Code Editors

• VSCodium - Forked version of Microsoft's open source VSCode, relicensed under the MIT license and without telemetry.
• Geany - Programmer's text editor and IDE that is lightweight, customizable, and supports many plugins.
• Lua Carousel - Lightweight environment for programming on phones, tablets and computers.
• Notepad++ - Simple notepad and source code editor for Windows.

UX/UI Design

• penpot - Web-based design and prototyping platform made for cross-domain teams, a noteworthy alternative to Figma.
• Pencil Project - Cross-platform tool for making GUI prototypes.
• Alva - Tool for making "living" prototypes with working code components.
• Excalidraw - Generic, intuitive, in-browser sketching tool for quick concepting.
• Akira - Offline generic sketching tool, also great for concepting.
• Icon Shelf - Icon manager for web developers where all icons are copyable as code.

Version Control

• Meld - Offline tool for comparing and/or merging files and folders on your sytem. Extremely useful for general organization and project management, and can be useful for lots of tasks outside of software development, too.