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About

Firma.dev is the developer-first e-signature API built for startups and mid-sized SaaS companies. With a clean REST API and embeddable template and signing editors, developers can ship e-signature workflows in hours, not weeks. Firma.dev's pricing model is straightforward: pay-as-you-go at just €0.049 (about 5 cents USD) per envelope. No monthly minimums, no contracts, no suprise fees. That's a fraction of the cost of legacy providers like DocuSign, which makes Firma.dev a strong fit for cost-sensitive teams scaling e-signature across products or customers. Every customer gets a dedicated workspace, a secure, partitioned space for templates, documents, and envelope usage. This makes it easy to manage usage by client or environment, with no cross-tenant exposure and no complex access rules. Firma.dev is designed with compliance in mind and aligns with key frameworks including the ESIGN Act, UETA, HIPAA, GDPR, and eIDAS. Security practices align with SOC 2 and ISO 27001 standard

About

Experience the freedom of limitless digital signing without ever reaching for your wallet. Bring multiple people into the signing process at no extra cost. Close deals, not your wallet. Every signed document comes with a detailed completion certificate, featuring access logs, all at zero cost. Your documents deserve a safe home. Store and organize them for free in our secure OpenSign drive vault. OpenSign is an open source digital signature platform that enables secure signing of documents with ease and efficiency. It's designed to provide a free alternative to commercial e-signature services like DocuSign, offering transparency and customization opportunities to meet your unique business needs. OpenSign allows users to upload documents, request signatures, and sign documents electronically. It uses state-of-the-art cryptographic algorithms to ensure that all documents are signed securely and are legally binding in most countries.

Platforms Supported

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

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

Audience

Developers and engineering teams at startups and mid-sized SaaS companies who need to embed e-signature functionality into their products. Also suits technical founders and CTOs evaluating build-vs-buy for document signing workflows.

Audience

Anyone seeking a solution to sign, store, and secure their documents

Support

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

Support

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

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

€0.049 per envelope.
Pay-as-you-go at just €0.049 per envelope.
Free Version Not Supported
Free Trial Supported

Pricing

$9.99 per month
Free Version Supported
Free Trial Not Supported

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

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

Training

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

Training

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

Company Information

Firma.dev
Founded: 2025
United States
firma.dev/

Company Information

OpenSign
United States
www.opensignlabs.com

Alternatives

Alternatives

CINCEL

CINCEL

Cincel
BoldSign

BoldSign

Syncfusion
Foxit eSign

Foxit eSign

Foxit Software
SleekSign

SleekSign

Sleek
DocuChain

DocuChain

Pandaverse OÜ

Categories

Digital Signature Supported
eSignature APIs Supported

Categories

Digital Signature Supported

Digital Signature Features

Audit Trail Supported
Authentication Supported
Auto Reminders Supported
Customizable Templates Supported
Document Analytics Supported
Mobile Signature Not Supported
Multi-Party Signing Supported
Progress Tracking Not Supported
Task Progress Tracking Not Supported

Integrations

Dropbox Not Supported
Zapier Not Supported

Integrations

Dropbox Supported
Zapier Supported
Claim Firma.dev and update features and information
Claim Firma.dev and update features and information
Claim OpenSign and update features and information
Claim OpenSign and update features and information