diff --git a/.github/actions/setup-runner/action.yml b/.github/actions/setup-runner/action.yml
new file mode 100644
index 000000000..9948f0a5d
--- /dev/null
+++ b/.github/actions/setup-runner/action.yml
@@ -0,0 +1,87 @@
+name: Setup runner
+description: Setup the runner with the necessary tools and dependencies.
+
+inputs:
+  flutter-version:
+    description: Flutter version to use.
+    default: stable
+  cache-key:
+    description: Cache key to use for restoring and saving the cache.
+    default: ${{ hashFiles('**/pubspec.yaml') }}
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup environment
+      # By forcing puro (and hence the pub-cache) onto the same drive as the checkout,
+      # we can avoid symlink issue between local and network drives on windows.
+      id: setup
+      shell: bash
+      run: |
+        export PURO_ROOT=$(dirname $GITHUB_WORKSPACE)/puro
+        mkdir -p $PURO_ROOT
+
+        echo $PURO_ROOT/bin >> $GITHUB_PATH
+        echo $PURO_ROOT/shared/pub_cache/bin/ >> $GITHUB_PATH
+        echo $PURO_ROOT/envs/default/flutter/bin/ >> $GITHUB_PATH
+
+        echo PURO_ROOT=$PURO_ROOT >> $GITHUB_ENV
+        echo PUB_CACHE=$PURO_ROOT/shared/pub_cache >> $GITHUB_ENV
+        echo MELOS_SDK_PATH=$PURO_ROOT/envs/default/flutter/ >> $GITHUB_ENV
+
+        echo "week=$(date +'%Y-%U')" >> $GITHUB_OUTPUT
+
+    - name: Restore cache
+      # TODO: Avoid skipping restore on Windows 
+      # (see https://github.com/pingbird/puro/issues/87)
+      if: runner.os != 'Windows'
+      id: restore
+      uses: actions/cache/restore@v4
+      with:
+        path: ${{ env.PURO_ROOT }}
+        key: setup-runner-${{ runner.os }}-${{ runner.arch }}-${{ steps.setup.outputs.week }}-${{ inputs.cache-key }}
+        restore-keys: setup-runner-${{ runner.os }}-${{ runner.arch }}-
+
+    - name: Install puro (posix)
+      # See https://puro.dev/
+      # Skip on any cache hit (partial or full)
+      if: runner.os != 'Windows' && steps.restore.outputs.cache-matched-key == ''
+      shell: bash
+      run: curl -sS -o- https://puro.dev/install.sh | PURO_VERSION="1.4.6" bash
+
+    - name: Install puro (windows)
+      # We always install on windows, as we currently don't restore a cache (see TODO above)
+      if: runner.os == 'Windows' && steps.restore.outputs.cache-matched-key == ''
+      shell: pwsh
+      run: >-
+        Invoke-WebRequest
+        -Uri "https://puro.dev/builds/1.4.6/windows-x64/puro.exe"
+        -OutFile "$Env:PURO_ROOT";
+        &"$Env:PURO_ROOT\puro.exe" install-puro --promote
+
+    - name: Upgrade puro and flutter
+      shell: bash
+      run: |
+        puro upgrade-puro
+        puro use --global ${{ inputs.flutter-version }}
+        puro upgrade ${{ inputs.flutter-version }}
+        puro gc
+
+    - name: Activate melos
+      if: steps.restore.outputs.cache-matched-key == ''
+      shell: bash
+      run: puro pub global run melos --version || puro pub global activate melos
+
+    - name: Melos bootstrap
+      shell: bash
+      run: puro pub global run melos bootstrap
+
+    - name: Save cache
+      # Saving on feature branches will only benefit reruns, so we don't bother.
+      # Feature branches inherit the cache from the main branch anyway.
+      # This saves on cache storage.
+      if: github.ref == 'refs/heads/main' && steps.restore.outputs.cache-hit != 'true'
+      uses: actions/cache/save@v4
+      with:
+        path: ${{ env.PURO_ROOT }}
+        key: ${{ steps.restore.outputs.cache-primary-key }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4058963b5..e866b86a7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -321,13 +321,16 @@ jobs:
         with:
           submodules: "recursive"
 
