Every e-signature product on this list produces a legally binding signature in the US, UK, EU, Canada and Australia. That is settled law, not a feature difference, and any vendor implying otherwise is marketing at you.
What actually differs is volume limits, whether signing feels like an obstacle, what happens when a signer opens the email on a phone, and how much you pay when your usage doubles. Those are the things to compare.
The Legal Position, Briefly
Worth getting straight because it removes a whole category of vendor claims.
Electronic signatures are legally recognised under the US ESIGN Act and state UETA legislation, the EU’s eIDAS Regulation, the UK’s Electronic Communications Act, and equivalent legislation in Canada and Australia.
Two practical caveats:
eIDAS defines tiers. Simple, advanced and qualified electronic signatures carry different evidential weight in the EU. Most business contracts are fine with a simple or advanced signature. A few situations require a qualified signature backed by a certificate from a trust service provider — if you operate in the EU in a regulated area, check whether that applies to you.
Some documents are excluded almost everywhere. Wills, certain family law documents, some property instruments and various court filings typically require wet ink or notarisation. Jurisdictions differ. Confirm before assuming.
For ordinary commercial agreements — proposals, engagement letters, NDAs, employment contracts, invoices — any product below is legally sufficient.
The Ten
1. DocuSign
The category default, and the name your clients will recognise, which genuinely reduces friction when you send a contract to someone cautious.
Documented features include templates, bulk send, in-person signing, a detailed audit certificate and extensive integrations.
Watch: envelope limits. DocuSign plans allocate a number of envelopes per user per year, and exceeding them costs more. An envelope is one document package sent to one or more signers — model your real volume before choosing a tier.
2. Dropbox Sign (formerly HelloSign)
Rebranded from HelloSign after Dropbox acquired it. Cleaner and simpler than DocuSign, with a signing experience that non-technical recipients complete without confusion.
Suits: businesses wanting straightforward signing without a platform. Strong if you already use Dropbox.
3. Adobe Acrobat Sign
The obvious choice if you already pay for Acrobat, and the strongest option when your documents genuinely are PDFs that need editing as well as signing.
Watch: licensing is layered on top of Creative Cloud or Acrobat plans in ways that are not always obvious. Confirm what your existing subscription includes.
4. PandaDoc
Not really an e-signature tool — it is proposal software with signing attached. Documents are built from content blocks with pricing tables that calculate, and you get analytics on which sections the recipient actually read.
Suits: anyone sending sales proposals or quotes. If your signed documents are proposals, this replaces two tools.
5. Zoho Sign
Good value, and compelling if you already run Zoho. Integrates properly across their suite rather than nominally.
6. SignNow
Part of the airSlate family, positioned on price with a reasonable feature set including templates and bulk sending.
Suits: higher volume on a smaller budget.
7. Yousign
European, built around eIDAS compliance including qualified electronic signatures, with EU data residency.
Suits: EU businesses with data residency requirements or a need for qualified signatures.
8. Signaturely
Deliberately minimal, with a free tier that covers a small number of documents per month.
Suits: businesses signing a handful of documents monthly.
9. Documenso
Open source and self-hostable. You run it, you own the data, no per-envelope cost.
Suits: technical teams with data sovereignty requirements. Watch: you own uptime, updates and the audit trail’s integrity — which is the part that matters if a signature is ever disputed.
10. Xodo Sign (formerly eversign)
Solid mid-market option with templates, in-person signing and a usable free tier.
How They Compare
| Product | Best for | Free tier | Notable |
|---|---|---|---|
| DocuSign | Recognition, enterprise clients | Trial only | Envelope limits apply |
| Dropbox Sign | Simplicity | Limited | Clean signer experience |
| Adobe Acrobat Sign | Existing Adobe users | Trial only | Full PDF editing |
| PandaDoc | Sales proposals | Limited | Pricing tables, read analytics |
| Zoho Sign | Zoho users, value | Limited | Suite integration |
| SignNow | Volume on a budget | Trial only | Lower cost per user |
| Yousign | EU compliance | Trial only | Qualified signatures, EU hosting |
| Signaturely | Very low volume | Yes | Minimal by design |
| Documenso | Self-hosting | Open source | You own the audit trail |
| Xodo Sign | Mid-market | Yes | Templates, in-person signing |
Pricing is per user per month with volume limits layered on, and it changes regularly. Verify current pricing and — more importantly — current envelope or document limits directly with each vendor.
