v5.1.1

General changes across model types:

• OpenPonk project's inner window starts maximised
• OpenPonk's internal menu shows entry for new project creation as well

(Onto)UML:

• Fixed model with generalization sets making impossible to add attribute type
• Allow saving models with any filled data types
• Autocomplete data types in the text field
• Include UML specs within builds to prevent downloading it from the internet
• Improved exported XMI compatibility with other tools

New known issues in v5.x.x:

• Simulations and verifications/validations are not cooperating with undo-redo and might override each-other's changes
• Zooming is often quite laggy
• PDF exports have mirrored font italics
• [BPMN] Undo/redo with pool changes can lead to temporary visual glitches

v5.1.0

General changes across model types:

• Added a tool for setting a sharper display scaling
• Improved empty project names
• Use new Settings GUI
• Fixed project save corruption in multiple plugins

(Onto)UML:

• Added coloring of elements based on stereotypes
• Show and allow changing of essential and inseparable properties again

New known issues in v5.x.x:

• Simulations and verifications/validations are not cooperating with undo-redo and might override each-other's changes
• Zooming is often quite laggy
• PDF exports have mirrored font italics
• [UML] Types cannot be filled if any generalization sets exist in the model
• [BPMN] Undo/redo with pool changes can lead to temporary visual glitches

nightly-2026-10-10T00:56:29Z

Removed coverage calculation

v5.0.1

General changes across model types:

• Exported diagram images no longer show selection handles/highlights
• Moving an unselected resizable diagram element no longer causes it to show the resize handles
• Fixed a bug that caused canceling a project save to save the project anyway
• Saving any file (project, diagram image, XMI...) now prefills a default filename
• Diagram PDF export no longer asks for a zoom level
• Selecting 2 containers and dragging them, elements from all are moved instead of just one
• Removed removal confirmation dialogs from project tree

(Onto)UML:

• Fixed a regression causing inability to write custom association end multiplicities

BPMN:

• Fixed multiple BPMN validation issues - should work now
• Fixed multiple simulation issues - should work now
• Resolved large amount of .bpmn export issues - should work now and be more specification-compliant than ever
• Further improved pool/lane layouting, resizing, and undoing removal
• Moving elements no longer removes their selection highlights

New known issues in v5.x.x:

• Simulations and verifications/validations are not cooperating with undo-redo and might override each-other's changes
• Zooming is often quite laggy
• PDF exports have mirrored font italics
• Undo/redo with BPMN pools can lead to temporary visual glitches

v5.0.0

New model types:

• Entity-Relationship models
• DEMO (Design and Engineering Methodology for Organizations - re-added after an overhaul)

General changes across model types:

• Added Undo-Redo
• Reshuffled items in bottom and top toolbars
  • Show/Hide and layouting is now in top Diagram submenu
  • Created new Model submenu where entire-model-specific items have been moved into
• Project tree is updated automatically and remembers expanded nodes
• Model elements can be removed from project tree
• GUI layout now keeps sizes of left and right sidebars properly
• Project can now be renamed
• Redesigned Project Browser
  • Recent projects remember all projects, now just last one
  • Examples are now opened through the Project Browser
  • Models have icons for faster selection
• PDF exports are now valid files on Windows and have italics on Linux (only in builds available on GitHub)
• Removed zoom in/out animation (zooming is not as nice, but faster)
• Check for new version feature is a little more robust
• Resizable diagram elements selection frame now moves with the element properly when resized
• Enlarged element resize handles
• Removed removal confirmation dialog (since undo exists)
• Added Ctrl+S for saving a project
• After creation, elements have name field selected in form instead of showing a popup dialog
• F2 or double click on canvas elements triggers renaming
• OpenPonk can be switched to dark theme (via Pharo Settings) even if a diagram is open - still not recommended tough

(Onto)UML:

• Improved layouting of packages
• Added a few more example diagrams/models

BORM:

• Added BORM simulations
• Participant labels are no longer moving outside of participant when renamed

BPMN:

• Reworked pools and pool lanes
  • Lanes are being added through palette, edited individually
  • Lanes are now model elements and lanes know its elements
  • Fixed an issue that pools could not be selected with certain amounts of lanes
  • Pools are resizing without stretching its contents
• Fixed multiple conditions for possible flow sources/targets
• Added annotations and associations
• Added boundary events
• Improved layouting of pools and subprocesses
• Items of subprocesses and pools move with the containers
• Resizing of elements works the same way as rest of the plugins/model types
• Added an example diagram/model
• Added empty gateways (for XOR - visual alternative to existing X)
• Multiline names are displayed slightly better

New known issues:

• Simulations and verifications/validations are not cooperating with undo-redo and might override each-other's changes
• Zooming is often quite laggy
• PDF exports have inverted font italics
• Canceling saving a project still saves the project
• BPMN validations and simulations are not working
• BPMN pool resizing and lane adding can lead to some visual glitches

v4.1.3

General changes across model types:

• Fixed notes and boundaries missing after project load or switching shown diagram

(Onto)UML:

• Fixed errors when removing a class attribute or operation, then switching to other diagram showing the same class

BORM:

• Fixed constraints glitching after making a copy of a diagram
• Fixed nodes removed in one diagram not being removed in other diagrams

BPMN:

• Fixed diagram node positions not being saved or copied properly
• Fixed errors when diagrams with flows are loaded

v4.1.2

General changes across model types:

• Fixed a project loading error caused by attempt to create a diagram element even if one already exists
• If a diagram references non-existent model element, show a warning and remove the diagram element, instead of failing to load the entire project
• When removing a diagram element, only deselect that one, instead of all elements

(Onto)UML changes:

• Changing type of attributes linked to an association is no longer allowed (as it did not make sense and it fixes errors when loading projects)
• Remove class attributes linked to an association when the association is removed (fixes errors when loading projects)

v4.1.1

General changes across model types:

• Minor code refactoring and cleanup

(Onto)UML changes:

• Fixed multiple errors after OntoUML-to-UML transformation
• Keep class size properly with 2 or more attributes / operations
• Fixed removal of classes with attributes coming from associations
• Sync attributes in a class and ends of associations in case of attributes coming from associations

v4.1.0

General changes across model types:

• Deleting elements without confirmation keyboard shortcut changed from Ctrl/Cmd+del to Shift+del
• Fixed drive errors when loading or saving files on latests builds of Windows 11
• Fixed shapes moving to locations at time of last project save/load
• Enlarged clickable zones of lines (especially when zoomed out)
• Fixed a problem causing leftover elements remaining in a model after their dependency was removed
• Fixed some layout glitches in versions info
• Added a few context menu icons

(Onto)UML changes:

• Added experimental association end label hiding; end labels same as class names are hidden by default
• Reworked generalization set editing
• Fixed unclickable attributes / operations
• Fixed transformation from OntoUML to UML missing associations
• Fixed model validation bug causing removal of the only property owner
• Element color menu now marks current and default colors and shows the default color even if not in the usual list of possible colors

v4.0.3

General changes across model types:

• Fixed note and boundary creation
• Fixed multiple memory leaks

(Onto)UML changes:

• Fixed generalization set persistence
• Fixed UMLClass comment icon
• Updated OntoUML verification settings to match actual options