+      - name: Setup runner
+        uses: ./.github/actions/setup-runner
+
       - name: Bump ulimit
         run: |
           ulimit -n
           ulimit -n 10240
 
       - name: Enable ccache
-        run: echo "PATH=/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH" >> $GITHUB_ENV
+        run: echo "/usr/lib/ccache:/usr/local/opt/ccache/libexec" >> $GITHUB_PATH
 
       - name: Fetch artifacts
         uses: actions/download-artifact@v4
@@ -335,19 +338,6 @@ jobs:
           name: librealm-ios
           path: packages/realm_dart/binary/ios
 
-      - name: Setup Flutter
-        uses: subosito/flutter-action@v2
-        with:
-          channel: "stable"
-
-      - name: Setup Melos
-        run: |
-          dart pub global activate melos
-          dart pub global run melos bootstrap
-
-      - name: Install dependencies
-        run: dart pub get
-
       - name: Launch Simulator
         uses: futureware-tech/simulator-action@v3
         with:
@@ -431,18 +421,8 @@ jobs:
           name: librealm-android
           path: packages/realm_dart/binary/android
 
-      - name: Setup Flutter
-        uses: subosito/flutter-action@v2
-        with:
-          channel: "stable"
-
-      - name: Setup Melos
-        run: |
-          dart pub global activate melos
-          dart pub global run melos bootstrap
-
-      - name: Install dependencies
-        run: dart pub get
+      - name: Setup Runner
+        uses: ./.github/actions/setup-runner
 
       # Hack to free up space on the runner to ensure we have enough diskspace to run the emulator
       - name: Remove unnecessary files (dotnet, etc.)
@@ -526,15 +506,8 @@ jobs:
         with:
           submodules: "recursive"
 
-      - name: Setup Flutter
-        uses: subosito/flutter-action@v2
-        with:
-          channel: "stable"
-
-      - name: Setup Melos
-        run: |
-          dart pub global activate melos
-          dart pub global run melos bootstrap
+      - name: Setup Runner
+        uses: ./.github/actions/setup-runner
 
       - name: Delete generated files in realm_dart
         run: |
@@ -629,15 +602,8 @@ jobs:
         with:
           submodules: "recursive"
 
-      - name: Setup Flutter
-        uses: subosito/flutter-action@v2
-        with:
-          channel: "stable"
-
-      - name: Setup Melos
-        run: |
-          dart pub global activate melos
-          dart pub global run melos bootstrap
+      - name: Setup Runner
+        uses: ./.github/actions/setup-runner
 
       - name: Compile to wasm
         run: flutter build web --wasm -t integration_test/all_tests.dart
diff --git a/.github/workflows/dart-desktop-tests.yml b/.github/workflows/dart-desktop-tests.yml
index 1d65b3cca..0a22a26c2 100644
--- a/.github/workflows/dart-desktop-tests.yml
+++ b/.github/workflows/dart-desktop-tests.yml
@@ -50,16 +50,8 @@ jobs:
           name: librealm-${{ steps.runner_os_lowercase.outputs.os }}
           path: packages/realm_dart/binary/${{ steps.runner_os_lowercase.outputs.os }}
 
-      - name: Setup Dart SDK
-        uses: dart-lang/setup-dart@main
-        with:
-          sdk: stable
-
-      - name: Setup Melos
-        run: |
-          dart pub global activate melos
-          melos bootstrap --no-flutter
-          melos setup
+      - name: Setup Runner
+        uses: ./.github/actions/setup-runner
 
