Open source Mendix alternatives

Every project in the catalog is MIT, Apache or BSD licensed. 0 projects explicitly describe themselves as a Mendix alternative; 19 more are in the category where Mendix is a typical product.

Open source projects in the same category: Low-Code & App Builders

Category-level information: these projects are the same kind of software as Mendix; they have not claimed to be a one-to-one replacement.

AP

appsmithorg · Low-Code & App Builders

STARS41.1K
FORKS4.8K
COMMITS—
CONTRIBUTORS380
VERSIONv2.2
UPDATEDtoday
TypeScriptLow-CodeInternal ToolsApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You can develop custom applications such as panels and management panels.
  • You can run teams' business processes by creating BT automation and service management tools.
  • By integrating AI models with special data, you can configure automations.
Heads up
  • • High number of open issues (4,524)
User reviews
  • ↑ PositiveHacker News

    Show HN: No-code alternative to Retool, Appsmith, Internal, etc.

    “Those are all different, so it's hard to explain in one sentence. Broadly speaking, Bubble is not that great for internal tools as you have to use add-ons for UI components and integrations. Appsheet is not suited well for complex multi-page workflows and is limited in…”

  • • NeutralHacker News

    Show HN: No-code alternative to Retool, Appsmith, Internal, etc.

    “Since you mentioned about git, I wanted to point out that Appsmith supports git sync. You can follow a standard git workflow. I'm a co-founder of the project, so forgive my shameless plug.”

Verified against README · Oct 26, 2026 · source

RE

refinedev · Low-Code & App Builders

STARS36.0K
FORKS3.3K
COMMITS—
CONTRIBUTORS324
UPDATED1 mo ago
TypeScriptReactAdmin PanelMIT

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You can create custom designs with any UI library, such as TailwindCSS, Ant Design, Material UI, Mantine or Chakra UI.
  • You can develop applications on different platforms such as Next.js, Remix, React Native and Electron without the need for additional installation steps.
  • You can manage authentication, access control, routing, and data extraction processes through standard components and hooks.
User reviews
  • • NeutralHacker News

    Show HN: Refine – A Local Alternative to Grammarly

    “Well, I understand the security benefits of sandboxing. However, Apple's sandbox restrictions prevent apps from using Accessibility APIs, which are essential for Refine to read and enhance text across different applications. Many popular apps, like Grammarly and Raycast, are…”

  • ↓ NegativeHacker News

    Launch HN: Refine (YC S23) – Open-source platform for enterprise web apps

    “Here are some questions, suggestions, and thoughts roughly categorized as I went through and understood a bit more about refine (the open source) and what I can glean from enterprise. Landing Page / Initial impressions * You mention "enterprise" a lot on the landing page, along…”

Verified against README · Oct 26, 2026 · source

SI

sim

100

simstudioai · Low-Code & App Builders

STARS29.9K
FORKS3.9K
COMMITS7.2K
CONTRIBUTORS52
VERSIONv0.8.34
UPDATEDtoday
TypeScriptAI AgentsWorkflow AutomationSelf-HostedApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You design customized AI agents using visual interface or code.
  • You connect 270 excess integrations to workflows, including Slack, Notion, HubSpot, Salesforce, and databases.
  • You monitor agents' working history, logs, and scheduled tasks through the system.

Verified against README · Oct 26, 2026 · source

ON

onlook-dev · Low-Code & App Builders

STARS27.1K
FORKS2.1K
COMMITS1.6K
CONTRIBUTORS104
VERSIONv0.2.32
UPDATED9 days ago
TypeScriptNext.jsTailwindCSSGörsel EditörApache-2.0

Alternative to (project's own claim): Bolt.new, Lovable, V0, Replit Agent, Figma

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • Using text or visual, you create a new Next.js application in seconds.
  • Using the Figma-like interface, you edit your application visually to the browser DOM.
  • With the real-time code editor, you manage code and design simultaneously.
User reviews
  • • NeutralHacker News

    Show HN: Onlook – Open-source, visual-first Cursor for designers

    “Insane work. For sure the middle ground between Figma and Cursor thats been missing. Happy to be powering Fast Applies in Onlook!”

