SignServer Enterprise
One flexible platform that supports all your electronic signature use cases. Integrates with your business applications via standard interfaces. Deploy SignServer as it suits your needs - either as a turn-key software or hardware appliance or in the cloud. The SignServer platform covers all your signing use cases in one solution, including standard document signing, eIDAS advanced signing and seal, code signing for multiple formats, timestamping services and ICAO ePassport signing. Avoid managing a myriad of signing solutions and centralize all your signature processes in this multitenant solution and improve on security policy compliance. Server-side signature solutions give maximum control and security and allow you to leverage your hardware security module (HSM) investment in the best way. Signature keys are generated and used for signing in your HSM. SignServer supports most HSMs on the market - and both short-lived keys, and keys or certificates with a longer lifecycle.
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SSH Secure Sign
SalaX Secure Sign is a secure digital signature solution that enables users to electronically sign confidential documents with robust encryption, ensuring authenticity and compliance with legal standards. It allows for the signing of various file types, including PDFs, images, office documents, and source code files, with the capability to sign multiple documents simultaneously. The solution does not require end-user accounts or registration, simplifying the signing process. Users can verify, track, and audit all digital signatures, with e-signatures archived for easy auditing. Secure Sign offers flexible configuration options, including various authentication methods such as Active Directory, Signicat, or SMS OTP, and can be deployed on-premises or in the cloud, ensuring full control over data. As part of the SalaX Secure Collaboration suite, it integrates seamlessly with other applications like encrypted secure email, secure e-forms, and secure rooms for file sharing.
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apksigner
The apksigner tool, available in revision 24.0.3 and higher of the Android SDK Build Tools, lets you sign APKs and confirm that an APK's signature will be verified successfully on all versions of the Android platform supported by that APK. This page presents a short guide for using the tool and serves as a reference for the different command-line options that the tool supports. For a more complete description of how the apksigner tool is used for signing your APKs. The lowest Android framework API level that apksigner uses to confirm that the APK's signature will be verified. Higher values allow the tool to use stronger security parameters when signing the app but limit the APK's availability to devices running more recent versions of Android. By default, apksigner uses the value of the minSdkVersion attribute from the app's manifest file.
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Majik Signature
Majik Signature is a hybrid post-quantum digital signing application that lets you sign virtually any file—PDFs, Office documents, images, audio, video, source code, archives, and more—to prove authenticity, integrity, and ownership.
Everything happens locally on your device. No accounts are required for offline signing and verification, and your files are never uploaded to our servers.
Every signature combines Ed25519 with ML-DSA-87 (Post-Quantum, NIST FIPS 204). Both algorithms must verify, protecting files against today's threats while preparing for the quantum era.
Signatures are embedded into supported file formats whenever possible while preserving compatibility. Features include batch processing, recursive ZIP signing, multi-signature workflows, optional Trusted Timestamps (TSA), and offline verification using only embedded public keys.
Built for creators, developers, businesses, and organizations that require verifiable digital trust.
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