       - name: Bump ulimit on macos
         run: |
@@ -85,6 +77,7 @@ jobs:
         if: inputs.runner == 'ubuntu-latest'
         run: |
           sudo apt-get install lcov
+          melos setup
           melos coverage:convert
           melos coverage:gather
           melos coverage:groom
diff --git a/.github/workflows/deploy-baas.yml b/.github/workflows/deploy-baas.yml
index 3e7263aa8..15a5a897a 100644
--- a/.github/workflows/deploy-baas.yml
+++ b/.github/workflows/deploy-baas.yml
@@ -25,19 +25,8 @@ jobs:
         with:
           submodules: false
 
-      - name: Setup Dart SDK
-        uses: dart-lang/setup-dart@main
-        with:
-          sdk: stable
-          architecture: 'x64'
-
-      - name: Setup Melos
-        run: |
-          dart pub global activate melos
-          dart pub global run melos bootstrap --no-flutter
-
-      - name: Install dependencies
-        run: dart pub get
+      - name: Setup Runner
+        uses: ./.github/actions/setup-runner
 
       - name: Deploy cluster and apps
         run: dart run realm_dart deploy-apps --baasaas-api-key ${{ secrets.BAASAAS_API_KEY }} --differentiator ${{ inputs.differentiator }}
diff --git a/.github/workflows/flutter-desktop-tests.yml b/.github/workflows/flutter-desktop-tests.yml
index a5234499b..13c55e297 100644
--- a/.github/workflows/flutter-desktop-tests.yml
+++ b/.github/workflows/flutter-desktop-tests.yml
@@ -61,19 +61,8 @@ jobs:
           name: librealm-${{ steps.runner_os_lowercase.outputs.os }}
           path: packages/realm_dart/binary/${{ steps.runner_os_lowercase.outputs.os }}
 
-      - name: Setup Flutter
-        uses: subosito/flutter-action@v2
-        with:
-          channel: 'stable'
-          architecture: ${{ inputs.arch }}
-
-      - name: Setup Melos
-        run: |
-          dart pub global activate melos
-          dart pub global run melos bootstrap
-
-      - name: Install dependencies
-        run: dart pub get
+      - name: Setup Runner
+        uses: ./.github/actions/setup-runner
 
       - name: Bump ulimit
         run: |
diff --git a/.github/workflows/prepare-release.yml b/.github/workflows/prepare-release.yml
index 06a0edf42..334e97cf7 100644
--- a/.github/workflows/prepare-release.yml
+++ b/.github/workflows/prepare-release.yml
@@ -27,14 +27,8 @@ jobs:
           version: ${{ inputs.version }}
           version-suffix: ''
 
-      - name : Setup Dart SDK
-        uses: dart-lang/setup-dart@main
-        with:
-          sdk: stable
-          architecture: 'x64'
-
-      - name: Setup Melos
-        run: dart pub global activate melos
+      - name: Setup Runner
+        uses: ./.github/actions/setup-runner
 
       - name: Update pubspec.yaml files
         run: REALM_VERSION=${{ steps.update-changelog.outputs.new-version }} melos run update:version:realm
@@ -46,15 +40,15 @@ jobs:
           replace: "  s.version$1= '${{ steps.update-changelog.outputs.new-version }}'"
           include: '**realm.podspec'
 
-      - name: Update libraryVersion in realm_core.dart
+      - name: Update libraryVersion in realm_library.dart
         id: update-libraryVersion
         uses: jacobtomlinson/gha-find-replace@b76729678e8d52dadb12e0e16454a93e301a919d #! 2.0.0
         with:
           find: "const libraryVersion = '[^']*';"
           replace: "const libraryVersion = '${{ steps.update-changelog.outputs.new-version }}';"
-          include: 'packages/realm_dart/lib/src/native/realm_core.dart'
+          include: 'packages/realm_dart/lib/src/handles/native/realm_library.dart'
 