Verified against README · Oct 26, 2026 · source

AM

baidu · Low-Code & App Builders

STARS18.9K
FORKS2.7K
COMMITS14.9K
CONTRIBUTORS259
VERSION6.13.0
UPDATED7 mo ago
TypeScriptLow-CodeUIJSONApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You create a variety of background pages by writing JSON configurations.
  • You define the forms, tables, and CRUD screens with JSON without typing front-face code.
  • Using TypeScript, you present new common renderers and contributions.
Heads up
  • • High number of open issues (1,714)

Verified against README · Oct 25, 2026 · source

SE

n8n-io · Low-Code & App Builders

STARS15.3K
FORKS3.8K
COMMITS40
CONTRIBUTORS15
VERSION—
UPDATED19 days ago
Dockern8nLLMVector DatabaseApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • Using n8n and local language models, you can create AI representatives who schedule appointments.
  • You can summarize on-premises PDF documents without a data leak.
  • You can develop smart Slack bots that manage communication and operational processes.
Heads up
  • • No published release
IL

illacloud · Low-Code & App Builders

STARS12.3K
FORKS1.2K
COMMITS—
CONTRIBUTORS320
VERSIONrelease/2.9.4
UPDATED5 mo ago
TypeScriptLow-CodeAi-AssistedApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You design the user interface by dragging the components into the canvas.
  • You connect to databases and through the REST API graphical interface.
  • With real-time collaboration, you build applications together.
XG

xgo

80

goplus · Low-Code & App Builders

STARS9.5K
FORKS565
COMMITS0
CONTRIBUTORS0
VERSIONv1.7.5
UPDATEDtoday
GoProgramlama DiliHibritEntegrasyonApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You write hybrid programs by mixing Go and XGo codes in the same package.
  • You integrate C, C++, Python, JavaScript and Go libraries into a single software ecosystem.
  • You develop applications with command style syntax and simplified program structure.
User reviews
  • • NeutralHacker News

    The XGO Programming Language

    “> XGo is a programming language that reads like plain English This is possibly the most dangerous sentence on this entire page. The hubris and ignorance of history wrapped up in this one sentence is breathtaking. We've been trying to do "plain English" programming for 50-odd…”

AS

iflytek · Low-Code & App Builders

STARS8.9K
FORKS910
COMMITS0
CONTRIBUTORS0
VERSIONv1.1.2
UPDATED3 days ago
JavaAgentic WorkflowRPAAI PlatformApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You can organize AI workflows and provide model management.
  • With intelligent RPA integration, you can automate corporate processes.
  • You can integrate iFLYTEK Open Platform tools into projects.
WE

webiny · Low-Code & App Builders

STARS8.1K
FORKS683
COMMITS—
CONTRIBUTORS85
VERSIONv6.4.5
UPDATEDtoday
cmsServerlessawsheadlessMIT

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • On AWS, you install a scalable headless CMS hosted in your own infrastructure.
  • Using the TypeScript-based framework structure, you develop custom content models and React components.
  • Thanks to multiple tenant support, you provide isolated content management for different user groups and sites through a single installation.
User reviews
  • ↑ PositiveHacker News

    Launch HN: Webiny (YC W21) – Open-source serverless framework with a drop-in CMS

    “Webiny is definitely not for everyone; it does have specific technologies engraved in the offering, like nodejs, React and GraphQL. That, however, doesn't mean you can't build a REST API with it. Webiny is first of all a development framework, to help you develop apps for…”

  • • NeutralHacker News

    Launch HN: Webiny (YC W21) – Open-source serverless framework with a drop-in CMS

    “Thanks for sharing this feedback. We got similar feedback from a few smaller businesses this week. We're looking into introducing a package between the free open-source and the enterprise. Would you mind sharing what would be your price range where you would find Webiny…”

