Code for the Full Inspector screenshots

DictionaryDemoBehavior.cs

using Forge.Editing;
using Newtonsoft.Json;
using System.Collections.Generic;
using UnityEngine;

namespace Forge.Demo {
    public enum MyEnum {
        Option1, Option2, Option3, Option4, Option5
    }

    [JsonObject(MemberSerialization.OptIn)]
    public class DictionaryDemoBehavior : BaseBehavior {
        [JsonProperty]
        public Dictionary<MyEnum, GameObject> EnumGameObjectDict;

        [JsonProperty]
        public Dictionary<string, string> StrStrDict;
    }
}

GenericTypeDemoBehavior.cs

using Forge.Editing;
using Newtonsoft.Json;

namespace Forge.Demo {
    [JsonObject(MemberSerialization.OptIn)]
    public class MyGenericType<T> {
        [JsonProperty]
        public T Value;
    }

    [JsonObject(MemberSerialization.OptIn)]
    public class GenericTypeDemoBehavior : BaseBehavior {
        [JsonProperty]
        public MyGenericType<bool> GenericBool;

        [JsonProperty]
        public MyGenericType<float> GenericFloat;
    }
}

InterfaceDemoBehavior.cs

using Forge.Editing;
using Newtonsoft.Json;

namespace Forge.Demo {
    [JsonObject(MemberSerialization.OptIn)]
    public interface IInterface {
    }

    [JsonObject(MemberSerialization.OptIn)]
    public class Implementation1 : IInterface {
        [JsonProperty]
        public int A;
    }

    [JsonObject(MemberSerialization.OptIn)]
    public class Implementation2 : IInterface {
        [JsonProperty]
        public bool B;
    }

    [JsonObject(MemberSerialization.OptIn)]
    public class InterfaceDemoBehavior : BaseBehavior {
        [JsonProperty]
        public IInterface MyInterface;
    }
}

ListDemoBehavior.cs

using Forge.Editing;
using Newtonsoft.Json;
using System.Collections.Generic;

namespace Forge.Demo {
    [JsonObject(MemberSerialization.OptIn)]
    public class ListDemoBehavior : BaseBehavior {
        [JsonProperty]
        public List<int> Ints;

        [JsonProperty]
        public float[] Floats;
    }
}

PropertiesDemoBehavior.cs

using Forge.Editing;
using Newtonsoft.Json;

namespace Forge.Demo {
    [JsonObject(MemberSerialization.OptIn)]
    public class PropertiesDemoBehavior : BaseBehavior {
        [JsonProperty]
        public int MyProperty { get; private set; }
    }
}

StructDemoBehavior.cs

using Forge.Editing;
using Newtonsoft.Json;

namespace Forge.Demo {
    [JsonObject(MemberSerialization.OptIn)]
    public struct Struct {
        [JsonProperty]
        public int A;

        [JsonProperty]
        public bool B;
    }

    [JsonObject(MemberSerialization.OptIn)]
    public class StructDemoBehavior : BaseBehavior {
        [JsonProperty]
        public Struct Value;
    }
}

TooltipsAndCommentsDemoBehavior.cs

using Forge.Editing;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using UnityEngine;

namespace Forge.Demo {
    [JsonObject(MemberSerialization.OptIn)]
    public class TooltipsAndCommentsDemoBehavior : BaseBehavior {
        [Comment("This is a comment")]
        [JsonProperty]
        public int Comment;

        [Tooltip("This has a tooltip")]
        [JsonProperty]
        public int Tooltip;

        [Margin(50)]
        [JsonProperty]
        public int FarDown;
    }
}