-      - name: Make sure we updated libraryVersion in realm_core.dart
+      - name: Make sure we updated libraryVersion in realm_library.dart
         run: |
           if [ '${{ steps.update-libraryVersion.outputs.modifiedFiles }}' != '1' ]; then
             echo 'Expected exactly one modified file, got ${{ steps.update-libraryVersion.outputs.modifiedFiles }}'
diff --git a/.github/workflows/publish-release.yml b/.github/workflows/publish-release.yml
index d531907b0..ead5bb1a1 100644
--- a/.github/workflows/publish-release.yml
+++ b/.github/workflows/publish-release.yml
@@ -30,15 +30,8 @@ jobs:
         echo "version=$pkgVersion$pkgSuffix" >> $GITHUB_OUTPUT
       shell: bash
 
-    - name: Setup Flutter
-      uses: subosito/flutter-action@v2
-      with:
-        channel: 'stable'
-
-    - name: Setup Melos
-      run: |
-        dart pub global activate melos
-        dart pub global run melos bootstrap
+    - name: Setup Runner
+      uses: ./.github/actions/setup-runner
 
     - name: Download all artifacts
       uses: dawidd6/action-download-artifact@71072fbb1229e1317f1a8de6b04206afb461bd67 # 3.1.2
@@ -161,15 +154,8 @@ jobs:
         name: release-bundle
         path: release
 
-    - name: Setup Flutter
-      uses: subosito/flutter-action@v2
-      with:
-        channel: 'stable'
-
-    - name: Setup Melos
-      run: |
-        dart pub global activate melos
-        dart pub global run melos bootstrap
+    - name: Setup Runner
+      uses: ./.github/actions/setup-runner
 
     # realm_flutter has symlinks to native binaries which should not be packaged
     - name: Cleanup symlinks
diff --git a/.github/workflows/setup-runner.yml b/.github/workflows/setup-runner.yml
deleted file mode 100644
index 5cb457cca..000000000
--- a/.github/workflows/setup-runner.yml
+++ /dev/null
@@ -1,39 +0,0 @@
-name: Setup runner
-
-on:
-  workflow_dispatch: # For debug
-  workflow_call:
-    inputs:
-      runner:
-        description: Platforms to execute on.
-        required: true
-        type: string
-      flutter-version:
-        description: Flutter version to use.
-        type: string
-        default: stable  
-
-jobs:
-  setup-runner:
-    runs-on: ${{ inputs.runner }}
-    steps:
-      - name: Puro
-        run: >-
-            which puro
-            || curl -o- https://puro.dev/install.sh | PURO_VERSION="1.4.5" bash
-        shell: bash
-      - run: puro upgrade-puro
-      - run: puro use ${{ inputs.flutter-version }}
-
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          submodules: "recursive"
-
-      - name: Melos
-        run: puro pub global activate melos
-      - run: melos bootstrap
-      - run: melos setup
-
-  
-  
diff --git a/.github/workflows/terminate-baas.yml b/.github/workflows/terminate-baas.yml
index 547d5a32a..7336dc931 100644
--- a/.github/workflows/terminate-baas.yml
+++ b/.github/workflows/terminate-baas.yml
@@ -25,19 +25,8 @@ jobs:
         with:
           submodules: false
 
-      - name: Setup Dart SDK
-        uses: dart-lang/setup-dart@main
-        with:
-          sdk: stable
-          architecture: 'x64'
-
-      - name: Setup Melos
-        run: |
-          dart pub global activate melos
-          dart pub global run melos bootstrap --no-flutter
-
-      - name: Install dependencies
-        run: dart pub get
+      - name: Setup Runner
+        uses: ./.github/actions/setup-runner
 
       - name: Terminate baas
         run: dart run realm_dart delete-apps --baasaas-api-key ${{ secrets.BAASAAS_API_KEY }} --differentiator ${{ inputs.differentiator }}
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 483d755b2..86eebf893 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -24,6 +24,7 @@
     "fnum",
     "geospatial",
     "HRESULT",
+    "intf",
     "keepalive",
     "keypaths",
     "loggable",
@@ -32,6 +33,8 @@
     "nodoc",
     "nullptr",
     "posix",
+    "puro",
+    "pwsh",
     "riscv",
     "sublist",
     "sublists",
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6f365ff35..c39e33b18 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,51 @@
 ## vNext (TBD)
 
