There is no doubt that Adobe Suite is great, even in some case it's probably the best. But you can be mad at Adobe for many reasons, expensive monthly subscribtion method, bad stability, useless features, paying for tools you don't use. Here is my list with the best way to ditch Adobe monopoly in my opinion. I tried to add Open Source alternatives too as some are really good.
I only covered Adobe softwares that I've used so I'm sorry if you don't find what you came for...
Moho has everything you need to make amazing, professional animations. Used in the OSCAR nominated films, The Breadwinner and Song of the Sea, for Best Animated Feature Film.
More for big studios
Toon Boom Harmony Network is the industrial animation software for studios worldwide.
More for big studios
DragonBones has a skeletal animation design panel named "DragonBonesDesignPanel" and a 2D skeletal animation library based on ActionScript.
A great bones-based animator tool for profesionnal use.
Worth mentioning
Spine ,
Creature and
Animation Desk
The Wick Editor is a free and open-source tool for creating games, animations, and everything in-between. It's designed to be the most accessible tool for creating multimedia projects on the web. Your creations can run on any device with a web browser - that means mobile too.
A really good free and open source Animation and Interaction tool to create animation and things like small video games or some interactive assets for a website.
Free and open-source 2D animation software for vector and bitmap artwork, featuring tweening, bone rigging, timeline editing, and advanced layer types across all major platforms.
A feature-rich open source animation tool with an old but pretty clean UI.
Worth mentioning :
enve
Every track includes real time equalization and dynamics processing to sweeten and fine tune your mix. This is in addition to your six real time track effects, making Fairlight far more powerful than other digital audio workstation software!
Tenacity is an easy-to-use, privacy-friendly, FLOSS, cross-platform multi-track audio editor/recorder for Windows, macOS, Linux and other operating systems.
An Audacity fork without telemetry
Worth mentioning :
Audacity
Ardour is a hard disk recorder and digital audio workstation application. Record, edit, and mix on Linux, Mac OS X, and Windows.
If you need more advanced mixing,
Ardour will probably suites you more
AudioMass lets you record, or use your existing audio tracks, and modify them by trimming, cutting, pasting or applying a plethora of effects, from compression and paragraphic equalizers to reverb, delay and distortion fx.
A simple open source audio-recorder and editor in your browser
Cakewalk, formerly SONAR, is a comprehensive audio software for music composition, audio recording, editing, mixing and mastering. It features a full suite of high quality audio and MIDI effects and instruments and composition tools ranging from drum sequencer and piano roll...
The Free DAW for Windows
Full-featured music studio offering sound library, virtual drummers, and instrument presets available on Mac and iOS. Ideal for all skill levels.
The Free DAW for mac
Comprehensive DAW for digital audio tasks, featuring advanced composition, arrangement, and editing tools, tailored for music professionals.
One of the most known DAW, more suited for hip-hop and electronic
Professional DAW for songwriting, beat creation, editing, and mixing with sophisticated tools, creative plugins, full-featured mixer, and more.
The paid version of GarageBand
Software for creating musical ideas, turning them into songs, and performing them, featuring Arrangement and Session Views for fast music-making.
A DAW best suited for live session with loops etc...
Cross-platform DAW for multitrack audio and MIDI recording, editing, mixing, mastering, scriptable automation, plugin support, and customizable workflow.
The DAW for audio nerds or engieneer
Pro Tools makes music creation fast and fluid, providing a complete set of tools to create, record, edit, and mix audio. Get inspired and start making music with a massive collection of plugins, instruments, and sounds.
A great DAW for pro
Free cross-platform DAW supporting VST plugins, MIDI, and lossless audio. Offers music loopers and sequencers with privacy, no ads, and offline capability.
The FOSS solution
This one is easy
Web-based vector graphics editor with desktop apps, focusing on real-time collaboration and version control for UI/UX design.
Figma is in my opinion the more polished and feature rich UI design tool.
Penpot is the open-source design platform for teams that design, build, and scale digital products.
Vector-based Mac tool for digital UI, web, and mobile design, offering prototyping, real-time collaboration, plugins, reusable libraries, cloud sharing, and device preview.
The king before Adobe Xd enter the market, Sketch was the most used UI design tool. On mac you can also check
Principle that helps you easily create animated interactive UI !
For
Windows 10 users check
Lunacy it's free :)
Creatie brings the power of AI to UI/UX design, to help you ideate, create, and build faster than ever. Creatie can be used to design everything UI/UX, including wireframes, prototypes, mockups. We use AI to help you generate layout ideas, enhance images, check for design style...
A new kid in town, I haven't tested it yet but looks promising
I still don't understand why people are using Dreamweaver...
This repository contains a build file to generate FLOSS release binaries of Microsoft's Visual Studio Code - Open Source ("Code - OSS") project, the open source core of the proprietary 
Visual Studio Code.
VS Code without Microsoft spying on you
Free, extensible code editor with Git integration, AI-driven IntelliCode, and 30,000+ extensions, supporting various languages like Python, Java.
Microsoft Visual Studio Code or just VS Code is a really nice free and open source coding environement. With a lot of great extensions to install. If you're not against using a Microsoft tool give it a try.
Blazing fast, collaborative code editor with real-time multi-user support, built-in Vim mode, language-aware syntax trees, integrated terminal, and multi-buffers.
A new promising IDE
A well known alternative
Material Maker is a free and open-source, procedural texture authoring tool based on 
Godot Engine. Its user interface is based on Godot's GraphEditor: textures are described as interconnected texture generators and operators.
The FOSS option
An efficient PDF viewer and editor with advanced features like direct content editing, OCR by ABBYY, form filling, annotation, and offline access.
A well known alternative with one time payment
Read, edit, convert, merge, and sign PDF files across devices, for completely free and without signing up.
A free to use alternative with decent features and great interface
A free to use alternative with tons of feature
Worth mentioning :
Stirling PDF Freemium and Open Source
PDFsam Basic is a free and open-source desktop application for splitting and merging PDF files. It runs entirely on your own computer, so your files are never uploaded anywhere and it works fully offline.
A foss solution
A free, open-source viewer for Windows, supports PDFs, eBooks, Comics, with a simple, fast, and portable design prioritized for ease of use.
Another FOSS solution for viewing and not editing
And that's it my list of Adobe free creating tools. Hope you find something interesting. Please like and share ^^ Also comment the one that you use !
Comments
I want to add some alternatives:
RawTherapee - Lightroom,
Flowblade - Premiere Pro,
Wavacity and 
AudioMass - Audition.
Great list!
Addition of Clip Studio Paint as alternative for Photoshop for painting might be great. CSP itself is considered as industry standard software in webtoon or comic making, especially in Asia region. It has a lot of unique feature that Photoshop or Krita doesn't have.
Thanks 👍😊
You're welcome 😊