LibreSign review 2026: an open-source e-signature app for Nextcloud built by the LibreCode cooperative. See features, compliance, pricing and alternatives.
Category
Documents & E-signature
Pricing
Open Source / Freemium, from Free
Verified
Not yet
Last updated
July 18, 2026
Founded
2020
APIOpen SourceFreemiumSelf-Hosted
Overview
LibreSign is an open-source electronic signature solution, most commonly deployed as a Nextcloud app, that has been developed since 2020 by LibreCode, a Brazilian worker cooperative rather than a conventional company.
Released under the AGPL-3.0 license, LibreSign is built on open cryptographic standards including OpenSSL and X.509 digital certificates, letting organizations self-host legally relevant document signing without depending on a third-party SaaS provider.
Key Features
LibreSign supports personal and system-generated digital certificates, envelope-style batch signing of multiple documents, DocMDP protections that lock signed PDFs against further edits, and QR-code validation for instant authenticity checks.
It complies with international electronic signature frameworks including eIDAS, UETA, ESIGN, and Brazil's LGPD, and integrates natively into Nextcloud's existing files and permissions system.
Pricing
The open-source core of LibreSign is free to self-host indefinitely within Nextcloud or as a standalone deployment, licensed under AGPL-3.0.
LibreCode also offers commercial managed hosting and support services for organizations that want a turnkey deployment, with pricing arranged directly through LibreCode rather than published as fixed public tiers.
Key Features
Native Nextcloud integration — Runs as a first-class Nextcloud app, using existing files, folders, and permissions for signing workflows.
X.509 digital certificates — Uses OpenSSL and standard X.509 certificates for cryptographically verifiable signatures.
Envelope batch signing — Groups multiple documents into one signing workflow shared by the same set of signers.
DocMDP document locking — Cryptographically prevents further modification of a PDF once it has been signed.
QR-code signature validation — Lets anyone scan a signed document to instantly verify its authenticity.
International compliance support — Aligns with eIDAS, UETA, ESIGN, and LGPD electronic signature and data protection frameworks.
Automated signer reminders and tracking — Sends reminders and provides real-time visibility into where a document stands in its signing workflow.
Self-hosted and standalone options — Deployable as a Nextcloud app or as a standalone application and API.
Pros & Cons
Pros
Fully open source and AGPL-licensed, keeping the codebase auditable and free of vendor lock-in
Deep native integration with Nextcloud for organizations already using it for file storage
Built on open cryptographic standards (OpenSSL, X.509) rather than a proprietary format
Aligns with multiple international e-signature and data protection frameworks
Free to self-host with a cooperative rather than a profit-maximizing company behind it
Cons
Most seamless experience is tied to running Nextcloud, which adds infrastructure overhead for non-Nextcloud users
Smaller brand recognition and ecosystem than commercial leaders like DocuSign or Adobe Sign
Commercial support and managed hosting pricing is not publicly listed and requires contacting LibreCode directly
Self-hosting requires managing certificate infrastructure and server maintenance
Smaller cooperative team means slower feature velocity than large commercial e-signature vendors
Pricing
Self-Hosted (Open Source) Free N/A
Managed Hosting and Support Contact LibreCode custom
Frequently Asked Questions
Is LibreSign free
The open-source core is free to self-host under the AGPL-3.0 license. LibreCode also offers paid managed hosting and support services for organizations that want a turnkey solution.
Do I need Nextcloud to use LibreSign
LibreSign is most commonly used as a Nextcloud app, but standalone and API-based deployment options also exist.
Who develops LibreSign
LibreSign has been developed since 2020 by LibreCode, a Brazilian worker cooperative, rather than a traditional venture-funded company.
Is LibreSign legally compliant for electronic signatures
LibreSign is designed to align with international frameworks including eIDAS, UETA, ESIGN, and Brazil's LGPD, using X.509 digital certificates for verifiable signatures.
What license does LibreSign use
LibreSign is released under the GNU Affero General Public License v3.0 (AGPL-3.0).
How does LibreSign verify signed documents
Signed documents can be validated using QR codes that let anyone confirm authenticity against the LibreSign server, alongside cryptographic X.509 certificate validation.