Qausal

Qausal

UbQbit
ProofSign Qausal

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ProofSign:

About

ProofSign is an electronic-signature and document-verification platform for individuals, professionals, teams and organizations signing finished PDFs. Users upload documents, invite signers and approvers, and run single- or multi-party workflows. Participants verify email access with a one-time passcode. ProofSign records signing intent, participant actions and timestamps in an audit trail. Completed PDFs include a SHA-256 fingerprint and evidence recipients can check through a public verifier without an account. The service supports agreements and finalized documents that need an auditable signing record and a way to detect later file changes. Its free plan allows single-party signing and verification for up to 10 documents monthly under fair use. Users can earn credits through onboarding and signing milestones. The Pro plan includes a verification API.
Qausal:

About

Qausal is a web-based electronic-signature platform for preparing and verifying signed PDF documents. Users can upload a PDF, invite one or more signers, assign signing roles and sequence, and track signature progress; invitees can sign without creating an account. Qausal uses ML-DSA-65, the post-quantum digital-signature algorithm standardized as FIPS 204, to create signatures intended to remain verifiable against future quantum-computing risks. Signature data, public keys, and digests are embedded in the signed PDF, and users can download a proof bundle for independent offline verification with open-source tools. Qausal also supports adding a quantum-safe attestation to documents signed through other services without altering the original document. It is intended for organizations that need durable verification of agreements and records, including legal, financial, healthcare, and government-related workflows.
ProofSign:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
Qausal:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
ProofSign:

Audience

Small and medium-sized businesses, freelancers, consultants, professional services firms, legal teams and developers who need straightforward electronic signing, multi-party agreement workflows, audit trails and independently verifiable document evidence.
Qausal:

Audience

Law firms, conveyancers, financial services, healthcare and government suppliers: any organisation whose signed documents must stay verifiable for decades
ProofSign:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
Qausal:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
ProofSign:

API

Offers API Supported
Qausal:

API

Offers API Supported
ProofSign:

Screenshots and Videos

Qausal:

Screenshots and Videos

No images available
ProofSign:

Pricing

£0/month
The Free plan costs £0 and includes single-party signing and verification for up to 10 documents per month under fair use. Multi-party workflows and higher-volume use require credits. The Standard plan costs £6/month and includes 250 credits per month. The Pro plan costs £18/month and includes 900 credits per month plus verification API access. Annual billing is 20% off. One-time credit packs cost £10 for 100 credits, £25 for 300 credits or £75 for 1,000 credits; they do not expire and do not include subscription features. Users can earn up to 225 additional credits through identity-verification and signing milestones.
Free Version Supported
Free Trial Not Supported
Qausal:

Pricing

No information available.
Free Version Not Supported
Free Trial Supported
ProofSign:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
Qausal:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
ProofSign:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
Qausal:

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
ProofSign:

Company Information

ProofSign
Founded: 2025
United Kingdom
www.proofsign.app/
Qausal:

Company Information

UbQbit
Founded: 2025
Australia
qausal.ubqbit.com
ProofSign:

Alternatives

Holosign

Holosign

5.0 out of 5 stars
Qausal:

Alternatives

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ProofSign:
Qausal

Qausal

UbQbit
Qausal:
ProofSign:
Qausal:
ProofSign:
PQC Imza

PQC Imza

ZincirX
Qausal:
ProofSign:

Categories

Digital Signature Supported
Qausal:

Categories

Digital Signature Supported
ProofSign:

Integrations

No info available.
Qausal:

Integrations

No info available.
ProofSign:
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Qausal:
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