Alternatives to Astah SysML
Compare Astah SysML alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Astah SysML in 2026. Compare features, ratings, user reviews, pricing, and more from Astah SysML competitors and alternatives in order to make an informed decision for your business.
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1
Lucidchart
Lucid Software
Lucidchart is an advanced diagramming tool designed to help businesses and teams optimize their processes, systems, and workflows with intelligent, data-driven diagrams. The platform combines powerful AI features, such as AI-generated diagrams, data linking, and real-time collaboration, to make visualizing complex systems and architectures faster and more efficient. Lucidchart supports multiple use cases, including process maps, flowcharts, technical diagrams, organizational charts, and systems planning. Its seamless integrations with popular apps like Jira, Confluence, Slack, and Teams allow for enhanced collaboration, enabling teams to align on priorities and act on insights quickly. Lucidchart is the perfect tool for anyone looking to create professional diagrams in less time, while fostering better decision-making and innovation.Starting Price: $7.95/month/user -
2
StarUML
StarUML
Compatible with UML 2.X standard metamodel and diagrams: class, object, use case, component, deployment, composite structure, sequence, communication, statechart, activity, timing, interaction overflow, information flow and profile diagram. Support modeling with SysML diagrams: requirement, block definition, internal block, and parametric diagram. Supports Retina (High-DPI) Display. All diagrams, texts and icons are razor sharp and can be exported to High-DPI images (PNG and JPEG). Easily discover and install third-party extensions. Many extensions are open source and hosted on Github. Supports many shorthands in Quick Edit to create elements and relationships at once such as sub-classes, supporting interfaces, etc.Starting Price: $99 per user -
3
objectiF RM
microTOOL
objectiF RM requirements engineering and management software offers comprehensive support for requirements elicitation, analysis, modeling, documentation and validation in line with IREB and Business Analysis standards. UML and SysML models help visualizing dependencies, relations, refinements, processes, stakeholders and goals. System architecture can be designed with block diagrams. Requirements specification documents can be generated in real time. Reviews and tests can be created to validate and verifiy all requirements. Backlogs offer hierarchical structures and dashboards deliver current information on the overall status of requirements. Teams collaborate on objectiF RM either on premise or in the cloud with integrated instant messageing and videocall options.Starting Price: €79/month/concurrent user -
4
Cameo Systems Modeler
Dassault Systèmes
Cameo Systems Modeler ™ is an industry leading cross-platform collaborative Model-Based Systems Engineering (MBSE) environment, which provides smart, robust, and intuitive tools to define, track, and visualize all aspects of systems in the most standard-compliant SysML models and diagrams. The environment enables systems engineers to: Run engineering analysis for design decisions evaluation and requirements verification, continuously check model consistency and track design progress with metrics. System models can be managed in remote repositories, stored as standard XMI files, or published to documents, images, and web views to address different stakeholder concerns. -
5
Ilograph
Ilograph
Ilograph is an interactive diagramming platform designed to help engineers and technical teams document, explain, and explore complex systems through dynamic architecture diagrams. Instead of relying on traditional static diagrams, Ilograph allows users to create interactive, zoomable diagrams that reveal different levels of detail and perspectives within a system. Authors define system resources and the relationships between them using a lightweight model-based approach often referred to as “diagrams-as-code,” which adds structure, consistency, and reusability to documentation. It automatically generates layouts and provides features such as autocomplete, built-in icon libraries, and customizable styles that simplify the process of creating and maintaining diagrams as systems evolve. Each diagram can include multiple perspectives that show how components interact in different contexts, such as data flows, infrastructure architecture, or business processes.Starting Price: $11.99 per month -
6
Zuken GENESYS
Zuken