+### Enhancements
+* None
+
+### Fixed
+* None
+
+### Compatibility
+* Realm Studio: 15.0.0 or later.
+
+### Internal
+* Using Core x.y.z.
+
+## 3.0.0 (2024-06-07)
+
 ### Breaking Changes
 * To avoid dependency on `dart:io`
   - `AppConfiguration.httpClient` is now of type [`Client`](https://pub.dev/documentation/http/latest/http/Client-class.html) and
-  - `AppConfiguration.baseFilePath` is now of type `String`
-  
+  - `AppConfiguration.baseFilePath` is now of type `String`.
+
+  Assuming you are configuring these today, migration is easy:
+  ```dart
+  import 'dart:io';
+  import 'package:realm_dart/realm.dart';
+
+  final client = HttpClient();
+  final dir = Directory.current;
+  final config = AppConfiguration(
+    'your-app-id',
+    httpClient: client,
+    baseFilePath: dir,
+  );
+  ```
+  becomes:
+  ```dart
+  import 'dart:io';
+  import 'package:realm_dart/realm.dart';
+  import 'package:http/io_client.dart';
+
+  final client = HttpClient();
+  final dir = Directory.current;
+  final config = AppConfiguration(
+    'your-app-id',
+    httpClient: IOClient(client),
+    baseFilePath: dir.path,
+  );
+  ```
   (Issue [#1374](https://github.com/realm/realm-dart/issues/1374))
 
 ### Enhancements
@@ -43,6 +84,7 @@
 * Disabled codesigning of Apple binaries. (Issue [#1679](https://github.com/realm/realm-dart/issues/1679))
 * Drop building xcframework for catalyst. (Issue [#1695](https://github.com/realm/realm-dart/issues/1695))
 * Using xcode 15.4 for native build. (Issue [#1547](https://github.com/realm/realm-dart/issues/1547))
+* Using puro on CI. ([#1710](https://github.com/realm/realm-dart/pull/1710))
 
 ## 2.3.0 (2024-05-23)
 
diff --git a/melos.yaml b/melos.yaml
index 7cc7c4cba..92539f09d 100644
--- a/melos.yaml
+++ b/melos.yaml
@@ -40,7 +40,7 @@ scripts:
       - build:native
       - build:binding
       - build:dart
-      
+
   build:native:
     exec: dev build
     packageFilters:
@@ -121,7 +121,7 @@ scripts:
     run: >-
       find lib test integration_test -name '*.dart' -not -name '*.g.dart' -not -name '*.realm.dart' -not -name 'realm_bindings.dart' 2> /dev/null
       | xargs dart format --fix --line-length 160
-    exec: 
+    exec:
       concurrency: 1 # only one project at a time to keep output sane
 
   upgrade:
@@ -143,7 +143,7 @@ scripts:
     run: >-
       find lib test integration_test -name '*.dart' -not -name '*.g.dart' -not -name '*.realm.dart' -not -name 'realm_bindings.dart' 2> /dev/null
       | xargs dart format --fix --line-length 160 --output none --set-exit-if-changed
-    exec: 
+    exec:
       concurrency: 1 # only one project at a time to keep output sane
 
   lint:pana:
@@ -152,7 +152,7 @@ scripts:
       concurrency: 1 # only one project at a time to keep output sane
     packageFilters:
       published: true
-    
+
   coverage:
     description: Generate, check and render coverage.
     steps:
@@ -223,4 +223,3 @@ scripts:
       - coverage
       - analyze
       - lint
-  
\ No newline at end of file
diff --git a/packages/realm/example/pubspec.yaml b/packages/realm/example/pubspec.yaml
index 507f4ac87..9325d070a 100644
--- a/packages/realm/example/pubspec.yaml
+++ b/packages/realm/example/pubspec.yaml
@@ -11,7 +11,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  realm: ^2.3.0
+  realm: ^3.0.0
   characters: ^1.1.0
 
 dev_dependencies:
diff --git a/packages/realm/ios/realm.podspec b/packages/realm/ios/realm.podspec
index ea3217075..1d7500d5a 100644
--- a/packages/realm/ios/realm.podspec
+++ b/packages/realm/ios/realm.podspec
@@ -19,7 +19,7 @@ puts "bundleId is #{bundleId}"
 
