diff --git a/encoding.go b/encoding.go
index b9e090f..1d6cd60 100644
--- a/encoding.go
+++ b/encoding.go
@@ -6,9 +6,6 @@ import (
 	"sync"
 
 	"github.com/spf13/viper/internal/encoding/dotenv"
-	"github.com/spf13/viper/internal/encoding/hcl"
-	"github.com/spf13/viper/internal/encoding/ini"
-	"github.com/spf13/viper/internal/encoding/javaproperties"
 	"github.com/spf13/viper/internal/encoding/json"
 	"github.com/spf13/viper/internal/encoding/toml"
 	"github.com/spf13/viper/internal/encoding/yaml"
@@ -113,20 +110,6 @@ func (r codecRegistry) codec(format string) (Codec, bool) {
 	case "toml":
 		return toml.Codec{}, true
 
-	case "hcl", "tfvars":
-		return hcl.Codec{}, true
-
-	case "ini":
-		return ini.Codec{
-			KeyDelimiter: r.v.keyDelim,
-			LoadOptions:  r.v.iniLoadOptions,
-		}, true
-
-	case "properties", "props", "prop": // Note: This breaks writing a properties file.
-		return &javaproperties.Codec{
-			KeyDelimiter: v.keyDelim,
-		}, true
-
 	case "dotenv", "env":
 		return &dotenv.Codec{}, true
 	}
diff --git a/viper_test.go b/viper_test.go
index 05ca0ce..a4df402 100644
--- a/viper_test.go
+++ b/viper_test.go
@@ -84,58 +84,12 @@ var jsonExample = []byte(`{
     }
 }`)
 
-var hclExample = []byte(`
-id = "0001"
-type = "donut"
-name = "Cake"
-ppu = 0.55
-foos {
-	foo {
-		key = 1
-	}
-	foo {
-		key = 2
-	}
-	foo {
-		key = 3
-	}
-	foo {
-		key = 4
-	}
-}`)
-
-var propertiesExample = []byte(`
-p_id: 0001
-p_type: donut
-p_name: Cake
-p_ppu: 0.55
-p_batters.batter.type: Regular
-`)
-
 var remoteExample = []byte(`{
 "id":"0002",
 "type":"cronut",
 "newkey":"remote"
 }`)
 
-var iniExample = []byte(`; Package name
-NAME        = ini
-; Package version
-VERSION     = v1
-; Package import path
-IMPORT_PATH = gopkg.in/%(NAME)s.%(VERSION)s
-
-# Information about package author
-# Bio can be written in multiple lines.
-[author]
-NAME   = Unknown  ; Succeeding comment
-E-MAIL = fake@localhost
-GITHUB = https://github.com/%(NAME)s
-BIO    = """Gopher.
-Coding addict.
-Good man.
-"""  # Succeeding comment`)
-
 func initConfigs(v *Viper) {
 	var r io.Reader
 	v.SetConfigType("yaml")
@@ -146,14 +100,6 @@ func initConfigs(v *Viper) {
 	r = bytes.NewReader(jsonExample)
 	v.unmarshalReader(r, v.config)
 
-	v.SetConfigType("hcl")
-	r = bytes.NewReader(hclExample)
-	v.unmarshalReader(r, v.config)
-
-	v.SetConfigType("properties")
-	r = bytes.NewReader(propertiesExample)
-	v.unmarshalReader(r, v.config)
-
 	v.SetConfigType("toml")
 	r = bytes.NewReader(tomlExample)
 	v.unmarshalReader(r, v.config)
@@ -165,10 +111,6 @@ func initConfigs(v *Viper) {
 	v.SetConfigType("json")
 	remote := bytes.NewReader(remoteExample)
 	v.unmarshalReader(remote, v.kvstore)
-
-	v.SetConfigType("ini")
-	r = bytes.NewReader(iniExample)
-	v.unmarshalReader(r, v.config)
 }
 
 func initConfig(typ, config string, v *Viper) {
@@ -622,22 +564,11 @@ func TestJSON(t *testing.T) {
 	assert.Equal(t, "0001", v.Get("id"))
 }
 
-func TestProperties(t *testing.T) {
-	v := New()
-
-	v.SetConfigType("properties")
-
-	// Read the properties data into Viper configuration
-	require.NoError(t, v.ReadConfig(bytes.NewBuffer(propertiesExample)), "Error reading properties data")
-
-	assert.Equal(t, "0001", v.Get("p_id"))
-}
-
 func TestTOML(t *testing.T) {
 	v := New()
 	v.SetConfigType("toml")
 
