#1 Locally hosted web application that allows you to perform various operations on PDF files

Digital Signature Service : creation, extension and validation of advanced electronic signatures

xk-time 是时间转换，时间计算，时间格式化，时间解析，日历，时间cron表达式和时间NLP等的工具，使用Java8（JSR-310），线程安全，简单易用，多达70几种常用日期格式化模板，支持Java8时间类和Date，轻量级，无第三方依赖。

历经开发周期两年，并且应用过千万级别项目的工具箱

A modern file manager that helps users organize their files and folders.

Build Cross Platform HTML Desktop Apps on .NET using native GUI, HTML5, JavaScript, CSS, Owin, AspNetCore (MVC, RazorPages, Blazor)

Semantic is a UI component framework based around useful principles from natural language.