What Actually Matters When Choosing
Count your real volume. Most small businesses send far fewer documents than they estimate, and then pick a plan sized for the estimate. Count last quarter’s actual signed documents.
Test the signer experience on a phone. Send yourself a document and open it on mobile. A large share of signers do this. If it requires pinch-zooming to find the signature field, expect chased emails.
Check the audit trail. Every product produces one; they vary in detail. It should record signer identity, email, IP address, timestamps for viewing and signing, and a document hash. This is the evidence if a signature is ever challenged, and it is the only part of the product that matters at the moment you need it most.
Look at templates if you send the same thing repeatedly. Rebuilding an NDA from scratch each time is the friction that makes people abandon the tool.
Check integration with what you already run. Signing from inside your CRM or proposal tool beats a separate login.
Common Mistakes to Avoid
- Buying on features rather than volume limits. The limit is what you will hit, not the feature list.
- Not testing on mobile. A confusing mobile signing flow costs you deals and chasing time.
- Assuming every document can be e-signed. Wills, some property and family law documents and certain filings are excluded in many jurisdictions.
- Ignoring the audit trail until you need it. Download one from a test document and read it. If it is thin, that is your evidence in a dispute.
- Sending a signature request from a personal email domain. Signers are wary. Use your business domain and brand the request.
- Self-hosting without understanding the responsibility. If you host it, the integrity of the audit trail is your problem.
- Not storing signed copies elsewhere. Keep executed documents in your own storage, not only in the vendor’s account.
FAQs
Are electronic signatures legally binding?
Yes, in the US under ESIGN and UETA, in the EU under eIDAS, in the UK under the Electronic Communications Act, and under equivalent legislation in Canada and Australia. Certain document types — wills, some property and family law instruments — are commonly excluded, and requirements vary by jurisdiction.
What is the difference between a simple and a qualified electronic signature?
An eIDAS distinction. Simple and advanced signatures cover most commercial agreements. A qualified electronic signature uses a certificate from a trust service provider and carries the strongest evidential weight in the EU. Most businesses do not need one; some regulated situations do.
What is an envelope?
One document package sent for signature, which may contain several documents and several signers. DocuSign and others meter usage this way, so the limit is on packages sent, not pages or signers.
Is there a genuinely free e-signature tool?
Signaturely, Xodo Sign and Zoho Sign have free tiers with monthly document limits, and Documenso is open source if you self-host. Free tiers suit low volume; they are not a business plan if you sign regularly.
Can I just use a scanned signature image?
You can paste an image into a PDF, and it is a much weaker position if challenged. E-signature platforms create an audit trail recording who signed, when, from where, and that the document was unaltered afterwards. That evidence is the actual product.
Does the signer need an account?
No. With every product here, recipients sign via an emailed link without creating an account. Any tool requiring signers to register will cost you completions.
Key Takeaways
- All of these are legally binding for ordinary commercial agreements — that is not a differentiator.
- Volume limits, not features, are what you will actually hit.
- Test the signing experience on a phone before committing.
- Read a sample audit trail; it is the evidence if a signature is disputed.
- Some document types are excluded from e-signing in most jurisdictions.
Before You Buy
Count the documents you actually sent for signature last quarter, then send yourself a test document from your two shortlisted tools and open both on your phone. That comparison decides it faster than any feature table.
For related decisions, see our guides to cloud storage for where signed documents should live, and the best DocuSign alternatives if you are specifically looking to switch.