-	// Read the properties data into Viper configuration
+	// Read the TOML data into Viper configuration
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(tomlExample)), "Error reading toml data")
 
 	assert.Equal(t, "TOML Example", v.Get("title"))
@@ -646,42 +577,16 @@ func TestTOML(t *testing.T) {
 func TestDotEnv(t *testing.T) {
 	v := New()
 	v.SetConfigType("env")
-	// Read the properties data into Viper configuration
+	// Read the dotenv data into Viper configuration
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(dotenvExample)), "Error reading env data")
 
 	assert.Equal(t, "DotEnv Example", v.Get("title_dotenv"))
 }
 
-func TestHCL(t *testing.T) {
-	v := New()
-	v.SetConfigType("hcl")
-	// Read the properties data into Viper configuration
-	require.NoError(t, v.ReadConfig(bytes.NewBuffer(hclExample)), "Error reading hcl data")
-
-	// initHcl()
-	assert.Equal(t, "0001", v.Get("id"))
-	assert.Equal(t, 0.55, v.Get("ppu"))
-	assert.Equal(t, "donut", v.Get("type"))
-	assert.Equal(t, "Cake", v.Get("name"))
-	v.Set("id", "0002")
-	assert.Equal(t, "0002", v.Get("id"))
-	assert.NotEqual(t, "cronut", v.Get("type"))
-}
-
-func TestIni(t *testing.T) {
-	// initIni()
-	v := New()
-	v.SetConfigType("ini")
-	// Read the properties data into Viper configuration
-	require.NoError(t, v.ReadConfig(bytes.NewBuffer(iniExample)), "Error reading ini data")
-
-	assert.Equal(t, "ini", v.Get("default.name"))
-}
-
 func TestRemotePrecedence(t *testing.T) {
 	v := New()
 	v.SetConfigType("json")
-	// Read the properties data into Viper configuration v.config
+	// Read the remote data into Viper configuration v.config
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(jsonExample)), "Error reading json data")
 
 	assert.Equal(t, "0001", v.Get("id"))
@@ -701,7 +606,7 @@ func TestRemotePrecedence(t *testing.T) {
 func TestEnv(t *testing.T) {
 	v := New()
 	v.SetConfigType("json")
-	// Read the properties data into Viper configuration v.config
+	// Read the JSON data into Viper configuration v.config
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(jsonExample)), "Error reading json data")
 
 	v.BindEnv("id")
@@ -724,7 +629,7 @@ func TestEnv(t *testing.T) {
 func TestMultipleEnv(t *testing.T) {
 	v := New()
 	v.SetConfigType("json")
-	// Read the properties data into Viper configuration v.config
+	// Read the JSON data into Viper configuration v.config
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(jsonExample)), "Error reading json data")
 
 	v.BindEnv("f", "FOOD", "OLD_FOOD")
@@ -737,7 +642,7 @@ func TestMultipleEnv(t *testing.T) {
 func TestEmptyEnv(t *testing.T) {
 	v := New()
 	v.SetConfigType("json")
-	// Read the properties data into Viper configuration v.config
+	// Read the JSON data into Viper configuration v.config
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(jsonExample)), "Error reading json data")
 
 	v.BindEnv("type") // Empty environment variable
@@ -752,7 +657,7 @@ func TestEmptyEnv(t *testing.T) {
 func TestEmptyEnv_Allowed(t *testing.T) {
 	v := New()
 	v.SetConfigType("json")
-	// Read the properties data into Viper configuration v.config
+	// Read the JSON data into Viper configuration v.config
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(jsonExample)), "Error reading json data")
 
 	v.AllowEmptyEnv(true)
@@ -769,7 +674,7 @@ func TestEmptyEnv_Allowed(t *testing.T) {
 func TestEnvPrefix(t *testing.T) {
 	v := New()
 	v.SetConfigType("json")
-	// Read the properties data into Viper configuration v.config
+	// Read the JSON data into Viper configuration v.config
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(jsonExample)), "Error reading json data")
 
 	v.SetEnvPrefix("foo") // will be uppercased automatically
@@ -829,7 +734,7 @@ func TestEnvKeyReplacer(t *testing.T) {
 func TestEnvSubConfig(t *testing.T) {
 	v := New()
 	v.SetConfigType("yaml")
-	// Read the properties data into Viper configuration v.config
+	// Read the YAML data into Viper configuration v.config
 	require.NoError(t, v.ReadConfig(bytes.NewBuffer(yamlExample)), "Error reading json data")
 	v.AutomaticEnv()
 	v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
@@ -851,10 +756,6 @@ func TestAllKeys(t *testing.T) {
 