 Pod::Spec.new do |s|
   s.name                      = 'realm'
-  s.version                   = '2.3.0'
+  s.version                   = '3.0.0'
   s.summary                   = 'The official Realm SDK for Flutter'
   s.description               = <<-DESC
                                     Realm is a mobile database - an alternative to SQLite and key-value stores.
diff --git a/packages/realm/macos/realm.podspec b/packages/realm/macos/realm.podspec
index 53b968505..bfb61b9db 100644
--- a/packages/realm/macos/realm.podspec
+++ b/packages/realm/macos/realm.podspec
@@ -36,7 +36,7 @@ puts "bundleId is #{bundleId}"
 
 Pod::Spec.new do |s|
   s.name                      = 'realm'
-  s.version                   = '2.3.0'
+  s.version                   = '3.0.0'
   s.summary                   = 'The official Realm SDK for Flutter'
   s.description               = <<-DESC
                                     Realm is a mobile database - an alternative to SQLite and key-value stores.
diff --git a/packages/realm/pubspec.yaml b/packages/realm/pubspec.yaml
index ca476a6e2..0b2264332 100644
--- a/packages/realm/pubspec.yaml
+++ b/packages/realm/pubspec.yaml
@@ -1,6 +1,6 @@
 name: realm
 description: The official Realm SDK for Flutter. Realm is a mobile database - an alternative to SQLite and key-value stores.
-version: 2.3.0
+version: 3.0.0
 
 homepage: https://www.realm.io
 repository: https://github.com/realm/realm-dart
@@ -13,7 +13,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  realm_dart: ^2.3.0
+  realm_dart: ^3.0.0
 
 flutter:
   plugin:
diff --git a/packages/realm_common/pubspec.yaml b/packages/realm_common/pubspec.yaml
index b9d7cfcca..e97f238ed 100644
--- a/packages/realm_common/pubspec.yaml
+++ b/packages/realm_common/pubspec.yaml
@@ -3,7 +3,7 @@ description: >-
              Hosts the common code shared between realm, realm_dart and realm_generator packages.
              This package is part of the official Realm Flutter and Realm Dart SDKs.
 
-version: 2.3.0
+version: 3.0.0
 
 homepage: https://www.realm.io
 repository: https://github.com/realm/realm-dart
diff --git a/packages/realm_dart/lib/src/cli/metrics/metrics_command.dart b/packages/realm_dart/lib/src/cli/metrics/metrics_command.dart
index 2fb0f1f75..b18b582fc 100644
--- a/packages/realm_dart/lib/src/cli/metrics/metrics_command.dart
+++ b/packages/realm_dart/lib/src/cli/metrics/metrics_command.dart
@@ -18,7 +18,7 @@ import 'options.dart';
 import '../common/utils.dart';
 
 // stamped into the library by the build system (see prepare-release.yml)
-const realmCoreVersion = '14.7.0';
+const realmCoreVersion = '14.9.0';
 
 class MetricsCommand extends Command<void> {
   @override
diff --git a/packages/realm_dart/lib/src/handles/native/realm_library.dart b/packages/realm_dart/lib/src/handles/native/realm_library.dart
index a574bc298..bfc585d62 100644
--- a/packages/realm_dart/lib/src/handles/native/realm_library.dart
+++ b/packages/realm_dart/lib/src/handles/native/realm_library.dart
@@ -10,7 +10,7 @@ import 'realm_bindings.dart';
 const bugInTheSdkMessage = "This is likely a bug in the Realm SDK - please file an issue at https://github.com/realm/realm-dart/issues";
 
