8 Best E-Signature Tools in 2026
DocuSign, Dropbox Sign, PandaDoc, Acrobat Sign, Documenso, OpenSign, or signing inside your assistant? The best e-signature tools of 2026.
Yantra Team4 min read
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E-signature is a solved problem, which is exactly why the choice is hard. Every tool here produces a legally binding signature with an audit trail. The differences are in per-envelope pricing, whether your documents live on someone else's servers, and how many steps stand between "the contract is done" and "the contract is signed".
We compared the leading tools of 2026. Prices are approximate as of September 2026. Confirm on official pricing pages.
Key takeaways
- Envelope limits are the hidden cost. Cheap plans cap how many documents you can send per month.
- Self-hosted options are now real. OpenSign and Documenso are open source and production-ready, which changes the privacy conversation.
- The workflow around the signature matters more than the signature. Signing order, reminders, expiry, templates and a contacts book are what save time on the tenth contract.
- Where the document comes from matters. A tool that also drafts the contract removes an upload.
Quick comparison
| Tool | Best for | Self-hosted | Signing order and reminders | Templates | Free plan |
|---|---|---|---|---|---|
| Yantra Document Sign | Signatures inside the assistant that drafted the contract | Yes, OpenSign | Yes | Yes | Included in Yantra plans |
| DocuSign | The enterprise standard | No | Yes | Yes | Limited |
| Dropbox Sign | Simple sending for small teams | No | Yes | Yes | Limited |
| PandaDoc | Proposals and quotes with signatures | No | Yes | Yes | Yes |
| Adobe Acrobat Sign | Adobe and Microsoft shops | No | Yes | Yes | Trial |
| Documenso | Open-source, developer-friendly | Yes | Yes | Yes | Yes |
| OpenSign | Open-source with a hosted option | Yes | Yes | Yes | Yes |
| SignNow | Budget per-user pricing | No | Yes | Yes | Trial |
What should an e-signature tool actually do?
- Send a document with signers, fields, order and rules in a few steps.
- Track who has acted, remind the ones who have not, and expire what is stale.
- Sign cleanly for the recipient, with an emailed code when you require it.
- Prove it: an audit trail and a completion certificate.
- Repeat it: templates and contacts.
1. Yantra Document Sign - best for signatures inside the assistant
Document Sign runs on self-hosted OpenSign inside Yantra. The New request wizard has four steps: upload the PDF, add and order signers, place fields or auto-place one signature per signer, and set the rules: send in order, strict order, require an emailed code, chase signers who have not acted, expire in N days, remind every N days. Sixteen field types cover signatures, initials, stamps, images, drawings, text, dates, checkboxes, radios, dropdowns and cells.
Documents are organised in Inbox, Sent, Drafts, Completed, Declined and Expired. Each one has signers, fields, an audit trail and settings, with Remind, Forward, Save as template, Recreate, Generate certificate, Decline and Archive. Download the signed PDF, the original, or the completion certificate. Templates and a contacts book make the next request faster.
The reason to use it is what sits beside it. Contract Builder writes an employment contract or NDA as you answer questions, and Send for signature drops it straight into Document Sign. No export, no upload.
Pros
- Full sending, tracking, signing and templates on self-hosted OpenSign
- Signing order, codes, reminders and expiry
- Contracts drafted in Contract Builder flow in directly
- Nothing simulated: if it is not connected, it says so
Cons
- Archive is the only removal, because that is what OpenSign offers
- Signed-PDF rendering needs the sandbox enabled in your workspace
Pricing: included with Yantra plans; free to start.
2. DocuSign - the enterprise standard
The name everyone recognises, with the deepest integrations and compliance coverage. Priced accordingly, with envelope limits on lower tiers.
Pros: trust, integrations, compliance. Cons: price, envelope caps. Pricing: limited free; paid tiers per user per month.
3. Dropbox Sign - best for simple sending
Formerly HelloSign. Clean, quick, and fine for a few contracts a month.
Pros: simplicity. Cons: free plan is very limited. Pricing: limited free; paid tiers.
4. PandaDoc - best for proposals and quotes
Documents are built inside PandaDoc, with pricing tables and content blocks, and signed there.
Pros: proposal workflow. Cons: heavier than a signature tool needs to be. Pricing: free e-sign plan; paid tiers.
5. Adobe Acrobat Sign - best for Adobe and Microsoft shops
Deep integration with Acrobat and Microsoft 365.
Pros: ecosystem fit. Cons: pricing and complexity. Pricing: trial, then subscription.
6. Documenso - best open-source option for developers
Open source, self-hostable, with a clean API and a hosted plan.
Pros: open, API-first. Cons: you run it, or pay for hosting. Pricing: free self-hosted; hosted plans.
7. OpenSign - best open-source with a hosted option
The engine under Yantra Document Sign, also available on its own, self-hosted or hosted.
Pros: open source, full feature set. Cons: setup if self-hosting. Pricing: free self-hosted; hosted plans.
8. SignNow - best budget option
Low per-user pricing and the core features.
Pros: price. Cons: fewer integrations. Pricing: trial, then per-user subscription.
How to choose
- The contract is drafted in Yantra anyway: Document Sign.
- You need the name your legal team already trusts: DocuSign.
- You want to own the stack: Documenso or OpenSign.
- You send proposals with pricing: PandaDoc.
Learn more in the Document Sign help article.