Open Source
Built for the software you already use.
Tessera Patch works with real open-source projects — not contrived demos. Every candidate below is software we actively use, with real community-requested improvements that TesseraPatch can deliver as maintainable fork customizations.
The tool
TesseraPatch CLI
A local CLI that applies customizations to upstream open-source projects using plain-English descriptions. Each patch is tracked, testable, and reconcilable when upstream changes.
View on GitHub →The showroom
Tessera Code
This site turns TesseraPatch results into interactive before-and-after comparisons. Every case study is backed by a real patch applied to real software.
Browse case studies →Ecosystem
Projects we're actively targeting.
Each project below has real, community-requested improvements that fit TesseraPatch's model: visual, contained, and repeatable across upstream versions.
Gitea
#23524The community wants custom CSS themes beyond light/dark. A theme picker and full theming system would produce clear before/after proof.
Umami
#4186Dashboard layout and visual consistency need refinement. Analytics views create data-rich screenshots ideal for side-by-side comparison.
Excalidraw
#11217Presentation mode hotkeys and toolbar discoverability need improvement. Small, contained UX changes with high visual impact.
Sonarr
#8523Task logging buries important status info. A cleaner activity dashboard would improve the daily workflow for self-hosters.
Authentik
#15920Light theme is force-applied in some views. Custom branding can't override button colors due to Shadow DOM. Highly visible fix.
What's next
We're building toward a marketplace where fork maintainers can share and discover patches for popular open-source software. Every project on this page is a potential entry in that ecosystem.