OpenSign
Nobody has reviewed OpenSign yet. Its rating shows once it has 3 reviews.
Review OpenSignAt a glance
- OpenSign has a free plan. We haven't confirmed one for airSlate SignNow.
- airSlate SignNow offers a free trial (7 days). We haven't confirmed one for OpenSign.
- airSlate SignNow's lowest paid plan is Site License at $1.50 per signature invite, as of October 23, 2026.
- airSlate SignNow lists SOC 2, ISO 27001, GDPR, HIPAA and SSO. We haven't confirmed any of these for OpenSign.
- Both have a public API.
- OpenSign can be self-hosted. We haven't confirmed that for airSlate SignNow.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
The facts checked for both tools don't separate OpenSign and airSlate SignNow yet. The table below shows what each one lists.
airSlate SignNow
Nobody has reviewed airSlate SignNow yet. Its rating shows once it has 3 reviews.
Review airSlate SignNowThe facts
- What it does
- OpenSignYour ultimate open source PDF E-Signature Solution.
- airSlate SignNowSign documents online, generate agreements, negotiate contracts, and accept payments with eSignatures
- Free plan
- OpenSignYes
- airSlate SignNowNot confirmed
- Pricing
- OpenSignFree plan with unlimited self-signing
- airSlate SignNowNot confirmed
- Paid plans from
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between OpenSign and airSlate SignNow yet.
Used either of them?
Your review makes this comparison better for the next person. Review OpenSign or review airSlate SignNow.