Independent rankings of virtual data room software by deal type, security, price and region, updated every month. Start with the ranking that matches your deal.
See the top 10 overallThe 18 providers we score
The ten highest overall scores on our six weighted criteria. Each entry links to a full profile with the reasons behind every mark.
Complete diligence room with AI built in, a modern interface and a $149 monthly price printed openly.
Why it made the list Diligence toolkit 9.5/10 · Data protection 9.4/10 · Ease of adoption 9.8/10
Established UK-headquartered M&A room with deep security credentials and the best support marks we give.
Why it made the list Diligence toolkit 9.5/10 · Data protection 9.6/10
The investment-banking standard: the widest feature checklist we track, analytics and AI, priced by quote.
Why it made the list Diligence toolkit 9.5/10 · Data protection 9.6/10
Australian deal room built around readiness and governance, with AI tools and ISO 27001.
Veteran enterprise room for regulated, security-heavy deals, with ISO 27001 and redaction.
Dependable mid-market room from Canada, easy for outside reviewers and strong on support.
German room with deep real-estate roots, AI tools and an on-premises option for European deals.
Security-minded M&A room known for granular permissions and a disciplined Q&A workflow.
Enterprise content cloud with strong compliance and integrations, but no deal Q&A or redaction.
Client file sharing with built-in e-signature and HIPAA, popular with professional services firms.
Every list uses the same provider marks. What changes is the weighting, an entry rule and a few printed bonus points, so the order follows what each list values most.
| List | Weighted most on | Weight |
|---|---|---|
| Top 10 overall | Diligence toolkit | 26% |
| Most secure | Data protection | 45% |
| Best value | Cost predictability | 40% |
| M&A | Diligence toolkit | 38% |
| Startups and fundraising | Ease of adoption | 27% |
| Enterprise | Diligence toolkit | 30% |
| AI features | Diligence toolkit | 32% |
Same providers, same marks, different weights. Each list shows its entry rule and bonus points.
The overall leader is not the leader on every criterion. Some rooms carry the strongest data protection marks, others the easiest adoption or the most predictable bill. That spread is the reason we publish narrower lists: a buyer who weights one criterion heavily should see a different order.
Every mark traces back to the shared facts file and our 12-item checklist; how we rank lists the sources and weights.
See all provider reviewsWho leads each criterion
Ellty 9.5field average 8.3 iDeals 9.6field average 8.7 Ellty 9.8field average 8.1 Ellty 9.7field average 7.8 Datasite 8.3field average 6.0 iDeals 9.7field average 8.3 92vs90 Ellty vs iDeals Two full diligence rooms: published pricing and AI on one side, ISO 27001, SSO and redaction on the other. 90vs89 iDeals vs Datasite Two quote-priced enterprise rooms with matching certifications and different priorities. 89vs85 Datasite vs Intralinks Two veterans of enterprise M&A, with different answers on AI, mobile and day-to-day use. 84vs81 Firmex vs SmartRoom Two focused M&A rooms with redaction and ISO 27001; one leans toward ease, the other toward control. Published entry prices, lowest to highest
8 of the 18 providers we track publish an entry price; the rest quote per project. Flat monthly pricing keeps the bill steady however many outside parties log in, per-user pricing grows with every paid seat, and quotes bundle pages, term and service.
The pricing page turns your term and user count into totals for every published price, with labelled market ranges for quoted rooms.
Open the cost calculatorMost leading rooms share the core: permissions, watermarks, an audit trail and two-factor login. The differences show up in redaction, single sign-on, public APIs, mobile apps and AI. If one of those is a must for you, the feature checker filters all 18 providers in a click.
AI is the newest line on the checklist: 5 providers list it natively (Ellty, Datasite, Ansarada, Drooms, Box). Our AI data rooms page covers what it does and what to ask first.
Use the feature checkerWhere the top six differ
| Redaction | SSO | API | Mobile app | AI | |
|---|---|---|---|---|---|
| Ellty | – | – | – | – | ✓ |
| iDeals | ✓ | ✓ | ✓ | – | – |
| Datasite | ✓ | ✓ | – | ✓ | ✓ |
| Ansarada | – | ✓ | – | – | ✓ |
| Intralinks | ✓ | ✓ | – | – | – |
| Firmex | ✓ | – | – | – | – |
Five steps from a shortlist to a signed contract.
Find a data roomHow to choose a virtual data room
A certificate your security team insists on, a Q&A module for an auction, a published price, or AI for a very large room. That picks your list.
Read the entry rule and the weights card, then the first five entries. Treat scores within three points as ties.
Open their profiles and check the feature checklist and the gaps. If two are close, read the head-to-head page.
Run your term and user count through the pricing calculator, and ask quote-only vendors to price the same scope.
Use a free trial or a demo to check the admin setup, the reviewer view and the one workflow your deal depends on.
On our overall list for October 2026, Ellty ranks first, followed by iDeals and Datasite. The best room for you depends on your hardest requirement, which is why we keep separate lists for security, value, M&A, startups, enterprise, AI, ease of use, law firms, real estate and three regions.
A secure online workspace where a company shares confidential documents with outside parties such as buyers, investors, lenders or regulators. Compared with a shared drive it adds per-document permissions, view-only modes, dynamic watermarks, a Q&A workflow and a complete audit trail.
Every provider gets six marks out of 10: diligence toolkit, data protection, ease of adoption, cost predictability, checklist breadth and deal support. Each list weights those marks for its buyer, may require a feature and adds small bonuses that are printed on the list page.
Published entry prices among the providers we track run from $15 to $299 a month; most vendors quote per project. Our pricing page has a calculator and typical quote ranges, marked as estimates.
We evaluate from vendor documentation, published pricing, trial terms and security attestations, re-checked monthly. We do not present hands-on test results we do not have; where only a trial can answer a question, our pages give you the checklist.
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