Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
draw.io - Online diagramming application
Nova Code Editor - Nova Code Editor is software that is used for writing and editing codes.
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.