timestamping

Cross-platform PDF digital signing tool. JavaFX desktop UI with drag-to-place visible signatures, PKCS#11/PKCS#12 keystores, RFC 3161 timestamping, OCSP/CRL long-term validation, and a scriptable CLI.

SignServer – Open source, PKI-based signing software to sign code, documents, timestamps and more.

OpenTimestamps Calendar Server

Command output timestamper

A TimeStamp Responder written in C#, which supports both Authenticode and RFC3161

cryptlib security toolkit

ACL 2018: Dating Documents using Graph Convolution Networks

Multi-level Certificate Authority Management tool, front-end tool to OpenSSL, written in bash shell.

plget is a tool used to measure latency packets spent in network stack, NIC driver and on the wire, trace interpacket gap, based as on h/w as on sw timestamping, as for rx as for tx path, measure speed and more ...

The official Apostille Typescript repository

Free software transcription and description application for local and online multimedia content. Moved to Codeberg

Timestamp and colorize the stdout and stderr streams of CLI programs.

Open source desktop app and Chromium extension for capturing, organizing, and verifying web evidence in OSINT investigations. Local-first, with SHA-256 hashes, a signed manifest, and RFC 3161 timestamps.

Fix the pass bar before the test runs. PRML is an open spec and CLI that hashes and timestamps evaluation criteria (SHA-256, RFC 3161) so anyone can check them later. Python, JS, Go, Rust.

BSV file-integrity demo that stores files in MongoDB, records their hashes on-chain and checks transaction inclusion proofs.

timestamping-server-with-digicert-freetsa

Le Let's Encrypt des services de confiance eIDAS — horodatage RFC 3161 qualifié, open source et sans rente

Video Time Stamp (VTS)

Post-Quantum PKI educational demos — Trust the transition to quantum-safe cryptography

Public authorship proof for useful work, reducing ownership uncertainty so more resources go to implementation.