GENESYS is Zuken's model-based systems engineering platform designed to manage and communicate product information effectively, enabling teams to focus on innovation. It supports the entire engineering process from initial concept to verification and validation within a single environment, capturing all relevant product information across different levels, from high-level use cases and system context to system and subsystem definitions, down to detailed design connections. GENESYS ensures every system design is coherent, consistent, and complete, providing feature-rich authoring capabilities with automatic diagram generation and rule-based formatting. It offers validation of logical consistency and behavior enabled by executable models and seamless integration with existing authoring tools. Built upon the Comprehensive Systems Definition Language (CSDL), which conforms to the Systems Modeling Language (SysML) standard, GENESYS provides semantic precision. -
7
Eclipse Papyrus
Eclipse Foundation
To address any specific domain, every part of Eclipse Papyrus may be customized: UML profile, model explorer, diagram notation and style, properties views, palette and creation menus, and much more. Eclipse Papyrus enables model-based techniques: model-based simulation, model-based formal testing, safety analysis, performance/trade-offs analysis, architecture exploration. Eclipse Papyrus is an industrial-grade open source Model-Based Engineering tool. Eclipse Papyrus has notably been used successfuly in industrial projects and is the base platform for several industrial modeling tools. Eclipse Papyrus provides also a complete support to SysML in order to enable model-based system engineering. All the modeling features of Eclipse Papyrus are designed to be customizable and to maximize reuse. -
8
IcePanel
IcePanel
IcePanel is a collaborative, interactive modelling and diagramming tool built around the C4 model that lets teams create a structured, interactive map of their software architecture so everyone can understand how systems work and make aligned technical decisions. It uses a model-based philosophy with reusable objects so diagrams stay consistent across different views and levels of detail, allowing users to go from high-level context overviews down into app and component relationships, and link models to real codebases to keep designs up to date. IcePanel supports visual storytelling with tags, flows, metadata, and statuses for current versus future states, enabling teams to illustrate user journeys, dependencies, and architectural changes in a single trusted source of truth that updates everywhere. Its interactive diagrams facilitate communication across technical and non-technical audiences, streamline onboarding, reduce ambiguity, and support collaboration through drafts and feedback -
9
Syndeia
Intercax
A Digital Thread is a graph whose nodes are elements in various enterprise repositories, tools, and version control systems, and whose edges are intra-model relationships within each tool and inter-model relationships created and managed by Syndeia between the nodes. Syndeia provides model transformation services to build the digital thread graph, such as drag-n-drop requirements from Jama or DOORS-NG to SysML, generate Simulink models and PLM part structures from SysML models, connect behavior elements in SysML to software code in GitHub, or track the development status of a sub-system in JIRA directly from SysML. Syndeia provides services to search, compare, and bi-directionally synchronize connected models in the digital thread, such as compare and sync changes in system architecture to PLM part structure, compare connected SysML and Simulink models, or sync changes in DOORS-NG requirements to SysML. -
10
Diagramming AI
Diagramming AI
Diagramming AI is an AI-powered platform designed to simplify diagram creation for professionals across various industries. It allows users to instantly generate various diagrams like flowcharts, UML, sequence diagrams, Gantt charts, and ER diagrams from text descriptions. Users can also interact with AI in discussion mode and update mode to refine and edit diagrams in real time. The platform integrates a visual editor with Excalidraw, enhancing diagrams with intuitive drag-and-drop controls. It automatically resolves diagram errors and supports formats like Mermaid, PlantUML, and Graphviz. Diagramming AI also features a flexible export system and provides templates to jumpstart projects. The tool caters to developers, project managers, data analysts, and other professionals needing to visualize processes, systems, and structures.Starting Price: $3 per month -
11
Astah UML
Astah
Astah UML is a powerful, easy-to-use diagramming tool tailored for creating UML diagrams in software development. It supports a wide range of UML 2.x diagrams, including class, use case, sequence, activity, and component diagrams, and provides users with tools for designing and managing complex projects. The platform features assist functions to speed up diagram creation, such as auto-creating class diagrams, alignment guides, and auto-layout. Additionally, users can integrate with other tools like Miro, PlantUML, and yUML, and customize the platform through an extensive library of plug-ins. Astah UML also supports reverse engineering of Java, C#, and C++ code and offers seamless code generation from diagrams. Diagrams can be exported in multiple formats, and the platform integrates well with office applications. It’s suitable for students, individual engineers, and development teams, making it a versatile tool for both learning and professional use in software modeling. -
