AnkleBreaker Utils Inspector — Free Odin Inspector Alternative

40+ custom inspector attributes and property drawers for Unity Editor. ShowIf, BoxGroup, TabGroup, Button, Required, ProgressBar, PreviewField, TableList, and more — everything you need without the Odin price tag. Free and open source by AnkleBreaker Studio.

Installation

Add via Unity Package Manager using the Git URL:

https://github.com/AnkleBreaker-Studio/AnkleBreaker-Utils-Inspector.git#Release

Attributes

Conditional Visibility & Enable

Attribute	Description
[ShowIf("field")]	Shows field conditionally based on a bool, enum value, or method
[ShowIf("field", value)]	Shows field when field equals value
[HideIf("field")]	Hides field conditionally
[HideIf("field", value)]	Hides field when field equals value
[EnableIf("field")]	Enables/disables field based on condition
[EnableIf("field", value)]	Enables field when field equals value
[DisableInPlayMode]	Disables field during play mode
[DisableInEditorMode]	Disables field in editor mode

Layout & Grouping

Attribute	Description
[BoxGroup("name")]	Groups fields in a labeled box
[BoxGroup("name", foldable: true)]	Foldable box group
[FoldoutGroup("name")]	Collapsible foldout group
[TabGroup("tab")]	Organizes fields into tabs
[HorizontalGroup("name")]	Places fields side by side
[HorizontalGroup("name", 0.5f)]	Horizontal with custom width ratio
[PropertyOrder(n)]	Controls field display order
[PropertySpace(before, after)]	Adds spacing around a field
[SectionHeader("title")]	Draws a section header (CenterLine style, default)
[SectionHeader("title", SectionHeaderStyle.Line)]	Bold label + thin line below
[SectionHeader("title", SectionHeaderStyle.Box)]	Dark box behind title
[SectionHeader("title", SectionHeaderStyle.Clean)]	Bold label only, no decoration

Field Display

Attribute	Description
[ReadOnly]	Makes field read-only in inspector
[LabelText("text")]	Custom label for inspector field
[HideVariableName]	Hides the variable name in inspector
[HideInNormalInspector]	Hides field in default inspector
[SuffixLabel("unit")]	Appends unit text after field (ms, px, %, etc.)
[GUIColor(r, g, b)]	Tints the field with a color
[FolderPath]	Folder picker with browse button
[FreeRange(min, max)]	Slider that allows values outside range

Buttons & Toggles

Attribute	Description
[Button]	Displays a method as a clickable button
[Button("Label")]	Button with custom label
[Button(Mode = ButtonMode.EnabledInPlayMode)]	Play-mode-only button
[ToggleButton]	Boolean displayed as a colored toggle button
[ToggleButton("On", "Off")]	Toggle with custom labels
[ToggleButton(big: true)]	Double-height toggle button
[InlineButton("method", "label")]	Small button next to a field
[EnumToggleButtons]	Enum displayed as toggle button toolbar

Validation & Info

Attribute	Description
[Required]	Marks a reference field as required
[Required("message")]	Required with custom warning message
[ValidateInput("method", "msg")]	Custom validation with error/warning
[HelpBox("msg", type)]	Displays a help box above the field
[InfoBox("msg")]	Informational message box
[ABToolTip("method")]	Dynamic tooltip from a method

Data & Input

Attribute	Description
[ValueDropdown("member")]	Dropdown from a list field or method
[OnValueChanged("method")]	Calls a method when value changes
[MinMaxSlider(min, max)]	Range slider for Vector2 fields
[ProgressBar(min, max)]	Displays float as a colored progress bar
[AutoCompleteText(keys)]	Text field with autocomplete suggestions

Preview & Advanced

Attribute	Description
[PreviewField]	Asset preview with metadata (dimensions, file size, path)
[PreviewField(80)]	Custom preview size. Supports Texture2D, Sprite, Mesh, GameObject
[InlineEditor]	Draws ScriptableObject fields inline
[TableList]	Draws list as a sortable table
[ShowInInspector]	Shows non-serialized fields/properties (read-only)

Serialized Classes

• AB_SerializedDictionary<TKey, TValue> — Serializable dictionary for Unity inspector

Editor Utilities

• ABGroupedEditor — Base editor class handling all grouping, conditional visibility, and layout
• ABEditor — Base editor class with utility methods

Why Choose This Over Odin Inspector?

Odin Inspector is a great tool, but it costs $55+ per seat. AnkleBreaker Utils Inspector provides the most commonly used attributes — ShowIf, BoxGroup, TabGroup, Button, Required, ProgressBar, PreviewField, TableList, and more — completely free and open source. It covers 90% of what most Unity developers use Odin for, at zero cost.

Part of the AnkleBreaker Ecosystem

Package	Description
AnkleBreaker-Core	Base classes, interfaces, delegates
Utils-Inspector (this)	40+ custom inspector attributes
Utils-Extensions	50+ C# extension methods for Unity
Utils-UniversalTypes	Universal wrappers for localization, assets, audio
Unity MCP	268 AI tools for Unity Editor control

Requirements

• Unity 2022.3 LTS or later

License

See LICENSE.md