 // stamped into the library by the build system (see prepare-release.yml)
-const libraryVersion = '2.3.0';
+const libraryVersion = '3.0.0';
 
 final realmLib = () {
   final result = RealmLibrary(initRealm());
diff --git a/packages/realm_dart/lib/src/handles/web/decimal128.dart b/packages/realm_dart/lib/src/handles/web/decimal128.dart
index 58240b22b..342433918 100644
--- a/packages/realm_dart/lib/src/handles/web/decimal128.dart
+++ b/packages/realm_dart/lib/src/handles/web/decimal128.dart
@@ -1,9 +1,27 @@
 // Copyright 2024 MongoDB, Inc.
 // SPDX-License-Identifier: Apache-2.0
 
-import '../decimal128.dart' as intf;
+import 'package:decimal/decimal.dart';
+
+import 'package:realm_dart/src/convert.dart';
+
 import 'web_not_supported.dart';
 
+import '../decimal128.dart' as intf;
+
+/// This is not a compliant IEEE 754-2008 Decimal128 implementation, as it is
+/// just based on the [decimal](https://pub.dev/packages/decimal) package.
+/// Which is based on the [rational](https://pub.dev/packages/rational) package,
+/// which is again based on the [BigInt] class.
+///
+/// The issues are mostly in some of the odd corner cases of IEEE 754-2008
+/// Decimal128, such as:
+/// * -0 < 0,
+/// * NaN != NaN,
+/// * 1 / 0 = Inf, etc.
+///
+/// Also, be warned that this class is incredible slow compared to the native
+/// implementation.
 class Decimal128 implements intf.Decimal128 {
   static final zero = Decimal128.fromInt(0);
 
@@ -23,17 +41,75 @@ class Decimal128 implements intf.Decimal128 {
   static final negativeInfinity = -infinity;
 
   /// Parses a string into a [Decimal128]. Returns `null` if the string is not a valid [Decimal128].
-  static Decimal128? tryParse(String source) => webNotSupported();
+  static Decimal128? tryParse(String source) => Decimal.tryParse(source).convert(Decimal128._);
 
   /// Parses a string into a [Decimal128]. Throws a [FormatException] if the string is not a valid [Decimal128].
-  factory Decimal128.parse(String source) => webNotSupported();
+  factory Decimal128.parse(String source) => Decimal128._(Decimal.parse(source));
 
   /// Converts a `int` into a [Decimal128].
-  factory Decimal128.fromInt(int value) => webNotSupported();
+  factory Decimal128.fromInt(int value) => Decimal128._(Decimal.fromInt(value));
 
   /// Converts a `double` into a [Decimal128].
-  factory Decimal128.fromDouble(double value) => webNotSupported();
+  factory Decimal128.fromDouble(double value) {
+    if (value.isNaN) return nan;
+    if (value.isInfinite) return value.isNegative ? negativeInfinity : infinity;
+    return Decimal128._(Decimal.parse(value.toString()));
+  }
+
+  final Decimal _value;
+  Decimal128._(Decimal value) : _value = value.truncate(scale: 6144);
+
+  @override
+  Decimal128 operator *(covariant Decimal128 other) => Decimal128._(_value * other._value);
+
+  @override
+  Decimal128 operator +(covariant Decimal128 other) => Decimal128._(_value + other._value);
+
+  @override
+  Decimal128 operator -() => Decimal128._(-_value);
+
+  @override
+  Decimal128 operator -(covariant Decimal128 other) => Decimal128._(_value - other._value);
+
+  // Note IEEE 754 Decimal128 defines division with zero as infinity, similar to double
+  @override
+  Decimal128 operator /(covariant Decimal128 other) => Decimal128._((_value / other._value).toDecimal(scaleOnInfinitePrecision: 6144));
+
+  @override
+  bool operator <(covariant Decimal128 other) => _value < other._value;
+
+  @override
+  bool operator <=(covariant Decimal128 other) => _value <= other._value;
+
+  @override
+  bool operator >(covariant Decimal128 other) => _value > other._value;
+
+  @override
+  bool operator >=(covariant Decimal128 other) => _value >= other._value;
+
+  @override
+  Decimal128 abs() => Decimal128._(_value.abs());
+
+  @override
+  int compareTo(covariant Decimal128 other) {
+    final sign = _value.compareTo(other._value);
+    if (sign < 0) return -1;
+    if (sign > 0) return 1;
+    return 0;
+  }
+
+  @override
+  bool get isNaN => this == nan;
+
+  @override
+  int toInt() => _value.toBigInt().toInt();
+
+  @override
+  String toString() => _value.toStringAsExponential(27);
+
+  @override
+  operator ==(Object other) => other is Decimal128 && _value == other._value;
 