 	ks := []string{
 		"title",
-		"author.bio",
-		"author.e-mail",
-		"author.github",
-		"author.name",
 		"newkey",
 		"owner.organization",
 		"owner.dob",
@@ -866,21 +767,12 @@ func TestAllKeys(t *testing.T) {
 		"hobbies",
 		"clothing.jacket",
 		"clothing.trousers",
-		"default.import_path",
-		"default.name",
-		"default.version",
 		"clothing.pants.size",
 		"age",
 		"hacker",
 		"id",
 		"type",
 		"eyes",
-		"p_id",
-		"p_ppu",
-		"p_batters.batter.type",
-		"p_type",
-		"p_name",
-		"foos",
 		"title_dotenv",
 		"type_dotenv",
 		"name_dotenv",
@@ -893,24 +785,13 @@ func TestAllKeys(t *testing.T) {
 			"dob":          dob,
 		},
 		"title": "TOML Example",
-		"author": map[string]any{
-			"e-mail": "fake@localhost",
-			"github": "https://github.com/Unknown",
-			"name":   "Unknown",
-			"bio":    "Gopher.\nCoding addict.\nGood man.\n",
-		},
-		"ppu":  0.55,
-		"eyes": "brown",
+		"ppu":   0.55,
+		"eyes":  "brown",
 		"clothing": map[string]any{
 			"trousers": "denim",
 			"jacket":   "leather",
 			"pants":    map[string]any{"size": "large"},
 		},
-		"default": map[string]any{
-			"import_path": "gopkg.in/ini.v1",
-			"name":        "ini",
-			"version":     "v1",
-		},
 		"id": "0001",
 		"batters": map[string]any{
 			"batter": []any{
@@ -927,27 +808,10 @@ func TestAllKeys(t *testing.T) {
 			"snowboarding",
 			"go",
 		},
-		"age":    35,
-		"type":   "donut",
-		"newkey": "remote",
-		"name":   "Cake",
-		"p_id":   "0001",
-		"p_ppu":  "0.55",
-		"p_name": "Cake",
-		"p_batters": map[string]any{
-			"batter": map[string]any{"type": "Regular"},
-		},
-		"p_type": "donut",
-		"foos": []map[string]any{
-			{
-				"foo": []map[string]any{
-					{"key": 1},
-					{"key": 2},
-					{"key": 3},
-					{"key": 4},
-				},
-			},
-		},
+		"age":          35,
+		"type":         "donut",
+		"newkey":       "remote",
+		"name":         "Cake",
 		"title_dotenv": "DotEnv Example",
 		"type_dotenv":  "donut",
 		"name_dotenv":  "Cake",
@@ -1611,24 +1475,6 @@ func TestFindsNestedKeys(t *testing.T) {
 		"clothing.trousers":   "denim",
 		"owner.dob":           dob,
 		"beard":               true,
-		"foos": []map[string]any{
-			{
-				"foo": []map[string]any{
-					{
-						"key": 1,
-					},
-					{
-						"key": 2,
-					},
-					{
-						"key": 3,
-					},
-					{
-						"key": 4,
-					},
-				},
-			},
-		},
 	}
 
 	for key, expectedValue := range expected {
@@ -1800,32 +1646,6 @@ func TestSub(t *testing.T) {
 	assert.Equal(t, []string{"clothing", "pants"}, subv.parents)
 }
 
-var hclWriteExpected = []byte(`"foos" = {
-  "foo" = {
-    "key" = 1
-  }
-
-  "foo" = {
-    "key" = 2
-  }
-
-  "foo" = {
-    "key" = 3
-  }
-
-  "foo" = {
-    "key" = 4
-  }
-}
-
-"id" = "0001"
-
-"name" = "Cake"
-
-"ppu" = 0.55
-
-"type" = "donut"`)
-
 var jsonWriteExpected = []byte(`{
   "batters": {
     "batter": [
@@ -1849,13 +1669,6 @@ var jsonWriteExpected = []byte(`{
   "type": "donut"
 }`)
 
-var propertiesWriteExpected = []byte(`p_batters.batter.type = Regular
-p_id = 0001
-p_name = Cake
-p_ppu = 0.55
-p_type = donut
-`)
-
 // var yamlWriteExpected = []byte(`age: 35
 // beard: true
 // clothing:
@@ -1882,30 +1695,6 @@ func TestWriteConfig(t *testing.T) {
 		input           []byte
 		expectedContent []byte
 	}{
-		"hcl with file extension": {
-			configName:      "c",
-			inConfigType:    "hcl",
-			outConfigType:   "hcl",
-			fileName:        "c.hcl",
-			input:           hclExample,
-			expectedContent: hclWriteExpected,
-		},
-		"hcl without file extension": {
-			configName:      "c",
-			inConfigType:    "hcl",
-			outConfigType:   "hcl",
-			fileName:        "c",
-			input:           hclExample,
-			expectedContent: hclWriteExpected,
-		},
-		"hcl with file extension and mismatch type": {
-			configName:      "c",
-			inConfigType:    "hcl",
-			outConfigType:   "json",
-			fileName:        "c.hcl",
-			input:           hclExample,
-			expectedContent: hclWriteExpected,
-		},
 		"json with file extension": {
 			configName:      "c",
 			inConfigType:    "json",
@@ -1930,22 +1719,6 @@ func TestWriteConfig(t *testing.T) {
 			input:           jsonExample,
 			expectedContent: jsonWriteExpected,
 		},
-		"properties with file extension": {
-			configName:      "c",
-			inConfigType:    "properties",
-			outConfigType:   "properties",
-			fileName:        "c.properties",
-			input:           propertiesExample,
-			expectedContent: propertiesWriteExpected,
-		},
-		"properties without file extension": {
-			configName:      "c",
-			inConfigType:    "properties",
-			outConfigType:   "properties",
-			fileName:        "c",
-			input:           propertiesExample,
-			expectedContent: propertiesWriteExpected,
-		},
 		"yaml with file extension": {
 			configName:      "c",
 			inConfigType:    "yaml",