12
Cloud Maker
Cloud Maker
Diagram Driven Cloud Infrastructure - Drag and drop design, automated deployment and the benefits of Infrastructure-as-Code, without the complexity! Cloud Maker lets Solution Architects and DevOps Engineers rapidly diagram infrastructure, check for security issues with Cloud Maker Overwatch, and deploy to the Cloud at the click of a button. Under the hood, we automatically generate Infrastructure-as-Code so that you get all the benefits without having to write a single line of code. Key features and benefits: - Visually design beautiful, standardized infrastructure diagrams - Shift security left with our Overwatch design-time security scanner - Automatically generate IaC - Deploy directly to the Cloud with Cloud Maker Pipelines - Consume your designs and our deployment engine through Azure DevOps, GitHub Actions & JFrog CI/CD integrations.Starting Price: $27/user/month -
13
Gleek
Gleek
Gleek is a text-to-diagram tool designed for developers to create various types of diagrams using only the keyboard, eliminating the need for a mouse. It supports a range of diagram types, including flowcharts, UML class and sequence diagrams, state machine diagrams, Gantt charts, user journey diagrams, and entity-relationship diagrams. Gleek uses a unique, intuitive syntax that allows users to quickly generate diagrams by describing them in text and offers tools for live collaboration and version control. The platform allows for easy customization of diagram design, export options, and the use of pre-designed templates. It is ideal for quickly visualizing software architectures, processes, and project plans. Gleek helps streamline the process of diagramming with a focus on simplicity, speed, and efficient collaboration, making it especially useful for software developers, project managers, and engineers.Starting Price: $6.95 per month -
14
Astah Professional
Change Vision
Astah Professional is a software modeling tool that enables you to build UML, ER diagrams, Data Flow Diagrams, Flowcharts, mind maps and more to create a clear understanding among teams. Text-to-models, pre-installed templates and libraries help you create diagrams easy and fast. Unlike drawing-tools, you create "models" with Astah. So you can just drag-and-drop models to create diagrams. Any changes to the models will apply for all the diagrams so you can make sure that your models and diagrams are consistent.Starting Price: $11.99 per month -
15
AVEVA Diagrams
AVEVA
AVEVA Diagrams is a fast, efficient and effective tool for creating and managing your Process Flow Diagrams (PFDs), Piping and Instrumentation Diagrams (P&IDs), Heating, Ventilation, and Air Conditioning (HVAC) and similar drawings with the assurance that they remain fully integrated with the project database. AVEVA Diagrams is a fast, efficient and effective tool for creating and managing your Process Flow Diagrams (PFDs), Piping and Instrumentation Diagrams (P&IDs), Heating, Ventilation and Air Conditioning (HVAC), and similar drawings with the assurance that they remain fully integrated with the project database. Using AVEVA’s proprietary database technology; as the diagram is designed, data is logged and stored in a schematic model database. This allows design information to be managed effectively and accessed easily within a secure and shared data-centric environment in the cloud through AVEVA Connect or deployed on-premises as part of our full IE&D solutions. -
16
Altova UModel
Altova
Keep your favorite diagram views and UML tools at your fingertips to improve efficiency and productivity. Everything is customizable in the UML diagrams you create with UModel – size, position, color, typeface characteristics, and line styles. Use case diagrams are often considered separately from other software architecture diagrams because they capture project requirements and can define the scope of an application under development. It’s not likely any project will use all UML diagram types – software modeling allows flexibility in preferences and styles, and various tasks require different diagram types. Regardless which diagrams you create, UModel provides an unmatched visual interface and convenient features to make UML modeling easy and fun. Each diagram type has its own toolbar, so the screen won’t be crowded with irrelevant icons. You can turn toolbar text labels on or off and you can display or hide any toolbar.Starting Price: €129 one-time payment -
17
Merit Modeler
Ideamerit s.r.o.
