diff --git a/cache/src/main/kotlin/org/openrs2/cache/Archive.kt b/cache/src/main/kotlin/org/openrs2/cache/Archive.kt
index 329701cb..63cc078c 100644
--- a/cache/src/main/kotlin/org/openrs2/cache/Archive.kt
+++ b/cache/src/main/kotlin/org/openrs2/cache/Archive.kt
@@ -161,6 +161,17 @@ public abstract class Archive internal constructor(
         return existsNamed(group.krHashCode(), file.krHashCode())
     }
 
+    public fun existsNamedGroup(groupNameHash: Int, file: Int): Boolean {
+        require(file >= 0)
+
+        val entry = index.getNamed(groupNameHash) ?: return false
+        return entry.contains(file)
+    }
+
+    public fun exists(group: String, file: Int): Boolean {
+        return existsNamedGroup(group.krHashCode(), file)
+    }
+
     public fun list(): Iterator<Js5Index.Group<*>> {
         return index.iterator()
     }
@@ -202,6 +213,20 @@ public abstract class Archive internal constructor(
         return readNamed(group.krHashCode(), file.krHashCode(), key)
     }
 
+    @JvmOverloads
+    public fun readNamedGroup(groupNameHash: Int, file: Int, key: XteaKey = XteaKey.ZERO): ByteBuf {
+        require(file >= 0)
+
+        val entry = index.getNamed(groupNameHash) ?: throw FileNotFoundException()
+        val unpacked = getUnpacked(entry, key)
+        return unpacked.read(file)
+    }
+
+    @JvmOverloads
+    public fun read(group: String, file: Int, key: XteaKey = XteaKey.ZERO): ByteBuf {
+        return readNamedGroup(group.krHashCode(), file, key)
+    }
+
     @JvmOverloads
     public fun write(group: Int, file: Int, buf: ByteBuf, key: XteaKey = XteaKey.ZERO) {
         require(group >= 0 && file >= 0)
@@ -228,6 +253,23 @@ public abstract class Archive internal constructor(
         return writeNamed(group.krHashCode(), file.krHashCode(), buf, key)
     }
 
+    @JvmOverloads
+    public fun writeNamedGroup(groupNameHash: Int, file: Int, buf: ByteBuf, key: XteaKey = XteaKey.ZERO) {
+        require(file >= 0)
+
+        val entry = index.createOrGetNamed(groupNameHash)
+        val unpacked = createOrGetUnpacked(entry, key, isOverwriting(entry, file))
+        unpacked.write(file, buf)
+
+        dirty = true
+        index.hasNames = true
+    }
+
+    @JvmOverloads
+    public fun write(group: String, file: Int, buf: ByteBuf, key: XteaKey = XteaKey.ZERO) {
+        return writeNamedGroup(group.krHashCode(), file, buf, key)
+    }
+
     public fun remove(group: Int) {
         require(group >= 0)
 
@@ -287,6 +329,28 @@ public abstract class Archive internal constructor(
         return removeNamed(group.krHashCode(), file.krHashCode(), key)
     }
 
+    @JvmOverloads
+    public fun removeNamedGroup(groupNameHash: Int, file: Int, key: XteaKey = XteaKey.ZERO) {
+        require(file >= 0)
+
+        val entry = index.getNamed(groupNameHash) ?: return
+
+        if (isOverwriting(entry, file)) {
+            removeNamed(groupNameHash)
+            return
+        }
+
+        val unpacked = getUnpacked(entry, key)
+        unpacked.remove(file)
+
+        dirty = true
+    }
+
+    @JvmOverloads
+    public fun remove(group: String, file: Int, key: XteaKey = XteaKey.ZERO) {
+        removeNamedGroup(group.krHashCode(), file, key)
+    }
+
     public override fun flush() {
         if (!dirty) {
             return
diff --git a/cache/src/main/kotlin/org/openrs2/cache/Cache.kt b/cache/src/main/kotlin/org/openrs2/cache/Cache.kt
index 338a5fe5..d6c1aba2 100644
--- a/cache/src/main/kotlin/org/openrs2/cache/Cache.kt
+++ b/cache/src/main/kotlin/org/openrs2/cache/Cache.kt
@@ -106,6 +106,15 @@ public class Cache private constructor(
         return existsNamed(archive, group.krHashCode(), file.krHashCode())
     }
 
+    public fun existsNamedGroup(archive: Int, groupNameHash: Int, file: Int): Boolean {
+        checkArchive(archive)
+        return archives[archive]?.existsNamedGroup(groupNameHash, file) ?: false
+    }
+
+    public fun exists(archive: Int, group: String, file: Int): Boolean {
+        return existsNamedGroup(archive, group.krHashCode(), file)
+    }
+
     public fun list(): Iterator<Int> {
         return archives.withIndex()
             .filter { it.value != null }
@@ -149,6 +158,17 @@ public class Cache private constructor(
         return readNamed(archive, group.krHashCode(), file.krHashCode(), key)
     }
 
+    @JvmOverloads
+    public fun readNamedGroup(archive: Int, groupNameHash: Int, file: Int, key: XteaKey = XteaKey.ZERO): ByteBuf {
+        checkArchive(archive)
+        return archives[archive]?.readNamedGroup(groupNameHash, file, key) ?: throw FileNotFoundException()
+    }
+
+    @JvmOverloads
+    public fun read(archive: Int, group: String, file: Int, key: XteaKey = XteaKey.ZERO): ByteBuf {
+        return readNamedGroup(archive, group.krHashCode(), file, key)
+    }
+
     @JvmOverloads
     public fun write(archive: Int, group: Int, file: Int, buf: ByteBuf, key: XteaKey = XteaKey.ZERO) {
         checkArchive(archive)
@@ -172,6 +192,17 @@ public class Cache private constructor(
         writeNamed(archive, group.krHashCode(), file.krHashCode(), buf, key)
     }
 
+    @JvmOverloads
+    public fun writeNamedGroup(archive: Int, groupNameHash: Int, file: Int, buf: ByteBuf, key: XteaKey = XteaKey.ZERO) {
+        checkArchive(archive)
+        createOrGetArchive(archive).writeNamedGroup(groupNameHash, file, buf, key)
+    }
+
+    @JvmOverloads
+    public fun write(archive: Int, group: String, file: Int, buf: ByteBuf, key: XteaKey = XteaKey.ZERO) {
+        writeNamedGroup(archive, group.krHashCode(), file, buf, key)
+    }
+
     public fun remove(archive: Int) {
         checkArchive(archive)
 
@@ -218,6 +249,17 @@ public class Cache private constructor(
         return removeNamed(archive, group.krHashCode(), file.krHashCode(), key)
     }
 
+    @JvmOverloads
+    public fun removeNamedGroup(archive: Int, groupNameHash: Int, file: Int, key: XteaKey = XteaKey.ZERO) {
+        checkArchive(archive)
+        archives[archive]?.removeNamedGroup(groupNameHash, file, key)
+    }
+
+    @JvmOverloads
+    public fun remove(archive: Int, group: String, file: Int, key: XteaKey = XteaKey.ZERO) {
+        removeNamedGroup(archive, group.krHashCode(), file, key)
+    }
+
     /**
      * Writes pending changes back to the underlying [Store].
      */