Browse free open source UML tools and projects below. Use the toggles on the left to filter open source UML tools by OS, license, language, programming language, and project status.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

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  • Context for your AI agents Icon
    Context for your AI agents

    Crawl websites, sync to vector databases, and power RAG applications. Pre-built integrations for LLM pipelines and AI assistants.

    Build data pipelines that feed your AI models and agents without managing infrastructure. Crawl any website, transform content, and push directly to your preferred vector store. Use 10,000+ tools for RAG applications, AI assistants, and real-time knowledge bases. Monitor site changes, trigger workflows on new data, and keep your AIs fed with fresh, structured information. Cloud-native, API-first, and free to start until you need to scale.
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  • 1
    brModelo 3.2

    brModelo 3.2

    ER Databese Model

    Tool used to Database ER model Ferramenta para modelagem ER em bancos de dados.
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    Downloads: 240 This Week
    Last Update:
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  • 2
    OrientDB

    OrientDB

    DBMS supporting graph, document, full-text and geospatial models

    OrientDB is an Open Source Multi-Model NoSQL DBMS with the support of Native Graphs, Documents, Full-Text search, Reactivity, Geo-Spatial and Object Oriented concepts. It's written in Java and it's amazingly fast. No expensive run-time JOINs, connections are managed as persistent pointers between records. You can traverse thousands of records in no time. Supports schema-less, schema-full and schema-mixed modes. Has a strong security profiling system based on user, roles and predicate security and supports SQL amongst the query languages. Thanks to the SQL layer it's straightforward to use for people skilled in the Relational world. OrientDB adheres to the NoSQL movement even though it supports ACID Transactions and SQL as query language. In this way it's easy to start using it without having to learn too much new stuff.
    Downloads: 2 This Week
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  • 3
    Java 2D & 3D visual entity relationship design & modeling (ERD,SQL) for Oracle,MSSQL,Postgres,MySQL,...,Database change&dictionary management, Swing Data Binding, Apache FOP Renderer for dot matrix printers,Sparx Enterprise Architect Reports + more
    Downloads: 2 This Week
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  • 4
    Apricot DB

    Apricot DB

    Database ERD- design tool with Reverse Engineering

    Design/Reverse Engineer/Generate Scripts/Compare Versions of all major databases with "Apricot DB" ERD- tool "Apricot DB" is a database tool for design and analysis of the relational database structure. It represents the DB- structure in the form of editable Entity/Relationship Diagrams (ERD). "Apricot DB" allows to perform reverse engineering on the existing database, as well as to create a new database structure from scratch. Allows to generate the essential DDL- scripts for CREATE/DROP/DELETE- operations based on the current ERD. "Apricot DB" supports two popular ERD notations: the "Crow's Foot" and "IDEF1x". The databases supported by Apricot DB: Oracle; SQL Server; MySQL; MariaDB; PostgreSQL; DB2/DB2 LUW; H2; SQLite Your feedback is appreciated.
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    Downloads: 3 This Week
    Last Update:
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  • Repair-CRM Icon
    Repair-CRM

    For small companies that repair and maintenance customer machines

    All-In-One Solution with an Online Booking portal for automating scheduling & dispatching to ditch paperwork and improve the productivity of your technicians!
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  • 5

    DBGraph

    A tool for automatically generating UML database diagrams.

    The diagrams are represented in the DOT language and can be interpreted by the visualization software Graphviz (http://www.graphviz.org/). Features: - Use HTML tables as templates for customizing the diagram design - Already comes with predefined connections for some common database systems, new systems can easily be added.
    Downloads: 1 This Week
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  • 6
    M2SQL

    M2SQL

    Replicate your Mumps Globals into Relational Data Base

    M2SQL is a handy tool that permits to map your existing Mumps Globals in a relational Vision. The mapping process is simple and intuitive and is done only once. The Mapping process will describe the Mumps Globals data as a complex of Applications, Hierarchies, Relations and fields. Once mapping is completed you will able to replicate all the Mumps data into Target Relation database such as SQLITE or MYSQL. Normally you will do the replication process once a day while system is silent. This will give you a Relational Replication for Reporting or Business Analysis using industry standard tools. If you have a huge amount of data on your Mumps Globals you can choose an alternative mechanism in which only changes will be replicated to the target relational database and reflected almost immediately . The tool is a set of Mumps Routines and globals written on top of Intersystem IRIS , but using only pure Ansi standard Mumps .
    Downloads: 1 This Week
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  • 7
    Lightweight include files adding reflection capabilities to C++. Generates SQL queries and serialization routines. STL-style iterations over class members. Compile-time / run-time reflection. Based on templates and meta-programming.
    Downloads: 0 This Week
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  • 8
    a framework library with a template method interface and inheritable classes for an executable process design which produces an executable which is both a GUI and a console application. It provides multi-threading for work items of the provider process .
    Downloads: 0 This Week
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  • 9
    The project aims to create a web based database administration tool, with expansion into automatic code generation from the database schema. The code allows creation and removal of databases, tables and fields via a web browser.
    Downloads: 0 This Week
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  • Smart Business Texting that Generates Pipeline Icon
    Smart Business Texting that Generates Pipeline

    Create and convert pipeline at scale through industry leading SMS campaigns, automation, and conversation management.