Merit Modeler is a free desktop application for creating professional diagrams — including Flowcharts, Use Case diagrams, Data Flow diagrams and many other modeling notations. Designed for analysts, developers, students and system designers, Merit Modeler helps you visualize processes, document software systems and communicate ideas clearly. Because it runs locally on your computer, it is fast, secure and fully available offline - no subscriptions, no online accounts.Starting Price: $0 -
18
RFFlow
RFF Electronics
RFFlow is a software program for drawing flowcharts, organization charts, and other diagrams. RFFlow is everything you need to start communicating your ideas with professional-quality charts and diagrams. For presentations, printed documents, or the Web, great-looking diagrams have never been so easy to accomplish. RFFlow works well with Microsoft Office and Corel WordPerfect Office. After drawing your chart, you can copy and paste it into Microsoft Word, Microsoft PowerPoint, Corel WordPerfect, or any other Windows Application. RFFlow supports Object Linking and Embedding in Windows as an OLE Server. This makes it very easy to use RFFlow diagrams in other Windows programs. You simply copy the chart to the Clipboard and paste it into the destination Windows application. You can embed or link your chart. In both cases, you can edit the chart by double-clicking on it in the destination application. RFFlow can produce a wide variety of flowcharts, organization charts, and diagrams.Starting Price: $19 per user -
19
DiagramGPT
Eraser
3 types are currently available – entity relationship diagrams, cloud architecture diagrams, and sequence diagrams. A 4th type, flow charts are coming soon. Given user input, DiagramGPT uses OpenAI's GPT-4 to classify the appropriate diagram type and to generate Eraser's diagram-as-code syntax.Starting Price: $10 per user per month -
20
AIFlowchart
AIFlowchart
This application will generate unique diagrams. If you don't like the generated diagram recreate it again, and then it will generate a new diagram. This tool will help you to generate diagrams with explanations. This means tools will explain each step of the diagram. Many themes are available. One customizable theme is also available. which means you can change the diagrams' colors. Our AI flowchart tool generates unique diagrams every time you use it, providing you with a wide range of creative options. Create flowcharts, graph diagrams, sequence diagrams, and pie charts effortlessly, all from a single tool. Generate diagrams from various sources, including text data, PDF files, or even blog content. We empower you to explore different visual representations until you find the perfect fit for your needs. -
21
PlantUML
PlantUML
PlantUML is a powerful and flexible open source tool that allows users to create UML diagrams using simple text descriptions. It supports various diagram types, including sequence, use case, class, component, state, and activity diagrams. PlantUML also extends beyond traditional UML with support for other diagram types such as Gantt charts, mind maps, and entity-relationship diagrams. The platform uses a straightforward syntax to generate high-quality diagrams, making it easy for developers, system architects, and project managers to visualize complex systems and processes. Users can export diagrams in multiple formats like PNG, SVG, LaTeX, and ASCII art. PlantUML is compatible with a range of tools and integrates seamlessly into documentation workflows, enhancing productivity for teams and individuals.Starting Price: Free -
22
DGRM.net
Boyko A. S.
DGRM is a free online flowchart editor designed for fast and simple diagram creation. It allows users to build flowcharts directly in their browser without installation or registration. The platform supports various diagram types, including business processes, mind maps, sequence diagrams, and database schemas. Its grid-based system ensures clean, well-aligned diagrams without manual adjustments. DGRM offers a minimal interface with no unnecessary buttons, making it easy for anyone to use. Users can share diagrams via links or export parts as images. Overall, DGRM provides a lightweight and efficient solution for creating structured visual diagrams.Starting Price: Free -
23
Software Ideas Modeler
Software Ideas
Software Ideas Modeler is an essential tool in software engineering. It is a feature-rich CASE tool that can help you with software design using various diagram notations and modeling tools. Try our UML modeler, ERD designer, flowchart maker, wireframing tools, or BPMN editor for free. The diagramming modules are optimized for particular tasks in the specific domain. Tools for UML diagrams, Layer diagrams, Flowcharts, and Data Flow Diagrams and others help you design your software or its crucial parts properly. Documentation and glossary modules in our CASE tool allow you to communicate your design effectively. Professionally process the user requirements using Advanced Use Case analysis or User Stories depending on your preference. Turn code to diagrams using the code analytic tools for many popular programming languages. Generate source code scaffold and code parts using source code generators, also using custom code templates.Starting Price: $68 one-time payment -
24
Architecto
AutonomOPS AI
