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Head-to-head · E-Signature Software

BoldSign vs OpenSign

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score BoldSign #9 in E-Signature Software 8.5/10 Free plan · 30-day trial Free planFree trial✓ 5 of 5 features Visit BoldSign
OpenSign #45 in E-Signature Software 5.0/10 Free plan Free plan✓ 5 of 5 features Visit OpenSign

BoldSign leads on 0 checks, OpenSign on 0, and 6 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 scoreBoldSign · 8.5/10
  • Free planboth
  • Free trialonly BoldSign

BoldSign scores higher on our rubric for e-signature software: 8.5 against 5.0 out of 10; our editors rank them #9 and #45.

BoldSign is the better fit for teams needing broad signing workflows at low entry cost. OpenSign is the better fit for self-hosters wanting a free open-source option.

  • BoldSign fits best

    Teams needing broad signing workflows at low entry cost

  • 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 BoldSign 8.5/10 Visit ↗ OpenSign 5.0/10 Visit ↗
At a glance
Editor score 8.5 5.0
Ranking #9 in E-Signature Software #45 in E-Signature Software
Best for Teams needing broad signing workflows at low entry cost Self-hosters wanting a free open-source option
Pricing model Free plan + paid Free plan + paid
Starting price $5/user/mo —
Free plan ✓ ✓
Free trial 30 days —
Deployment Cloud, Mobile Cloud, Self-hosted, Browser extension
Platforms Web, iOS, Android Web, Windows, macOS, Linux
Support Email, Live chat, Phone, Docs Email, Community, Docs
Compliance SOC 2, GDPR, HIPAA, SSO/SAML, 2FA 2FA
Integrations 10 integrations 4 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features BoldSign 5/5 · OpenSign 5/5
Audit trail ✓ ✓
Document templates ✓ ✓
Bulk sending ✓ ✓
API access ✓ ✓
SMS authentication ✓ ✓
Specs
Signature order Both Both
Our review
Pros
  • Free plan includes 25 envelopes monthly, audit trails, and mobile apps
  • Supports sequential or parallel routing, bulk sending, and multiple authentication methods
  • Offers templates, integrations, embedded signing, APIs, and AI-assisted tools
  • 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
  • SMS delivery, bulk sending, and SMS authentication may cost extra on some plans
  • Premium limits envelopes to 250 per month despite unlimited users
  • The 2021 founding year gives it a shorter operating history than mature alternatives
  • 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

BoldSign is an electronic-signature platform for individuals, small businesses, teams, and organizations that need to send, sign, track, and manage agreements. It supports email, SMS, and WhatsApp signature requests, reusable templates,…

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. BoldSignE-Signature Software 8.5Free plan · 30-day trial
  2. OpenSignE-Signature Software 5.0Free plan

Strengths and trade-offs

  • BoldSign — where it wins

    • Free plan includes 25 envelopes monthly, audit trails, and mobile apps
    • Supports sequential or parallel routing, bulk sending, and multiple authentication methods
    • Offers templates, integrations, embedded signing, APIs, and AI-assisted tools

    Where it doesn't

    • SMS delivery, bulk sending, and SMS authentication may cost extra on some plans
    • Premium limits envelopes to 250 per month despite unlimited users
    • The 2021 founding year gives it a shorter operating history than mature alternatives

  • 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.
  • BoldSign8.5/10 · Free plan · 30-day trial

    A flexible e-signature platform with a useful free plan and low-cost paid entry tier.

    Visit BoldSignFull verdict →
  • OpenSign5.0/10 · Free plan

    A capable open-source signing platform with strong automation and limited integrations.

    Visit OpenSignFull verdict →

All E-Signature software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update