AS

iflytek · Low-Code & App Builders

STARS5.3K
FORKS482
COMMITS0
CONTRIBUTORS0
VERSIONv1.1.6
UPDATED5 days ago
PythonRPALow-CodeAutomationApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • With visual designer and drag-and-drop methods, you quickly set up workflows.
  • You provide automation between Windows desktop software, web pages, office applications, and ERP systems.
  • By installing servers with Docker, you manage task scheduling, terminal monitoring, and team collaboration modules.
DG

dgiot

New80

dgiot · Low-Code & App Builders

STARS4.9K
FORKS963
COMMITS0
CONTRIBUTORS0
VERSIONv4.9.3
UPDATED17 days ago
ErlangIndustrial IoTMQTTTDengineApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You can collect device data with systems that support Modbus, OPC UA and MQTT protocols.
  • You can store and manage time series data using TDengine and Parse databases.
  • You can monitor status transitions with gen_statem-based device shading and rule engine.
PR

prest

New80

prest · Low-Code & App Builders

STARS4.6K
FORKS324
COMMITS0
CONTRIBUTORS0
VERSIONv2.5.1
UPDATEDtoday
GoREST APIPostgreSQLMySQLMIT

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You generate instant REST API without writing backend code for your existing SQL database.
  • You define reading-oriented MCP endpoint to PostgreSQL or MySQL databases.
  • You manage multiple databases at the same time with Registry mode or environment variables.
Heads up
  • • Website is unreachable (checked: 2026-10-31)
User reviews
  • ↑ PositiveHacker News

    pREST – A fully RESTful API from any existing PostgreSQL database writting in Go

    “Today pREST not accept MySQL, more pREST developer working adapter environment, check in I recommend you open issue on pREST and recommend MySQL support”

  • ↑ PositiveHacker News

    pREST – A fully RESTful API from any existing PostgreSQL database writting in Go

    “pREST is not vulnerable to SQL injection, recommend you run tests Check access level (permissions) in”

SM

1024-lab · Low-Code & App Builders

STARS3.9K
FORKS1.0K
COMMITS0
CONTRIBUTORS0
VERSIONv3.30.0
UPDATED4 mo ago
JavaVue3Admin DashboardGüvenlik AltyapısıMIT

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You develop web applications with Java and Vue3 based architecture.
  • You manage database operations with native and mainstream database integrations.
  • You configure security and encryption settings to meet third-level equal protection requirements.

Verified against README · Oct 25, 2026 · source

FL

flyde · Low-Code & App Builders

STARS3.5K
FORKS201
COMMITS0
CONTRIBUTORS0
VERSION—
UPDATED1 yr ago
TypeScriptVisual ProgrammingLow-CodeNode.jsMIT

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • Using a visual interface in existing TypeScript projects, you can create AI workflows and demand chains.
  • Thanks to the VS Code plugin, you can visually design the backend logic and perform debugging.
  • Together with technical and non-technical team members, you can collaborate by visualizing complex backend processes.
Heads up
  • • Last update over 1 year ago
  • • No published release
User reviews
  • ↓ NegativeHacker News

    Show HN: Flyde – an open-source visual programming language

    “I have a use case that I tried to build something for. I am about ten iterations in, and the one I still use is an excel file, alas. I am al domain expert and not a programmer, and I just can't wrap my head around how to build it. My MVPs are below minimum, and what I want is…”

  • ↑ PositiveHacker News

    Show HN: Flyde – an open-source visual programming language

    “Hey, author of here! (I was wondering where the spike in visits came from ^^'... Thanks a lot for mentioning me!). Luna Park was indeed a npm package that you could integrate to allow users to build their own logic using visual scripting. In the end, I pivoted, and Luna Park is…”

SP

sponge

New54

go-dev-frame · Low-Code & App Builders

STARS2.9K
FORKS270
COMMITS0
CONTRIBUTORS0
VERSIONv1.16.1
UPDATED10 mo ago
ai-assistantai-generated-codeCloud NativeCode GenerationMIT

