An honest comparison, with receipts.
Comparison pages are usually written by whoever wins the table. This one is too — I build SigFetch — so every number below was taken from the other vendors' own pricing pages, last re-checked in September 2026, and each one links to its source. If a number goes stale, email me and I'll fix it.
The short version: SigFetch is the only tool here where unlimited sending and the API cost nothing. It is also the newest and least certified tool here. Both halves of that sentence matter, and the table hides neither.
| SigFetch | DocuSign | Documenso | OpenSign | SignWell | Dropbox Sign | |
|---|---|---|---|---|---|---|
| Free plan sending limit | Unlimited envelopes | Sign & store only; sending needs a trial¹ | 5 docs/month² | Unlimited (cloud)³ | 3 docs/month⁴ | 3 requests/month⁵ |
| Unlimited sending starts at | $0 | Not on published plans — Standard is $30/user/mo (annual commitment) capped at 100 envelopes/user/year¹ | $25/mo (billed yearly)² | $0 (cloud free tier)³ | $10/mo (billed annually)⁴ | $15/mo⁵ |
| Production API starts at | $0 — included | $50/mo (40 envelopes/mo)¹ | Included from $25/mo plan² | From $9.99/mo (annual), capped API signatures³ | Pay-as-you-go, up to 25 free API docs/mo then from $0.85/doc⁴ | $75/mo, embedded signing included⁵ |
| SOC 2 / ISO certifications | None yet — said plainly on /security | SOC 2, ISO 27001, FedRAMP + more¹ | SOC 2; ISO 27001 planned² | None advertised³ | SOC 2 Type II⁴ | SOC 2/3, ISO 27001/27018⁵ |
| HIPAA option | No | Yes, with BAA¹ | Listed as compliant² | Not advertised³ | BAA on paid plans⁴ | Annual Standard/Premium + BAA + minimum contract⁵ |
| Open source / self-host | No — hosted only | No¹ | Yes, AGPL-3.0² | Yes, AGPL-3.0³ | No⁴ | No⁵ |
| Online notarization | No | Yes (DocuSign Notary)¹ | No² | No³ | No⁴ | No⁵ |
| How it's funded | Donations | Subscriptions | Subscriptions (open core) | Subscriptions (open core) | Subscriptions | Subscriptions |
All third-party numbers as of September 2026, from the sources below. Vendors change pricing; check their pages before deciding, and tell me if I'm out of date. All trademarks belong to their owners.
When one of the others is the better pick
I'd rather you choose the right tool than choose mine for the wrong job.
Pick DocuSign
if you're an enterprise with a compliance checklist: it has the deepest certification stack (SOC 2, ISO 27001, FedRAMP), HIPAA BAAs, online notarization, and integrations with practically everything. You pay for all of that, and the Standard plan still caps you at 100 envelopes per user per year.
Pick Documenso
if open source plus certifications is your bar: it's AGPL-licensed, self-hostable, and SOC 2 compliant, with EU signature levels on its roadmap. The hosted free tier is 5 documents a month, so real usage means a paid plan.
Pick OpenSign
if you want open source and an unlimited free cloud tier: on raw free sending it's the closest thing to SigFetch on this page. API access, webhooks, and bulk send sit behind the paid plans, and it doesn't advertise SOC 2 or ISO certification.
Pick SignWell
if you want a cheap, certified paid plan: $10/month gets unlimited documents from a SOC 2 Type II vendor that will sign a HIPAA BAA, and its pay-as-you-go API pricing is genuinely developer-friendly.
Pick Dropbox Sign
if you live in the Dropbox ecosystem or need its certification set: SOC 2/3 and ISO 27001/27018, with HIPAA available on annual plans. The API is a separate, meaningful line item.
Pick SigFetch
if you want unlimited sending, multi-signer routing, a tamper-evident audit trail, and a real REST API with webhooks — for actually zero dollars — and you can live with the honest not-list on the security page: no SOC 2 yet, no HIPAA, no notarization.
Sources
- 1. DocuSign: eSignature pricing · developer/API pricing · free account · certifications · Notary
- 2. Documenso: pricing · compliance · license (GitHub)
- 3. OpenSign: plans & pricing · license (GitHub)
- 4. SignWell: pricing · API pricing · security
- 5. Dropbox Sign: pricing · free plan · API pricing · HIPAA
The table's easy to beat when the price is zero.
Try it on a real contract and judge for yourself.