Architecto is an AI-powered architecture design platform that helps technical teams create cloud system architectures quickly and efficiently. It transforms natural language input, code repositories, and infrastructure data into structured, reviewable diagrams. The platform supports multi-cloud environments, allowing users to design systems across AWS, Google Cloud, Azure, and hybrid infrastructures. Architecto combines diagram creation, architecture review, and documentation into a single workflow to reduce complexity. It includes advanced analysis tools for security, cost, scalability, and compliance to improve decision-making early in the design process. Integration with tools like GitHub, Jira, Slack, and VS Code ensures seamless collaboration across teams. Overall, Architecto enables engineers and architects to design, analyze, and document systems faster without starting from scratch.Starting Price: $18/month -
25
Valentina Studio
Paradigma Software
Create, administer, query and explore Valentina DB, MySQL, MariaDB, PostgreSQL and SQLite databases for FREE. Design business reports running in Valentina Studio Pro, on Valentina Server or in an application with an Application Developer Kit. Backward Engineering in Standard with forwarding Engineering in Valentina Studio Pro. Reverse engineering and create diagrams for existing databases. Add new objects to diagrams. Write SQL queries with auto-completion, color syntax. Define, manage, save favorite queries; access recent queries. Function browser dictionary of each function. Consoles for errors, warnings, and performance. Search, Export result records into CSV, JSON, Excel. Edit properties of multiple objects at the same time. Drill down to tables and fields; incredible fast searching. Reverse engineering and create diagrams for existing databases. Add new objects to diagrams. Add/drop users, and groups, and manage privileges.Starting Price: $79 -
26
AutoDiagram
AutoDiagram
AutoDiagram is an AI-powered platform that transforms textual descriptions into professional-grade diagrams, streamlining the visualization process for professionals across various fields. Users can simply input their concepts in plain text, and the AI interprets the context to generate accurate visuals, supporting over 20 diagram types including flowcharts, ER diagrams, architecture maps, and sequence diagrams. The platform offers intelligent error prevention to ensure high-quality outputs and provides multiple export options such as SVG, PNG, and PDF for seamless sharing and collaboration. AutoDiagram is accessible through a free plan, allowing the creation of up to five diagrams per month, and a Pro plan at $9 per month for unlimited diagram creation and advanced features. We prioritize data security with industry-standard protocols and encryption measures to protect your diagrams and information.Starting Price: $9 per month -
27
Eraser
Eraser
Eraser is a docs and diagrams platform for engineering teams. Eraser enables developers to create docs and diagrams at the speed of thought via a minimal UI, keyboard-driven flows, markdown, and diagram-as-code. Docs and diagrams can be saved on the Eraser web app as well as in your GitHub repository.Starting Price: $10 per user per month -
28
dAIgram
dAIgram
Daigram is an AI-powered diagram generator that uses OCR (Optical Character Recognition) technology to convert images of flowcharts, diagrams, and other visual data into editable digital files. Users can upload hand-drawn sketches, screenshots, or existing diagrams, which are then analyzed by the AI to identify shapes, links, and text. These elements are transformed into digital, editable diagrams, allowing for easy modification and customization. The platform supports various diagram types, including flowcharts and graphs, with plans to add more types like sequence diagrams, user journey maps, and mind maps. Daigram provides an intuitive interface to adjust the diagrams, such as changing shapes, colors, and text, and then allows users to export their work in formats like JPG, PNG, PDF, and JSON. It is especially useful for professionals in software development, project management, data analysis, education, and marketing, as it streamlines the creation and modification of diagrams. -
29
ArgoUML
ArgoUML
ArgoUML is a free, open source UML modeling tool supporting all standard UML 1.4 diagrams. It is available on any Java platform and is translated into ten languages. ArgoUML allows users to create and edit various UML diagrams, including class, state, use case, activity, collaboration, deployment, and sequence diagrams. The software features a user-friendly interface divided into four panels: a project hierarchy, an editor for the selected diagram, a to-do list, and a detail panel for object selection. ArgoUML is distributed under the Eclipse Public License and is widely used worldwide, having been downloaded over 80,000 times. The platform offers user manuals, quick guides, and resources for both users and developers, and it encourages community involvement and contributions. ArgoUML’s open-source nature allows for bug reporting, feature requests, and active participation in its ongoing development.Starting Price: Free -
30
ChartAI
ChartAI
ChartAI is the first AI-driven diagramming application that helps professionals make diagrams and charts in 2 seconds with AI. Simply input your diagram requirements, and let ChartAI do the rest. Within minutes, you'll have professional-looking diagrams or charts that are ready to use. Rapidly generates diagrams, allowing users to focus on analysis and presentation. An intuitive interface makes it easy for both novices and experts to use. Creates visually appealing diagrams suitable for various business contexts. Supports various diagram styles, including flowcharts, organizational charts, and data visualizations. Allows users to generate synthetic datasets for testing and development purposes. Users can sign in with their Google account, making it easy to access and manage their ChartAI account and data.Starting Price: Free -
