DocuSign costs $10 per month per user minimum. Adobe Sign starts at $13. HelloSign wants $15. If you run a small business and need multiple people sending documents for signature, those subscription fees multiply fast. I have been looking for a legitimate open source alternative that does not sacrifice security or features for the price tag. OpenSign is the first one I have found that actually competes with the commercial players.
When I look at the bill for the SaaS (software as a service, meaning a subscription you pay monthly instead of buying a one-time license) tools my team uses, I see roughly $4,200 per month. Some of those tools are worth it. Most are not. Document signing is the line item I have been most suspicious of, because the work it does is short and the recurring fee is not. OpenSign was the test case that finally let me cut one of those subscriptions without changing what my team could do.
What DocuSign actually does, and what I was paying for
The honest accounting starts with the workflow. Most of what my small business sends for signature is short: a contractor agreement, a vendor NDA (non-disclosure agreement, a contract that keeps confidential information from leaking to third parties), an authorization form for a client. Each document goes to one or two people, gets signed in a few days, and gets stored. The cost-per-signature math on DocuSign is brutal when you are paying per user per month and only a few of those users actually send documents in any given week.
The features I actually used in DocuSign, in order of how often I used them:
- Send a document to one or more signers and track who has signed
- Set a signing order so signer B cannot sign before signer A
- Send signing links to external parties without forcing them to make an account
- Get a completion certificate with timestamps and IP addresses for compliance
- Store signed documents somewhere I could retrieve them later
That is the list. Not the full DocuSign feature catalog. Not the API. Not the enterprise SSO (single sign-on, a way to log in once and access multiple apps) and the admin console and the bulk send. The real-world usage for a small team is the short list above, and every line item on the short list has a free open source equivalent.
What OpenSign delivers, dollar for dollar
OpenSign is a full featured document signing platform that covers the essential workflows businesses need daily. You get secure PDF e signing with hand drawn signatures, uploaded images, typed signatures, and saved signatures for repeat use. The interface includes templates for documents you send repeatedly, a centralized document drive for storage and organization, and expiring documents with rejection capabilities built in.
The multi signer workflow is where OpenSign stands out from other open source attempts. You can invite multiple signers, enforce signing order so person B cannot sign until person A finishes, and share signing links for external parties. Guest signers receive email OTP (one-time password, a short code sent to an inbox that proves the person receiving the code is the right person) verification codes before they can access documents, adding a layer of security that many paid platforms skip.
For business use, audit trails are non negotiable. OpenSign generates detailed logs tracking every document activity with timestamps, IP addresses, email addresses, and phone numbers. When a document completes, you receive a completion certificate containing all the audit data. This satisfies most compliance requirements for legal document signing.
The platform uses robust encryption for document storage and transmission. Since you can self host, you control where data resides and who has access. For businesses dealing with sensitive client information or operating in jurisdictions with strict data residency laws, this is a significant advantage over cloud only competitors.
The actual cost comparison:
- DocuSign Standard: $10 per user per month, $120 per user per year
- Adobe Sign: $13 per user per month, $156 per user per year
- HelloSign (now Dropbox Sign): $15 per user per month, $180 per user per year
- OpenSign cloud hosted: $0, free for unlimited signers and documents
- OpenSign self hosted: $0 plus whatever your server costs, typically $5 to $20 per month on a small VPS (virtual private server, a small rented virtual machine you control remotely)
For a five person team, the math is roughly $600 to $900 per year saved by switching. That is a real number, not a marketing line.
What OpenSign costs you in time and attention
OpenSign is not a drop-in replacement for DocuSign in the strict sense. The cloud hosted version is the closest to a drop-in, and it is free, but you trade the “your data sits on someone else’s computers” problem for “your data sits on a smaller vendor’s computers.” If that tradeoff bothers you, the self hosted option is where OpenSign really earns its keep, and that is also where the time cost shows up.
The migration took me about half a Saturday. I had to:
- Stand up a small VPS to host the OpenSign server (about an hour)
- Configure a domain and HTTPS so signing links looked professional (about an hour)
- Import a few existing template PDFs I had stored in DocuSign (about thirty minutes)
- Test the multi-signer workflow with a fake contract to make sure the order enforcement worked (about an hour)
- Migrate roughly forty historical signed documents by exporting them from DocuSign and re-uploading (about two hours)
Honest take on the hardest part: the historical document import. DocuSign lets you export a signed PDF with its audit trail, and OpenSign will accept the PDF, but the audit metadata does not come along for the ride. For documents that need a complete legal record, I exported the original DocuSign completion certificate and stored it alongside the PDF. That is an annoying manual step that you only do once, but it is real.
Self host also means you own the backups. The OpenSign docs cover this, but you do have to set up your own backup routine for the document store. If you skip that step, a server crash will take your signed documents with it.
The thing most reviews skip
Most “I switched from DocuSign” reviews skip the part about what happens to your existing documents and audit trails. If you have hundreds of historical signings in DocuSign, the migration is not a Saturday afternoon. It is a project. The right move is to keep your DocuSign account active for a quarter or two while you migrate the historical record, then cancel once you have verified that your new system has everything you need.
If you are a brand new business with no DocuSign history, the migration is the easy version: create an OpenSign account (cloud or self host), point your contracts at it from day one, and cancel the DocuSign trial before it auto-renews. The first month is the only time the switch is genuinely free.
If you are mid-size with a real DocuSign bill and a real audit trail you cannot lose, the right move is staged: pilot OpenSign for new contracts, migrate the historical PDF + certificate pairs over a quarter, then cut DocuSign at the next renewal. The dollar savings are large enough to justify the migration cost. The audit-trail question is the only one that has to be answered carefully.
Trade-offs
OpenSign is not free in time, especially on the self host path. The VPS costs a few dollars a month. The setup is a half day. The backup routine is yours to maintain. The historical document migration is real work that you only do once but cannot skip.
In our case, the self hosted version saved us about $720 per year for a four person team and gave us control over the document store. Your math will be different if you are a single user with a small signing volume, in which case the cloud hosted free tier is the obvious pick with no self host overhead at all.
The migration took about half a Saturday for setup and another two hours over the following week for historical imports. Easier than expected: the cloud hosted version is genuinely free and not a teaser. Harder than expected: getting the audit metadata out of DocuSign for historical documents required manual certificate re-saving.
If you are a small team paying DocuSign for the basics, this is a clear win. If you need the full DocuSign enterprise feature set (bulk send, advanced workflow automation, deep CRM integration), look at PandaDoc or keep DocuSign. If you need only the occasional personal signature with no team workflow, look at a free single-user tool and skip OpenSign entirely.