Apache Tuweni

Clone this repo:
  1. 17f2998 Add DNSDaemon to listen to DNS entries by Antoine Toulme · 3 weeks ago master
  2. bd7c688 add a java test for sanity by Antoine Toulme · 3 weeks ago
  3. afd34d2 Support paths with spaces by Antoine Toulme · 3 weeks ago
  4. dade370 use absolute path for distribution folder by Antoine Toulme · 3 weeks ago
  5. 80bc84f more output on integration test by Antoine Toulme · 3 weeks ago

Tuweni: Apache Core Libraries for Java (& Kotlin)

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See our web site for details on the project.

Tuweni is a set of libraries and other tools to aid development of blockchain and other decentralized software in Java and other JVM languages.

It includes a low-level bytes library, serialization and deserialization codecs (e.g. RLP), various cryptography functions and primatives, and lots of other helpful utilities.

Tuweni is developed for JDK 11 or higher.

Build Instructions

Install Docker.

Clone along with submodules

git clone https://github.com/apache/incubator-tuweni.git tuweni
cd tuweni
git submodule update --init --recursive

Build the project


After a successful build, libraries will be available in build/libs.


Your contributions are very welcome! Here are a few links to help you:

Mailing lists

More information


Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.