ksnip the cross-platform screenshot and annotation tool

windows macos linux screenshot drawing qt annotation x11 crop-image wayland hacktoberfest stickers imgur-uploader single-instance blur-image ksnip gnome-wayland kde-wayland cross-platform-screenshot script-uploader

• Updated Oct 21, 2026
• C++

For developing single instance application - For Windows applications on .NET Core/ .NET 5

windows wpf windows-desktop windows-forms single-instance single-instance-app

• Updated Apr 30, 2022
• C#

[DEPRECATED] Please use the plugin from https://github.com/tauri-apps/plugins-workspace instead.

single-instance tauri tauri-plugin

• Updated Feb 17, 2023
• Rust

Java library to allow only single instance of a java application to run and enable communication between first instance and subsequent instances

java socket sockets lock single-instance single-instance-app

• Updated Oct 3, 2024
• Java

WPF app Single Instance in one line of code

csharp wpf single-instance wpf-application

• Updated Aug 8, 2021
• C#

Java library that prevents user from running more than one instances of the same Java application - a.k.a. AppMutex

java library mutex single-instance

• Updated Jan 23, 2019
• Java

Single application library for Qt without network dependency

library qt cpp single-instance single-application

• Updated Jun 20, 2026
• CMake

🌠 Allow a single instance of a Python application to run at once | platform agnostic

instance single-instance single

• Updated Dec 16, 2025
• Python

Provides file-based locking mechanism with inter-process communication support

java library jvm desktop single-instance

• Updated Nov 7, 2026
• Java

Desktop-only Tauri plugin that prevents duplicate app launches and redirects activation to the existing instance.

windows macos linux rust desktop single-instance tauri tauri-plugin

• Updated Nov 1, 2026
• Rust

单例地图组件，只需要初始化一次，就能无缝切换地图，避免组件切换带来的频繁地图初始化。A single instance map component that allow you switch the component frequently with no re-initialize.

map single-instance

• Updated Feb 16, 2021
• JavaScript

A sample SpringBoot project demonstrating Rest-Concurrency on single instance server

spring-boot rest-api concurrency single-instance

• Updated Mar 29, 2017
• Java

A lightweight, zero-dependency, cross-platform process single-instance lock for Python using OS-level advisory file locks. (基于系统文件锁的 Python 轻量级跨平台进程单例锁，零依赖，防强杀/崩溃死锁。)

python cross-platform lock cron-jobs flock single-instance file-lock zero-dependencies advisory-lock process-lock

• Updated Aug 25, 2026
• Python

Tiny newline-delimited JSON-RPC over Unix domain sockets, for Go.

go golang daemon ipc pubsub json-rpc rpc xdg server-push golang-library ndjson jsonrpc uds single-instance pidfile unix-sockets background-service json-lines zero-dependencies unix-domain-sockets

• Updated Nov 12, 2026
• Go

A library which uses unix sockets to ensure a single instance

dart unix library flutter dartlang single-instance dart-library flutter-library

• Updated May 7, 2026
• Dart

InstanceGuard is a cross-platform library that allows to limit applications to one instance

application cpp guard instance single-instance

• Updated Jan 28, 2019
• C++

Tool for ensuring that a process specified in the arguments is launched only one at a time. Similar to the flock tool in Linux.

windows command tool lock process singleton windows-server batch-file windows-desktop command-line-tool instance windows-service task-scheduler batch-script windows-7 flock exclusive single-instance command-line-utility single-instance-app

• Updated Jan 5, 2026
• C++

Java library for prevent running multiple instances of an application, and offer a communication with the first instance.

java ipc single-instance single-instance-app

• Updated Aug 29, 2020
• Java

Some single instance modules

microservices modules grpc gin restful-api single-instance singleinstance

• Updated Nov 17, 2022
• Go

single instance module

module single-instance singleinstance

• Updated Nov 11, 2022
• Go