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github ls1intum apollon uml modeling editor github skip to content navigation menu toggle navigation sign in appearance settings platform ai code creation github copilot write better code with ai github copilot app direct agents from issue to merge mcp registry new integrate external tools developer workflows actions automate any workflow codespaces instant dev environments issues plan and track work code review manage code changes application security github advanced security find and fix vulnerabilities code security secure your code as you build secret protection stop leaks before they start explore why github documentation blog changelog marketplace view all features solutions by company size enterprises small and medium teams startups nonprofits by use case app modernization devsecops devops ci cd view all use cases by industry healthcare financial services manufacturing government view all industries view all solutions resources explore by topic ai software development devops security view all topics explore by type customer stories events webinars ebooks reports business insights github skills support services documentation customer support community forum trust center partners view all resources open source community github sponsors fund open source developers programs security lab maintainer community accelerator github stars archive program repositories topics trending collections enterprise enterprise solutions enterprise platform ai powered developer platform available add ons github advanced security enterprise grade security features copilot for business enterprise grade ai features premium support enterprise grade 24 7 support pricing search or jump to search code repositories users issues pull requests search clear search syntax tips provide feedback we read every piece of feedback and take your input very seriously include my email address so i can be contacted cancel submit feedback saved searches use saved searches to filter your results more quickly name query to see all available qualifiers see our documentation cancel create saved search sign in sign up appearance settings resetting focus you signed in with another tab or window reload to refresh your session you signed out in another tab or window reload to refresh your session you switched accounts on another tab or window reload to refresh your session dismiss alert message uh oh there was an error while loading please reload this page ls1intum apollon public notifications you must be signed in to change notification settings fork 36 star 94 code issues 19 pull requests 1 discussions actions projects security and quality 0 insights additional navigation options code issues pull requests discussions actions projects security and quality insights ls1intum apollon main branches tags go to file code open more actions menu folders and files name name last commit message last commit date latest commit history 2 994 commits 2 994 commits changeset changeset github github husky husky vscode vscode assets assets docker docker docs docs library library ops ops packages ui packages ui scripts scripts standalone standalone vscode extension vscode extension dockerignore dockerignore editorconfig editorconfig gitattributes gitattributes gitignore gitignore npmrc npmrc nvmrc nvmrc prettierignore prettierignore prettierrc prettierrc whitesource whitesource agents md agents md code_of_conduct md code_of_conduct md contributing md contributing md license license readme md readme md security md security md commitlint config mjs commitlint config mjs knip json knip json nginx conf nginx conf package json package json pnpm lock yaml pnpm lock yaml pnpm workspace yaml pnpm workspace yaml renovate json renovate json view all files repository files navigation readme code of conduct contributing mit license security more items apollon apollon is an open source uml modeling editor for the web draw 13 uml and modeling diagram types class component activity bpmn sfc and more in the browser collaborate in real time and export to svg png pdf or json this monorepo contains every piece of the apollon platform library the embeddable tumaet apollon editor npm standalone the standalone web app server and webapp built on the library vscode extension the apollon vs code extension docs the docusaurus documentation site published at https ls1intum github io apollon use the library npm install tumaet apollon react react dom xyflow react yjs y protocols react react dom xyflow react yjs and y protocols are required peer dependencies the editor renders on the host s single react and yjs instance instead of bundling its own see the library readme for the full api and per framework guides run the stack locally git clone git github com ls1intum apollon git cd apollon nvm install nvm use pnpm install pnpm dev pnpm dev starts three processes together library build watch auto rebuilds on changes server tsx watch on a printed local http port with a matching websocket relay port webapp vite hmr on a printed local dev url the launcher handles the setup resolves port collisions for the webapp server websocket relay and redis reuses an existing local redis if one is running otherwise it starts a redis container on a free host port docker is only required in that case needs no env files the defaults match the local setup override ports via apollon_webapp_port apollon_server_port apollon_ws_port or apollon_redis_port to preview the documentation site instead run pnpm dev docs from the repo root it builds the library and starts the docusaurus dev server tech stack component technology library react typescript react flow xyflow react yjs zustand vite server hono 4 redis redisjson websocket relay webapp react typescript vite shadcn style ui base ui tailwind storage redis with redisjson diagrams expire after 120 days via native ttl reverse proxy traefik v3 production requirements node js version pinned in nvmrc node 24 lts pnpm 11 the package manager the exact version is pinned in the packagemanager field of package json install it with npm install g pnpm 11 docker only when pnpm dev needs to start a local redis documentation the docs are a docusaurus site published at https ls1intum github io apollon sources live in docs preview them locally with pnpm dev docs library embedding the tumaet apollon editor user guide getting started requirements and self hosting contributor project structure scripts deployment and troubleshooting operations legal pages and tum dsms material live in ops in this repo contributing open an issue or a pull request at https github com ls1intum apollon guidelines live in contributing md see also the code_of_conduct md license mit see license about uml modeling editor ls1intum github io apollon topics react diagram react library modeling uml bpmn mobile app javascript library webapp vscode extension uml diagram capacitor uml diagrams modeling tool artemis educational technology uml class diagram modeling exercises modeling software resources readme license mit license code of conduct code of conduct contributing contributing security policy security policy uh oh there was an error while loading please reload this page activity custom properties stars 94 stars watchers 6 watching forks 36 forks report repository releases 108 v5 1 1 latest jul 9 2026 107 releases packages 0 uh oh there was an error while loading please reload this page uh oh there was an error while loading please reload this page contributors uh oh there was an error while loading please reload this page languages typescript 94 3 css 3 2 javascript 1 5 swift 0 3 mdx 0 3 dockerfile 0 2 other 0 2 footer 2026 github inc footer navigation terms privacy security status community docs contact manage cookies do not share my personal information you can t perform that action at this time