Side by side

BoldSign vs OpenSign

Both stand on e-signature software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

BoldSign

Free plan AndroidAPIExtension+1

BoldSign combines contract signing, templates, and audit trails with mobile and API options. Review the plan limits and billing display to find the right fit.

Visit BoldSign

Choose OpenSign if you need a free PDF signing plan, reusable templates, or self-hosting options. Look elsewhere if your free workflow depends on bulk sending, public links, or live API tokens, since those require paid plans.

Visit OpenSign

The facts

	BoldSign	OpenSign
Free plan	Yes	Yes
Open source	Not published	Yes
Runs on	Android, API, Extension, iPhone	API, Linux, Mac, Self-hosted, Web, Windows
Lowest paid plan	Growth: $5 a month	Professional: $9.99 a month
Plans published	5	4
Maker	BoldSign	Not published
Website	boldsign.com	opensignlabs.com
On e-signature software	#2 of 68	#1 of 68

BoldSign: what it does well

Free plan includes 25 envelopes each month
Templates, bulk sending, and audit trails
API and SDK workflow support
Mobile apps and browser extensions
Essential includes email, chat, and phone support

What to know first

Essential is limited to one user
Essential allows only two templates
Growth provides 50 envelopes per user monthly

OpenSign: what it does well

Free plan includes unlimited digital signatures and templates.
Templates support pre-placed widgets and reusable documents.
Supports two-factor authentication and passkey sign-in.
Offers Docker self-hosting instructions for Linux, macOS, and Windows.
Sandbox API tokens are available on every plan.

What to know first

Free users can send up to 15 invitation emails per month.
Bulk sending and public links require a paid plan.
Live API tokens require Professional or Teams.
Some SMTP features are limited to paid plans.

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