“there is one particularly strong candidate if you are looking for something comparable to Figma.”
“Penpot is probably the closest match to what you're describing.”
“Runs on your own Linux servers.”
“Supports Docker and Kubernetes deployments.”
“Supports CSS Flexbox and Grid layout models.”
“Provides components, design systems and reusable assets.”
“Supports interactive prototyping.”
“Supports collaborative editing.”
“Includes developer inspection tools.”
“Offers an open API and plugin ecosystem.”
“Importantly, it can be deployed in private-cloud, on-premises and air-gapped environments.”
“It offers a free self-hosted Professional tier and a paid Enterprise option with additional administration, permissions and governance features.”
“Traditional vector illustration | Inkscape (locally installed)”
“Inkscape and GIMP can be installed on organization-controlled computers, but they aren't collaborative, centrally hosted design platforms in the same way as Penpot.”
“a broader graphic design suite comparable to Adobe Creative Cloud (Illustrator, Photoshop and InDesign)?”
“Raster image editing | GIMP (locally installed)”
“Inkscape and GIMP can be installed on organization-controlled computers, but they aren't collaborative, centrally hosted design platforms in the same way as Penpot.”
“Can be deployed on your own infrastructure.”
“Supports container-based deployment.”
“Can work with locally stored files and organization-controlled storage.”
“Available as an offline desktop application.”
“However, it is primarily a diagramming tool, not a full UI/UX design platform.”
“- Open-source.”
“Can be deployed on your own web server.”
“Useful for collaborative whiteboarding and rough interface sketches.”
“Supports an extensible drawing experience.”
“It is not intended to replace a complete professional interface design and prototyping suite.”