   @override
-  noSuchMethod(Invocation invocation) => webNotSupported();
+  int get hashCode => _value.hashCode;
 }
diff --git a/packages/realm_dart/pubspec.yaml b/packages/realm_dart/pubspec.yaml
index b4a63abd2..7099fdcd4 100644
--- a/packages/realm_dart/pubspec.yaml
+++ b/packages/realm_dart/pubspec.yaml
@@ -1,6 +1,6 @@
 name: realm_dart
 description: The official Realm SDK for Dart. Realm is a mobile database - an alternative to SQLite and key-value stores.
-version: 2.3.0
+version: 3.0.0
 
 homepage: https://www.realm.io
 repository: https://github.com/realm/realm-dart
@@ -23,12 +23,14 @@ dependencies:
   path: ^1.0.0
   pubspec_parse: ^1.0.0
   pub_semver: ^2.1.0
-  realm_common: ^2.3.0
-  realm_generator: ^2.3.0
+  realm_common: ^3.0.0
+  realm_generator: ^3.0.0
   tar: ^1.0.1
   build_runner: ^2.1.0
   http: ^1.0.0
   cancellation_token: ^2.0.0
+  decimal: ^3.0.1
+  rational: ^2.2.3
 
 dev_dependencies:
   build_cli: ^2.2.2
diff --git a/packages/realm_dart/src/realm_dart.cpp b/packages/realm_dart/src/realm_dart.cpp
index 5bab1f20c..c3a2599f1 100644
--- a/packages/realm_dart/src/realm_dart.cpp
+++ b/packages/realm_dart/src/realm_dart.cpp
@@ -80,7 +80,7 @@ RLM_API void realm_dart_invoke_unlock_callback(realm_userdata_t error, void* unl
 // Stamped into the library by the build system (see prepare-release.yml)
 // Keep this method as it is written and do not format it.
 // We have a github workflow that looks for and replaces this string as it is written here.
-RLM_API const char* realm_dart_library_version() { return "2.3.0"; }
+RLM_API const char* realm_dart_library_version() { return "3.0.0"; }
 
 //for debugging only
 // RLM_API void realm_dart_gc() {
diff --git a/packages/realm_generator/pubspec.yaml b/packages/realm_generator/pubspec.yaml
index 55c312122..01e367f66 100644
--- a/packages/realm_generator/pubspec.yaml
+++ b/packages/realm_generator/pubspec.yaml
@@ -3,7 +3,7 @@ description: >-
              Generates RealmObject classes from Realm data model classes.
              This package is part of the official Realm Flutter and Realm Dart SDKs.
 
-version: 2.3.0
+version: 3.0.0
 
 homepage: https://www.realm.io
 repository: https://github.com/realm/realm-dart
@@ -17,7 +17,7 @@ dependencies:
   build_resolvers: ^2.0.9
   build: ^2.0.0
   dart_style: ^2.2.0
-  realm_common: ^2.3.0
+  realm_common: ^3.0.0
   source_gen: ^1.1.0
   source_span: ^1.8.0
   collection: ^1.18.0