31
Lekh Diagram
Lekh App
Create beautiful diagrams and UI wireframes with Lekh Diagram, a sketch recognition diagramming app, on iOS and Android Devices. -
32
Gliffy
Perforce
Gliffy is a versatile, cloud-based diagramming tool that enables users to create a wide range of visuals, including UML diagrams, flowcharts, wireframes, and more. Its intuitive drag-and-drop interface allows for seamless diagram creation directly within popular platforms like Confluence and Jira, enhancing collaboration and streamlining workflows. Gliffy supports real-time collaboration, enabling multiple users to edit and comment on diagrams simultaneously, which fosters efficient teamwork and ensures that all stakeholders are aligned. The platform offers a comprehensive library of shapes and templates, catering to various industries and use cases, from software engineering to business process modeling. Users can export diagrams in multiple formats, such as PDF, JPEG, PNG, and SVG, facilitating easy sharing and integration into other documents or presentations. Gliffy is SOC 2 Type II compliant.Starting Price: $7.99 per month -
33
dbdiagram.io
dbdiagram.io
dbdiagram.io is a free, simple tool to draw database diagrams (ERDs) by typing DSL code. dbdiagram uses the popular DBML. You type and an ER diagram appears. Your fingers never need to leave your keyboard. Create beautiful PDFs of your ER diagram to circulate internally. Who says ERDs are so difficult to create? Share your diagrams online with your colleagues and customers with just one click and if you use popular web frameworks like Rails or Django, simply upload your schemarb or models.py file!Starting Price: $9 per month -
34
GoJS
Northwoods Software
GoJS is a JavaScript and TypeScript library for building interactive diagrams and graphs. From simple flowcharts and org charts to highly-specific industrial diagrams, SCADA and BPMN diagrams, medical diagrams such as genograms and outbreak modeling diagrams, and more. GoJS makes constructing graphs of complex nodes, links, and groups easy with customizable templates and layouts. GoJS offers advanced features for user interactivity such as drag-and-drop, copy-and-paste, in-place text editing, tooltips, context menus, automatic layouts, templates, data binding and models, transactional state and undo management, palettes, overviews, event handlers, commands, extensible tools for custom operations, and customizable animations. We maintain hundreds of sample diagrams, detailing different examples of interactivity, templates, and user logic for you to start from. We offer free developer-to-developer support during evaluation.Starting Price: 3,495 -
35
DrawSQL
DrawSQL
With DrawSQL you can design, visualize, and collaborate on entity relationship diagrams for your databases. Easily visualize your database schema and see how everything fits together. Having a living document of your app schema helps when architecting a new feature or onboarding a new team member. Invite your teammates to collaborate on your database diagrams. With drawSQL as a single source of truth, no need to manually sync diagram files between different developers and offline tools anymore. Create professional diagrams that stand out. Unlike other database clients, drawSQL's editor is easy to use, looks nice, and focuses on helping you visualize your database schemas without being bloated with other database management features. Create a diagram for your app database in less than 15 minutes. Work together to design, model, and document the database schema of your app. Provides diagram versioning and access controls.Starting Price: $15 per month -
36
YAKINDU Model Viewer
itemis AG
YAKINDU Model Viewer (YMV) is a tool designed for the viewing of models created with MATLAB Simulink and shows the corresponding block diagrams with a similar look and feel as in Simulink. YAKINDU Model Viewer gives you the flexibility to quickly navigate, explore, and search very large and complex models. It provides browser-like navigation on diagrams, allowing a fast drill-down of the system hierarchy. It also features rich visualization, signal tracing, requirements tracing, gesture-based interactions, and much more. YAKINDU Model Viewer provides various views to visualize a model’s outline and the properties of elements. -
37
e!Sankey
ifu Hamburg
The most popular software for creating Sankey diagrams. Visualize the material & energy flows or value streams in your company or along the supply chain. Share these appealing diagrams in reports or presentations. Data visualization is a great way to simplify and understand complex relationships in process systems. e!Sankey is the perfect tool for that! Sankey diagrams go beyond simple flow charts. Their arrows have a width proportional to the flow quantity and draw attention to the largest flows in the system. Design your Sankey diagrams in the net editor: Just draw arrows and processes to build your diagrams easily. Benefit from a clear entry and unit management, including unit conversions. Use e!Sankey to calculate flow quantities. This makes the generation of Sankey diagrams even more comfortable. -
