There is no universal winner among BoldSign, Oneflow, and SignRequest because each is really built for a different job: BoldSign is the strongest pick when…
Best for: Software teams and regulated businesses in healthcare or finance that want to embed e-signing directly into their own product via API while also getting HIPAA and SOC 2 compliance.
Freemium · From Free (basic PDF signing); paid plans from EUR17/user/month
Best for: Sales, legal, and procurement teams, especially in Europe, who want to negotiate and co-edit contracts as live documents rather than sign static PDFs, and who value CRM-integrated contract data.
Freemium subscription (per user/month) · From $9/month per user (Professional plan)
Best for: Freelancers and small teams that want dead-simple, low-cost e-signing today, while being aware that Box is steering long-term development toward Box Sign.
At a Glance
BoldSign
Oneflow
SignRequest
Primary category
Documents & E-signature
Documents & E-signature
Documents & E-signature
Rating
Not documented
Not documented
Not documented
Pricing model
Freemium
Freemium
Freemium subscription (per user/month)
Starting price
Free
Free (basic PDF signing); paid plans from EUR17/user/month
$9/month per user (Professional plan)
Free plan
Yes
Yes
Yes
Free trial
Yes
Yes
Yes
Platforms
Web
Web
Web
Team collaboration
Not documented
Not documented
Not documented
AI features
Yes
Yes
Not documented
Public API
Yes
Yes
Yes
Standout Differences
BoldSign is the only API-first, developer-embeddable option
BoldSign ships a REST API and SDKs built specifically for embedding signing into other applications, plus a dedicated Enterprise API priced per envelope, something neither Oneflow nor SignRequest documents as a standalone developer offering.
BoldSign
Oneflow treats contracts as live, editable data instead of static PDFs
Oneflow's core differentiator is letting both parties negotiate and edit contract content inside a shared digital document before signing, with every field trackable as structured data, unlike BoldSign and SignRequest which center on signing a fixed document.
Oneflow
SignRequest's long-term product direction is tied to Box Sign
Since Box acquired SignRequest in 2021, Box has stated it is no longer building new API integrations under the SignRequest name and points developers to the Box Sign API instead, making SignRequest's roadmap less certain than the other two.
SignRequest
All three offer a genuinely free entry tier
BoldSign's free Essential plan covers 25 envelopes a month, Oneflow's free plan covers basic PDF signing, and SignRequest offers a limited free tier for occasional signers, so cost is not the deciding factor for light usage.
BoldSign, Oneflow, SignRequest
BoldSign has the deepest documented compliance coverage
BoldSign explicitly lists ESIGN, eIDAS, SOC 2, GDPR, HIPAA, and PCI DSS compliance on its higher tiers, a broader documented compliance set than what is stated for Oneflow or SignRequest.
BoldSign
Feature-by-Feature
Core Signing and Templates
Feature
BoldSign
Oneflow
SignRequest
Free plan available
Available
Available
Available
Reusable templates
Available
Available
Available
Bulk sending
Available
Not documented
Available
Compliance and Security
Feature
BoldSign
Oneflow
SignRequest
HIPAA compliance
Available
Not documented
Not documented
Single sign-on (SSO)
Available
Not documented
Not documented
Developer and CRM Integration
Feature
BoldSign
Oneflow
SignRequest
Embeddable API and SDKs
Available
Not documented
Limited
CRM integration (Salesforce, HubSpot, etc.)
Available
Available
Available
Contract Lifecycle
Feature
BoldSign
Oneflow
SignRequest
Live collaborative contract editing before signing
Unavailable
Available
Unavailable
Pricing Compared
Starting price reflects the lowest paid tier, not the full cost for every team size or usage level.
