oCam is the most convenient screen, game, video, webcam recording program in the world.

Capture Screen, Audio, Cursor, Mouse Clicks and Keystrokes

OBS (Open Broadcaster Software) is free and open source software for video recording and live streaming. Stream to Twitch, YouTube and many other providers or record your own videos with high quality H264 / AAC encoding.

ShareX is a free and open source program that lets you capture or record any area of your screen and share it with a single press of a key. It also allows uploading images, text or other types of files to many supported destinations you can choose from.

美图秀秀P图软件提供图片美化工具、人像美容、添加文字、抠图软件、拼图、批量处理图片大小、证件照换底色、图片压缩等好用的功能，还有海报设计、平面设计、广告设计、贴纸素材、边框等丰富的内容，可制作PPT图片、简历、GIF动图等，支持Windows、Mac、Linux及网页版。

GIMP - The GNU Image Manipulation Program: The Free and Open Source Image Editor

Honeyview official page

ImageGlass is a lightweight, open source photo viewer that designed to take place Windows Photo Viewer, work with all image formats, includes GIF, SVG, HEIC.

简单易用的图片压缩软件

🖼️ PNG/JPEG optimization app for macOS, Windows and Linux.

A free app that makes images load faster and take less disk space, without sacrificing quality. Removes private EXIF data from photos and improves compression.