38
Mermaid Chart
Mermaid Chart
Effortlessly create complex diagrams from markdown-style text and collaborate with your team in real time using Mermaid Chart. This innovative text-based diagramming tool, enhanced by Mermaid AI, streamlines documentation processes, enhancing workflows and communication across your team. The Teams feature enables you to create projects, invite members, and maintain a unified source of truth, significantly boosting collaboration and productivity. Elevate your diagramming capabilities with Mermaid AI by writing simple prompts to generate complete diagrams in seconds. Generate sophisticated diagrams using AI, text, and visual editing capabilities, revolutionizing the way you create and manage diagrams for a smarter, more efficient workflow.Starting Price: $6.67 per month -
39
Coggle
Coggle
Produce beautiful notes quickly and easily. Share them with friends and colleagues to work on your ideas together. Use Coggle to map out your processes, systems and algorithms using our powerful new. Coggle is online software for creating and sharing mindmaps and flowcharts. It works online in your browser: there's nothing to download or install. to start diagramming now! Whether you're taking notes, brainstorming, planning, or doing something awesomely creative, it is super simple to visualise your ideas with Coggle. Share with as many friends or colleagues as you like. Changes you make will show up instantly in their browser, wherever they are in the world. Invite your friends and colleagues to work with you, at the same time, on your diagrams. Drag-and-drop images right from your desktop to your diagrams. There's no limit to the number of images you can add. Add text labels and images that aren't part of the diagram tree to annotate parts of your map.Starting Price: $5 per month -
40
Microsoft Visio
Microsoft
Work visually. Diagramming made simple. Easily and intuitively draw flowcharts, diagrams, org charts, floor plans, engineering designs, and more with Visio. Use modern shapes and templates with the familiar Office experience. Collaborate on Visio flowcharts to include insights from all stakeholders. With Office 365*, your team can work on a diagram at the same time. Connect your flowcharts and diagrams to real-time data. Use applied shape formatting to automatically update flowcharts when the underlying data changes, either in Visio or through Office 365*. Work together on diagrams from a web browser, almost anywhere. Draw a flowchart, map an IT network, build an organizational chart, or document a business process. Create professional diagrams effortlessly, collaborate more efficiently, connect to real-time data, and automate workflows.Starting Price: $5 per month -
41
AltonaLab
AltonaLab
AltonaLab IoT software has a powerful and easy-to-use CAD environment, suitable for the design of complicated diagrams. Please read the documentation and enjoy the exciting world of IoT software! The new connection is established when the user left-clicks with the mouse over the block’s input or output, without releasing the mouse button drag the mouse to the direction of another input/output, and then release the mouse button over it. Double click over the block or click with the right mouse button opens the Parameters editor where every parameter is presented with the separated row. The parameter Name is very important and is unique within the diagram! When the diagram is locked, the application uses this parameter to determine the diagram's size. This is a tricky way to hide all the blocks and contours which are outside the visible area (the area determined from parameters LockedCanvasHeight / LockedCanvasWidth) and only controls from a visible area to be shown.Starting Price: $50 one-time payment -
42
TeamFlow
TeamFlow
Create clear and consistent process diagrams. Make it easy for everyone in your organization to understand what's going on. Build a Process Repository for your organization. This gives your team a single source of truth for all your process documentation. With TeamFlow® your diagram is more than just a picture. Each diagram is a fully-featured graph data model of your process. TeamFlow® uses a universal data model giving you more than just a picture. Jump right in and create your process diagram in seconds. Drag and drop tasks, meetings, decisions and more to bring your process to life. Easily visualize your process with clean shapes and colors so that everyone in your organization can understand your process flows. TeamFlow® uses a simple and easy-to-understand design language so that your process diagrams have a consistent look each and every time. TeamFlow® is committed to privacy and security at every level.Starting Price: $10 per month -
43
Galaxy Modeler
Ideamerit
Galaxy Modeler is a schema design tool for GraphQL data modeling. Draw diagrams, add notes, captions to the diagrams, import existing schema structures and generate reports or schema creation scripts. Supported platforms: - GraphQL Key features: - Data modeling and schema design - Visualization of GraphQL schemas - Import from URL - Generation of interactive HTML reports - Generation of schema creation scripts - Various themes and styles for reports - Multiple display modes - Support for sub-diagramsStarting Price: $99 -
44
ChatUML
ChatUML
ChatUML is an AI-assisted diagram generator that simplifies the creation of complex diagrams. Our tool uses cutting-edge AI algorithms to generate clear diagrams. -
