paying

Data room vs Google Drive, Dropbox and OneDrive

File-sharing tools are built for teams working together. Data rooms are built for letting outsiders look without losing control. Here is where the difference shows.

Full comparison
CapabilityVirtual data roomGoogle DriveDropboxOneDrive
Built for Confidential deals with outside parties Everyday team collaborationFile sync and sharingMicrosoft 365 file storage
Per-folder permissions by group Standard Basic sharing rolesBasic sharing rolesBasic sharing roles
Dynamic watermark with viewer name Standard Not built inLimited, plan-dependentNot built in
Page-level view analytics Standard Basic activity on some plansBasic activity on some plansBasic activity on some plans
Full audit trail for outside users Standard, exportable Admin logs on business plansAdmin logs on business plansAdmin logs via Microsoft 365
Structured Q&A workflow Common NoNoNo
Terms of access on first login Common NoNoNo
Auto-numbered index Common NoNoNo
Archive handed over at closing Common Manual exportManual exportManual export

General capabilities as of October 2026. File-sharing features differ by plan; check your own subscription. "Common" means most dedicated data rooms offer it, not all.

How we rate data rooms

We mark each room from 0 to 10 against five tests, weight the marks, and show the result as a rating out of 5.

Read our methodology
  1. 30%

    Deal features

    Q&A, permissions, indexing, reporting: the tools a live deal leans on.

  2. 25%

    Security

    Certifications, encryption, watermarking, access control and audit trail.

  3. 20%

    Ease of setup

    How fast a new admin can open a room and invite the other side.

  4. 15%

    Pricing clarity

    Published prices, predictable bills, no surprise overage.

  5. 10%

    Support

    Response time and quality when something breaks mid-deal.

How to choose a virtual data room

Six steps that take you from a long list of vendors to a signed contract. Not sure where to start? Our 4-question quiz suggests three rooms for your deal, and the pricing calculator estimates the cost.

  1. Describe the deal

    Note the kind of deal, the number of outside firms joining, the rough document count and the expected timetable.

  2. List your must-have features

    Split the true essentials, say Q&A, watermarks or redaction, from the extras that would merely be pleasant.

  3. Check security evidence

    Request the latest SOC 2 report or ISO 27001 certificate, check that 2-step verification is on, and find out which country holds your files.

  4. Pick a billing model that fits

    Flat monthly suits most small and mid-sized deals, per-page billing suits light document sets and per-project quotes suit large auctions. Run your numbers through a calculator.

  5. Test it with real files

    On a free trial or demo, load an actual set of deal folders, add a colleague with guest rights and work through the Q&A and reports.

  6. Confirm support and exit terms

    Ask about response times, help with setup, extension fees and how the closing archive is handed over, before you sign.

Read the step-by-step buying guide

Latest guides

View all guides
how to

Data room checklist for due diligence: what to load, and in which wave

October 9, 2026 how to

Data room index template: a numbering scheme you can copy

October 9, 2026 comparisons

Data room or Google Drive and Dropbox? Where shared folders break down in a deal

October 9, 2026

Frequently asked questions

Which virtual data room is best in 2026?

Ellty holds the top overall rating in our comparison (4.8 of 5), followed closely by iDeals and Datasite. Your own deal still decides: a seed round, a sell-side auction and a licensing deal need different things, so check the use-case shortlists too.

How much does a virtual data room cost?

Where prices are printed, they begin at roughly $15 to $300 a month. Enterprise vendors scope each project, and mid-market deals tend to land in the low thousands to low tens of thousands of dollars. Use these numbers as a rough guide and get a written figure from the vendor.

Are virtual data rooms secure?

Run properly, a room beats email or a shared drive by a wide margin: files are encrypted, each view goes into a log, and you can watermark, block downloads and cut access at any time. Security still varies between vendors, so look for independent evidence. 18 of the 18 rooms we track list a SOC 2 report and 12 list ISO 27001.

What are the downsides of using a virtual data room?

Cost comes first: a room is a paid tool, and quote-based contracts can add overage or extension fees. Setup also takes effort, since someone has to build the index and set permissions. Strict controls like blocked downloads can slow reviewers down, and guests have to learn a new interface.

Can Dropbox work as a data room?

Not really. Dropbox syncs and shares files. It can hold deal documents, but it is not built around outside reviewers, so features like per-viewer watermarks, a deal Q&A log, terms of access and a complete audit trail for guests are missing or limited. For a small, low-risk exchange it can be enough; for due diligence, a purpose-built room carries less risk.

How quickly can a data room be ready?

With self-serve signup, the room itself exists within minutes, and guests can come in the same day if your files are already sorted. Collecting and indexing documents is the slow part; for a mid-sized sale, budget one to three weeks. Vendors that quote may put a sales call and onboarding in front of that.

Do providers pay to be ranked?

No. A few links here earn us a commission (we flag that in the footer and on the disclosure page), yet each provider goes through one identical five-part scoring. Our full method is on the How we rate page.