Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · E-Signature Software

Adobe Acrobat Sign vs OpenSign

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Adobe Acrobat Sign #4 in E-Signature Software 9.0/10 Paid ✓ 5 of 5 features Visit Adobe Sign
OpenSign #45 in E-Signature Software 5.0/10 Free plan Free plan✓ 5 of 5 features Visit OpenSign

Adobe Acrobat Sign leads on 0 checks, OpenSign on 1, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAdobe Acrobat Sign · 9.0/10
  • Free planonly OpenSign

Adobe Acrobat Sign scores higher on our rubric for e-signature software: 9.0 against 5.0 out of 10; our editors rank them #4 and #45.

OpenSign offers free plan; Adobe Acrobat Sign doesn't.

Adobe Acrobat Sign is the better fit for large organizations using Adobe and enterprise apps. OpenSign is the better fit for self-hosters wanting a free open-source option.

  • Adobe Acrobat Sign fits best

    Large organizations using Adobe and enterprise apps

  • OpenSign fits best

    Self-hosters wanting a free open-source option

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Adobe Acrobat Sign 9.0/10 Visit ↗ OpenSign 5.0/10 Visit ↗
At a glance
Editor score 9.0 5.0
Ranking #4 in E-Signature Software #45 in E-Signature Software
Best for Large organizations using Adobe and enterprise apps Self-hosters wanting a free open-source option
Pricing model Paid Free plan + paid
Starting price — —
Free plan — ✓ (best)
Free trial — —
Deployment Cloud, Desktop, Mobile Cloud, Self-hosted, Browser extension
Platforms Web Web, Windows, macOS, Linux
Support Tickets, Live chat, Phone, Docs · 24/7 Email, Community, Docs
Compliance SOC 2, ISO 27001, PCI DSS 2FA
Integrations 75+ integrations 4 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Adobe Acrobat Sign 5/5 · OpenSign 5/5
Audit trail ✓ ✓
Document templates ✓ ✓
Bulk sending ✓ ✓
API access ✓ ✓
SMS authentication ✓ ✓
Specs
Signature order Both Both
Our review
Pros
  • Supports bulk sending, reusable templates, tracking, and audit reports
  • Offers sequential, parallel, and hybrid agreement routing
  • Integrates with Microsoft 365, Salesforce, Workday, and more
  • Free plan includes unlimited e-signatures and completion certificates.
  • Supports templates, routing, bulk sending, embedded signing, and public links.
  • REST API and self-hosting support automation and deployment control.
Cons
  • Uses contact-sales pricing rather than published plan prices
  • Has no free plan
  • Its extensive enterprise feature set may exceed smaller teams' needs
  • Signer verification is email OTP rather than SMS authentication.
  • Listed integrations are limited to Dropbox and Zapier.
  • Professional includes 100 monthly credits for paid workflows.
Our verdict

Adobe Acrobat Sign is a cloud-based electronic-signature service for businesses and enterprises. It supports sending agreements by email or SMS, collecting signatures, managing reusable templates, tracking agreement status, producing audit…

Read the review →

OpenSign is an open-source electronic-signature platform for individuals, teams, developers, and organizations that need to send, sign, store, and manage PDF documents. It supports drawn, typed, uploaded, and saved signatures, reusable…

Read the review →
  1. Adobe Acrobat SignE-Signature Software 9.0Paid
  2. OpenSignE-Signature Software 5.0Free plan

Strengths and trade-offs

  • Adobe Acrobat Sign — where it wins

    • Supports bulk sending, reusable templates, tracking, and audit reports
    • Offers sequential, parallel, and hybrid agreement routing
    • Integrates with Microsoft 365, Salesforce, Workday, and more

    Where it doesn't

    • Uses contact-sales pricing rather than published plan prices
    • Has no free plan
    • Its extensive enterprise feature set may exceed smaller teams' needs

  • OpenSign — where it wins

    • Free plan includes unlimited e-signatures and completion certificates.
    • Supports templates, routing, bulk sending, embedded signing, and public links.
    • REST API and self-hosting support automation and deployment control.

    Where it doesn't

    • Signer verification is email OTP rather than SMS authentication.
    • Listed integrations are limited to Dropbox and Zapier.
    • Professional includes 100 monthly credits for paid workflows.

More comparisons

All E-Signature software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update