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Work with remote images registries - retrieving information, images, signing content

Tool for manipulating and re-signing Android A/B OTAs

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.

Golang (GO) implementation of Javascript Object Signing and Encryption specification

curl-like access to AWS resources with AWS Signature Version 4 request signing.

NodeJS module and commandline utility for re-signing iOS applications (IPA files).

Simple signing of PDFs in node.

Various utilities to managing Android and iOS app builds, code signing, and deployment.

A JUCE audio plugin template. JUCE 8, Catch2, Pluginval, macOS notarization, Azure Trusted Signing, Github Actions

Free open-source web software for signing PDF (alone or with others) and also organize pages, edit metadata and compress pdf

A modern, cross-platform OpenPGP tool with a unique dual-engine core: switch freely between the battle-tested GnuPG and a modern, memory-safe Rust rPGP backend. It makes encryption, signing, and key management easier and more trustworthy in everyday privacy workflows.

Signing HTTP requests without heavy SDKs.

Code-signing for npm packages

Nix binary cache proxy service -- with local caching and signing.

Implementation of a Solana relayer. Provides a lib and cli crate in order to enable signing experiences on Solana

伪造学习通的签到活动🙋学习通签到神器。支持滑动验证码签到、签退、人脸识别功能，支持自定义位置签到、动态二维码签到、自选照片进行拍照签到等全部签到形式以及给其他用户无限代签的功能 Falsifying the signing activity of Chaoxing, supporting slide captcha and signing out, and location-signing by custom position, selecting a picture from gallery for photo-signing and all types. Also supported signing for infinite accounts in only one device

A lightweight, fully-featured TypeScript SDK for the Shopee Open API v2. Features automatic request signing, pluggable token storage, robust error handling, and 100% endpoint coverage.

Fast, scriptable CLI for the App Store Connect API. Automate TestFlight, builds, submissions, signing, analytics, screenshots, subscriptions, and more

Native desktop platform for the JVM. Compose Multiplatform apps with real OS integration — native window decorations, notifications, taskbar and dock, code signing, installers, auto-update — packaged for macOS, Windows and Linux from a single Gradle DSL. Runs on the JVM or as a GraalVM native image.

Shortcuts Playground: A Claude Code and Codex plugin for building, validating, signing, and remixing macOS/iOS Shortcuts with natural language.

Adobe Acrobat Pro Professional 2026 – Industry-standard PDF editor for creating, editing, converting, and signing documents with advanced features.

Post-quantum Web4 client SDK for the Quantova Layer-1 blockchain. JavaScript/TypeScript, shipped as CommonJS + ESM with type definitions. Falcon/Dilithium/SPHINCS+ signing, the q_* JSON-RPC namespace, QVM contracts (Solidity ABI), QNS .q names, fee/gas oracle, batch requests, real-time event hooks, REST client, and a QWeb4-cli.

Post-quantum Web3 client SDK for the Quantova Layer-1 blockchain — Python, synchronous in the style of web3.py and pip-installable. Falcon/Dilithium/SPHINCS+ signing, the q_* JSON-RPC namespace, QVM contracts (Solidity ABI), QNS .q names, fee/gas oracle, batch requests, real-time event hooks, REST client, and a qweb3-cli. Python 3.8+.

Turn a $5 Raspberry Pi RP2350 board into an open-source hardware passkey: WebAuthn/FIDO2 logins, ssh & git signing, OpenPGP, PIV, TOTP. Rust firmware, no_std.