Free open source alternative app list of Kaleidoscope :

GitHub Desktop

Focus on what matters instead of fighting with Git. Whether you're new to Git or a seasoned user, GitHub Desktop simplifies your development workflow.

FreeWindowsmacOS

Sourcetree

A Git GUI that offers a visual representation of your repositories. Sourcetree is a free Git client for Windows and Mac.

WindowsmacOS

TortoiseGit

TortoiseGit provides overlay icons showing the file status, a powerful context menu for Git and much more!

FreeWindows

DiffMerge

DiffMerge is an application to visually compare and merge files on Windows, OS X and Linux.

FreeWindowsmacOSLinux

WinMerge

WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.

FreeWindows

Meld

Meld helps you compare files, directories, and version controlled projects. It provides two- and three-way comparison of both files and directories, and has support for many popular version control systems. Meld helps you review code changes and understand patches. It might even help you to figure out what's going on in that merge you keep avoiding.

WindowsmacOSLinux

Text Compare

Real-Time Diff & Merge Tool Online. 100% free online text diff tool: real-time document comparison & merging, and many text processing tools.

FreeWindowsmacOSLinux

Others are looking for free open source alternatives of following apps:

AI & Machine Learning

Free open-source AI & machine learning tools.

Adobe Premiere Pro

Adobe Premiere Pro is a professional video editing software for film, TV, and web.

AdGuard DNS

AdGuard DNS is a DNS-based service that blocks ads, trackers, and malicious websites.

AdGuard

AdGuard is a cross-platform ad blocker that filters web content and protects privacy.

Ad Blocker

Ad Blocker is a browser tool that removes intrusive ads and pop-ups from web pages.

Acorn 7

Acorn 7 is a Mac image editor for editing photos and creating graphics.