GIMP is a free program for such photo retouching, image composition and image authoring. Essentially it's the closest thing to Photoshop you can get for free.
Krita is a professional Free and open source (FOSS) painting program. It is made by artists that want to see affordable art tools for everyone within concept art, texture and matte painters, illustrations and comics.
Adobe Photoshop is a raster graphics editor developed and published by Adobe Inc. for Windows and macOS. It was originally created in 1988 by Thomas and John Knoll.
Adobe Photoshop Features
Microsoft OneNote, part of the Microsoft 365 (Office), is a digital notebook application that gives people one place to gather notes and information. It also offers shared notebooks, syncing between multiple computers and devices via Windows...
Microsoft OneNote Features
Xournal++ (a fork of Xournal) is a handwriting Notetaking software with PDF annotation support. Written in C++ with platform independent GTK, supporting Linux, e.g. Ubuntu, Debian, Arch, Suse, macOS and Windows 10. Supports Pen input like Wacom Tablets.
Design quickly and confidently with Adobe Illustrator software. Sophisticated tools for drawing and typography, along with advanced color controls and creative effects, provide a comprehensive vector graphics environment.
Adobe Illustrator Features
Procreate is a multi-award winning, creative illustration app built from the ground up for iPad with a pocket-sized variant for iPhone. The app features a complete, professional toolset that's accessible while still providing the power and flexibility of desktop counterparts.
Notesnook is a simple and cross-platform private notes app that keeps your notes organized and synced on your phone, tablet and computer. Take notes, capture ideas, create to-do lists, keep a journal, write your assignments and manage projects, we have got you covered.
Sketchbook drawing software features an artist-friendly, gesture-based user interface that is so fast and intuitive even new users can be productive within minutes.
With vector illustration, page layout, photo-editing and tracing software, CorelDRAW Graphics Suite X7 is ideal for professional and occasional designers tackling any type of graphics project. Precision design tools, market-leading file compatibility and high-quality graphics...
CorelDRAW Graphics Suite Features
OpenBoard is a cross-platform (Linux / Windows / macOS) interactive whiteboard application. It is currently maintained by the Education Department (DIP) of the Canton of Geneva in Switzerland.
Clip Studio Paint, previously Manga Studio or ComicStudio in Japan, is a family of software applications for Mac OS X and Microsoft Windows used for the digital creation of comics and manga.
Clip Studio Paint Features
MediBang Paint is a lightweight software for illustration and making comic books on Windows and Mac OS.
MediBang Paint Features
PaintTool SAI is high quality and lightweight painting software, fully digitizer support, amazing anti-aliased paintings, provide easy and stable operation, this software make digital art more enjoyable and comfortable.
PaintTool SAI Features
GoodNotes for iPhone and iPad is a notetaking app with the theme of "digital paper." It's usable for all your handwritten notes and formerly paper-based information. Take handwritten notes in digital, multi-media notebooks or annotate PDF, PowerPoint, and Word...