    TextUs is the leading text messaging service provider for businesses that want to engage in real-time conversations with customers, leads, employees and candidates. Text messaging is one of the most engaging ways to communicate with customers, candidates, employees and leads. 1:1, two-way messaging encourages response and engagement. Text messages help teams get 10x the response rate over phone and email. Business text messaging has become a more viable form of communication than traditional mediums. The TextUs user experience is intentionally designed to resemble the familiar SMS inbox, allowing users to easily manage contacts, conversations, and campaigns. Work right from your desktop with the TextUs web app or use the Chrome extension alongside your ATS or CRM. Leverage the mobile app for on-the-go sending and responding.
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  • 10
    A WYSIWYG database modeling tool based on eclipse,it can generate code for hibernate,ojb,ibatis,openJpa.The supported platform includes oracel,db2,mysql,mssql,sybase,derby,MaxDB,SapDB,PostgreSql,HsqlDB and the databases which has JDBC driver.
    Downloads: 0 This Week
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  • 11
    Casper Datasets is a robust in-memory data manipulation framework, which allows programmatic search / sort / indexing on relational data rows. Casper Datasets virtually eliminates the need for relational databases for basic data manipulation and provides
    Downloads: 0 This Week
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  • 12
    CodaServer is a database that makes building business applications easy. It uses a SQL-like language that lets you describe your workflow and business processes, and uses this information to enforce your business rules and guarantee data integrity.
    Downloads: 0 This Week
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  • 13
    ConceptBase.cc

    ConceptBase.cc

    A Database System for Metamodeling and Method Engineering

    ConceptBase.cc is a multi-user deductive and object-oriented database system for metamodeling and method engineering. Includes a graphical client that builds upon the logic-based features of the ConceptBase.cc server. The data model is O-Telos. ConceptBase.cc can represent information at the data level (example data, traces of process executions etc.), the class level (schemas, process definitions etc.), the metaclass level (constructs of modeling languages), the meta-metaclass level (constructs for defining modeling languages), and so forth. ConceptBase.cc is developed by the ConceptBase Team at University of Skövde (HIS). ConceptBase.cc supports Linux, Mac OS X and Windows. ConceptBase.cc is free software distributed under a FreeBSD-style license.
    Downloads: 0 This Week
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  • 14
    Cooperator is on the one hand, a base class library for Object Relational Mapping, ORM, and by another one, a tool of code generation for for the MS.Net 2.0/3.0, using Business Objects and Stored Procedures. DAL, ORM, UOW, FACADE, MAPPER, MODELING ...
    Downloads: 0 This Week
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  • 15
    Fourth generation database designer and code-generator for educational purposes and speeding-up database designing and creating work.
    Downloads: 0 This Week
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  • 16
    DMF: Distributed Multiplatform Framework

    DMF: Distributed Multiplatform Framework

    Development framework including code generator and UML ex/import

    A component based programming framework. This project is aimed to support various target frameworks. A wxWidgets based GUI application is the major sample which also provides rapid database GUI design with UML import and export (db reverse engineering).
    Downloads: 0 This Week
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  • 17
    pgDesigner is a Datamodel designer for PostgreSQL written in Gambas language.
    Downloads: 0 This Week
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  • 18
    A graphical design tool for building a database schema. Connects to several live databases (including Postgres, MySQL, Sybase and MS SQL Server) and uploads and downloads schemas. Generates and parses SQL and generates Java source code from the schema.
    Downloads: 0 This Week
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  • 19
    Dbf2Ecore creates an EMF Ecore metamodel from .dbf files of a DBase database. The data can then also be converted to the EMF model.
    Downloads: 0 This Week
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  • 20
    A web based tool to generate ERD (Entity Relationship Diagrams)
    Downloads: 0 This Week
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  • 21
    FOML
    FOML is an expressive logic rule language that supports object modeling, analysis, and inference. It naturally supports model-level activities, such as constraints (extending UML diagrams), dynamic compositional modeling, analysis and reasoning about models, model testing, design pattern modeling, specification of Domain Specific Modeling Languages, and meta-modeling. FOML can reason about: 1. The model meta-data (meta-model level reasoning, or syntax reasoning) 2. Data level: reason about a model and its data (instance model, i.e., diagram) FOML is built as a semantic layer on top of PathLP - a compact logic rule language of guarded path expressions, an adaptation of a subset of F-logic.
    Downloads: 0 This Week
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  • 22
    The Genomic Diversity and Phenotype Data Model (GDPDM) captures molecular and phenotypic diversity data. MySQL databases are used to implement the schema. This project develops software tools (written in Java, Perl, etc.) associated with this model.
    Downloads: 0 This Week
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  • 23
    GraphSQL is a database modeling tool.User can build database logic model easily by mouse,dialog operation then generate the SQL script insured right and compatibled with Sybase PowerDesigner.
    Downloads: 0 This Week
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  • 24
    This project is a java web application developer toolbox. It is among other, a simple and powerful framework which does not require dealing with XML files. It also provides a lot of other features, such as a DB abstraction layer, a nice javadoc doclet, a
    Downloads: 0 This Week
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  • 25
    KML is a knowledge base with support of logical modeling. Advanced model is used to represent knowledge as a set of statements similar to natural language sentences. This project hosts a set of model storage library and server (vrb-ols) and clients.
    Downloads: 0 This Week
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