BoldSign
Essential — Free monthly
Growth — $5/user/month (annual) annual or monthly
Business — $15/user/month (annual) annual or monthly
Premium — $99/month (annual) annual or monthly
Enterprise API — $0.75/envelope, $30/month minimum usage-based
Oneflow
Free — Free N/A
Essentials — ~EUR17/user/month Monthly or annual
Business — ~EUR45/user/month Monthly or annual
Enterprise — Custom Annual
SignRequest
Free — $0 Monthly
Professional — $9/month per user Monthly (annual discount available)
Business — $15/month per user Monthly (annual discount available)
Pros & Cons
BoldSign
Pros
Free tier covers up to 25 envelopes per month for individuals and micro-businesses
Developer-first API pricing is competitive against per-seat-only competitors
Strong compliance coverage including HIPAA and SOC 2
Backed by Syncfusion, an established developer tools vendor
Cons
Unlimited envelopes require the $15+/user/month Business tier
API pricing can add up per envelope at high volume
Advanced compliance features like HIPAA are gated behind higher tiers
Brand recognition is lower than incumbents like DocuSign
Oneflow
Pros
Live, collaborative editing feels more natural than redlining static PDF documents
Free tier makes basic e-signing accessible without a paid commitment
Publicly traded company provides financial transparency uncommon among CLM competitors
Strong native integrations with popular CRM platforms like Salesforce and HubSpot
Contract data is structured and reportable rather than locked in unstructured documents
Cons
Advanced contract lifecycle management features require the higher-priced Business or Enterprise tiers
Smaller global brand recognition compared to DocuSign or Adobe Sign
Some users report a learning curve when moving from simple e-signature tools
Deeper customization and integrations may require Enterprise-tier custom pricing
Primarily strongest in European markets, with less mature localization elsewhere
SignRequest
Pros
Simple, easy-to-use interface with a low learning curve for senders and signers
Affordable per-user pricing compared to larger enterprise e-signature suites
Backed by Box, Inc., a well-established, publicly traded company
Free plan available for individuals with light signing needs
Legally compliant with ESIGN Act and eIDAS requirements
Cons
Box has deprioritized new API integrations for SignRequest in favor of the Box Sign API
Fewer advanced workflow and contract-lifecycle features than larger platforms like DocuSign
Long-term product direction is uncertain as functionality consolidates into Box Sign
Limited standalone reporting and analytics compared to enterprise-grade competitors
Per-user pricing can add up for larger teams compared to flat-rate competitors
Use Cases
Choose BoldSign: Software teams and regulated businesses in healthcare or finance that want to embed e-signing directly into their own product via API while also getting HIPAA and SOC 2 compliance.
Choose Oneflow: Sales, legal, and procurement teams, especially in Europe, who want to negotiate and co-edit contracts as live documents rather than sign static PDFs, and who value CRM-integrated contract data.
Choose SignRequest: Freelancers and small teams that want dead-simple, low-cost e-signing today, while being aware that Box is steering long-term development toward Box Sign.
BoldSign
Standalone contract signing — Businesses send and track signature requests for contracts, offer letters, and agreements from the BoldSign web app.
Embedded signing in SaaS products — Software companies use the BoldSign API to add native e-signature capability inside their own platform.
Regulated document workflows — Healthcare and finance teams use HIPAA- and SOC 2-compliant signing for sensitive documents.
Oneflow
Sales contract acceleration — Sales teams use Oneflow to draft, negotiate, and close deals faster with live editing and instant e-signatures synced to their CRM.
HR onboarding and employment contracts — HR departments send templated employment agreements and offer letters for e-signature with automated tracking of completion status.
Procurement and vendor agreement management — Procurement teams manage vendor contract lifecycles, renewal reminders, and approval workflows in one auditable system.
SignRequest
Small business contract signing — Small businesses and freelancers use SignRequest to send and collect signatures on contracts, proposals, and invoices without paper.
HR onboarding documents — HR teams use bulk send and templates to distribute offer letters and onboarding paperwork to new hires for e-signature.
Box customers adding e-signature workflows — Existing Box customers use SignRequest and Box Sign to add e-signature directly into their document management and content workflows.
Frequently Asked Questions
Which of these three is cheapest for light, occasional use?
BoldSign's free Essential plan allows up to 25 envelopes a month, which is more generous than Oneflow's free tier (basic PDF signing only) or SignRequest's limited free tier.
Is SignRequest still being actively developed?
SignRequest remains available as a standalone product, but since Box's 2021 acquisition, Box has redirected new API integration work toward Box Sign, so buyers should treat Box Sign as the actively developed successor.
Which tool is best for embedding e-signing into my own SaaS product?
BoldSign, since it was purpose-built as an embeddable API and SDK with dedicated per-envelope Enterprise API pricing.
Which tool is best if my team wants to negotiate and edit a contract together before signing rather than just sign a fixed PDF?
Oneflow, whose core product treats the contract as a live, editable document that both parties can comment on and revise.
Do any of these support HIPAA compliance for healthcare use?
Only BoldSign explicitly documents HIPAA compliance, available on its Business and Premium tiers; HIPAA is not documented for Oneflow or SignRequest.
Which has the strongest track record for European contract compliance?
Oneflow, a Swedish, publicly traded company that supports advanced and qualified e-signature levels for EU eIDAS compliance and has a strong Nordic and broader European presence.