45
Devici
Security Compass
Devici is a diagram-focused threat modeling tool that helps AppSec teams and DevSecOps engineers create clear, repeatable models without relying on scattered diagrams or manual documents. Teams map system components, describe their behavior through attributes, and Devici identifies relevant threats and possible mitigations from its maintained library. The platform supports real-time collaboration, reusable patterns, templates, and version history, which helps groups standardize how they document risks across applications. Developers can contribute without needing deep threat modeling knowledge, while security teams can guide reviews and maintain consistency. Devici offers a practical way to keep threat models current as designs change and reduces the effort required to move from architecture diagrams to actionable security decisions.Starting Price: Free -
46
Sankey Flow Show
THORTEC Software
Sankey diagrams as well as classic flow diagrams gain a new quality with Sankey Flow Show. - Find the right line strength for all connection lines of your classic flow diagram with a single slider. Or use the separate data layer to represent the energy flow, the mass flow, or the flow of further streaming quantities in Sankey diagrams. Sankey Flow Show reduces your effort! Drawing attractive diagrams with Sankey Flow Show is straight forward. And once a diagram is drawn, you can enter other values in the separate data layer without the need for manual graphical adjustments. Discover how easy and fast you can draw interesting diagrams. No installation, never miss an update... Sankey Flow Show is a modern web application running in your browser. Share your work with others, export your diagrams to standard formats (svg, jpg, png, pdf, etc.), view and restore previous revisions, collaborate live and stay ahead of your competitors.Starting Price: $3.99 one-time payment -
47
Flexberry AI Assistant
Flexberry AI Assistant
AI assistant for business analysts, making it easier and faster for business analysts and other specialists like UI/UX designers to analyze text, and generate mockup forms, SQL script, and UML diagrams in a minute. An AI Assistant that allows, through artificial intelligence automate some part of analysts' and UI/UX designer's day-to-day work relating to the text. Extracting information from natural language to build an information system. Structuring information by category and building project metadata in accordance with industry best practices. Generating prototypes of visual project diagrams, databases,s, and business process diagrams. Analyzing of statements and requirements for completeness. Assistance in the preparation of project documentation by automating the formation of standard texts. Quick and easy way to create an MVP for a proposed solution. As the name suggests, the AI Assistant is for assisting and not completely replacing human task. -
48
Bhava
Bhava
Bhava is an AI-powered diagram editor that lets you create and refine a wide array of technical and conceptual diagrams, like flowcharts, system architecture layouts, UML, ERDs, sequence diagrams, network maps, mind maps, org charts, hardware schematics, and more, in seconds from plain text or even hand-drawn sketches. You simply describe what you need or paste an image (like a whiteboard photo or screenshot), and the AI instantly generates a fully editable and styled diagram, complete with smart layouts, connectors, and automatically placed icons for AWS, GCP, Azure, Kubernetes, and other libraries. Bhava also supports seamless import of existing diagrams from tools like draw.io or Mermaid, preserving layers, groups, and styling, and lets you continue editing and export the final output to standard formats such as PNG or SVG. Bhava provides design elements, styles, layers, groups, fully editable, and an intuitive interface for ongoing refinements.Starting Price: $9.99 per month -
49
Modeldraw
Atlantean IT
Modeldraw is a comprehensive diagramming solution that's completely free for teams, offering a full suite of tools for professional communication. Create specialized diagrams for software development, business planning, and Agile workflows, including UML diagrams, system architecture maps, flowcharts, mind maps, and user story maps. With powerful real-time collaboration and an intuitive interface, Modeldraw allows unlimited team members to work together with no credit card required.Starting Price: $0 / Free for Teams -
50
InSight Diagrammer
MindFusion
You have extensive collections of predefined diagram items for business, devices, networks, people, signs, objects and of course the standard flowchart node shapes. Each diagram item can have unlimited number of incoming and outgoing links. Each link can take a variety of base and head shapes, the middle part is also customizable and can be in different forms and with different count of segments. You can change the color, width and transparency of the links. The nodes can hold images and display text. Their appearance is also completely customizable. InSight Diagrammer lets you perform a wide range of actions - from the standard creating and saving of existing diagrams to more complicated like undo and redo. You can create unlimited number of links and nodes, move, modify and save them. Items can be rotated and selection of multiple items is also supported. Each diagram item can be locked, its position in the Z-order of the diagram changed.Starting Price: $45 one-time payment