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • SQL, Protobuf veya JSON dosyalarından modüler Go backend kodu üretirsin.
  • CRUD, yönlendirme ve API dokümantasyonu içeren servisleri tek adımda oluşturabilirsin.
  • RESTful API, gRPC veya HTTP+gRPC servislerini aynı araç zinciriyle kurarsın.
User reviews
  • • NeutralHacker News

    Berlin Is Becoming a Sponge City [video]

    “Civil engineering has pretty well quantified the rate at which water is absorbed by certain soils, accounting for groundcover, trees, pavement, local detainment, etc. Berlin's sponge mission is baiscially distributed detainment, working to offset hardscaping (driveways and…”

  • • NeutralHacker News

    Making a Menger sponge in stained glass

    “Totally feasible! You could probably put a whole one-person workspace into about fifty square feet without getting cramped, less with some squeezing and multitasking, and I'd guess basic toolset would run you less than $500 retail. The grinder I used is a pretty simple unit with…”

Verified against README · Oct 28, 2026 · source

CO

cortezaproject · Low-Code & App Builders

STARS2.2K
FORKS530
COMMITS—
CONTRIBUTORS42
VERSION2024.9.9-rc.8
UPDATED11 days ago
Low-CodecrmEnterpriseSelf-HostedApache-2.0

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • Develop structured data applications and CRM solutions
  • You design smart workflows to automate business processes
  • You integrate different data sources with the API-based structure of the platform
SA

saltcorn · Low-Code & App Builders

STARS2.1K
FORKS360
COMMITS—
CONTRIBUTORS39
VERSIONv1.7.0-alpha.0
UPDATEDtoday
No-CodeLow-Codeapp-builderpostgresqlMIT

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • You develop web and mobile database applications using flexible views and data types
  • You run a self-hosted or multi-tenant instance on your own server or with the help of Docker
  • You manage the installation and database scheme of the application via command line tools and npm packages
Heads up
  • • High number of open issues (747)
User reviews
  • ↓ NegativeGitHub Issue

    Mobile App Error on "Location display and search" Pack

    “**Describe the bug** When utilizing the Mobile App builder on the "Location display and search" Pack, an error occurs that states "Cannot read properties of undefined (reading 'substr')". This error appears whenever any form of filtering or the Geosearch feature is attempted to…”

  • ↓ NegativeGitHub Issue

    mobile production: multiple errors, even on saltcorn.com (beta 3)

    “**Describe the bug** Tried the new `admin/build-mobile-app` but it raised some errors: First attempt: ``` Build Result Unable to build the app: , added 491 packages, and audited 492 packages in 29s 51 packages are looking for funding run `npm fund` for details 5 moderate…”

PU

measuredco · Low-Code & App Builders

STARS12
FORKS914
COMMITS—
CONTRIBUTORS83
VERSIONv0.9.0
UPDATED5 mo ago
reactpage-builderdrag-dropheadlessMIT

Common commercial products in this category: Bubble, OutSystems, Mendix

What can it do?
  • Using your own React components, you add custom drag-and-drop editing interfaces to your applications.
  • Using ready configuration templates, you quickly start projects based on Next.js or React Router.
  • By saving the page data you create to your own database, you manage content management through a visual interface.
User reviews
  • ↓ NegativeHacker News

    Show HN: Puck – Open-source visual editor for React

    “This is really slick! A really fluid and intuitive interface. We use (also MIT licensed) extensively at my startup; it attacks the same problem, and it's been incredibly effective (and hackable!). Generally speaking, owning your own CMS data, in your own database, with a…”

  • • NeutralHacker News

    Show HN: Puck – Open-source visual editor for React

    “Puck is focused on providing a solution for non technical folk to build on-brand web pages with their team’s existing React components. This enables them to build web pages with guard rails that respect their brand guidelines. Plasmic is a no-code tool for building websites and…”