Open-source alternatives to CleanShot X
Open alternatives5

ShareX is a free, open source Windows program for taking screenshots and screen recordings, marking them up, and sharing them online. It is aimed at people who often capture their screen, such as developers, designers, support staff and power users.
Has 4 of 8 · Runs on Mac ✗ +1
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.
Flameshot is a program for taking screenshots on a computer, then marking them up with arrows, text, and shapes before saving or sharing them. It is aimed at everyday computer users, and also at people who want to customise how their screenshots work.
Has 4 of 8 · Record screen and camera ✗
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.

Ksnip is a free screenshot tool that takes pictures of your screen and lets you mark them up with arrows, shapes, text and blur. It is aimed at anyone who needs to capture, annotate and share screenshots on Linux, Windows or macOS.
Has 4 of 8 · Record screen and camera ✗ +1
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.
Greenshot is a free tool for Windows that takes screenshots of a chosen area, window or the whole screen, lets you mark them up, and save or share them. It is aimed at project managers, developers, technical writers, testers and anyone who often creates screenshots.
Has 2 of 8 · Runs on Mac ✗ +2
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.

gInk is a free drawing tool for Windows that lets you draw over whatever is on your screen, mainly to mark up presentations and demonstrations. It is designed to be simple so it does not distract the presenter or the audience.
Has 2 of 8 · Runs on Mac ✗ +3
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Nobody has changed its code in over a year. It may still work well, but help is less likely.
Does part of the job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.