BEAM is a next generation scalable, confidential cryptocurrency based on an elegant and innovative Mimblewimble protocol.

Things that make BEAM special include:

Users have complete control over privacy - a user decides which information will be available and to which parties, having complete control over his personal data in accordance to his will and applicable laws.
Confidentiality without penalty - in BEAM confidential transactions do not cause bloating of the blockchain, avoiding excessive computational overhead or penalty on performance or scalability while completely concealing the transaction value.
No trusted setup required
Blocks are mined using Equihash Proof-of-Work algorithm.
Limited emission using periodic halving.
No addresses are stored in the blockchain - no information whatsoever about either the sender or the receiver of a transaction is stored in the blockchain.
Superior scalability through compact blockchain size - using the “cut-through” feature of Mimblewimble makes the BEAM blockchain orders of magnitude smaller than any other blockchain implementation.
BEAM supports many transaction types such as escrow transactions, time locked transactions, atomic swaps and more.
No premine. No ICO. Backed by a treasury, emitted from every block during the first five years.
Implemented from scratch in C++.

Roadmap

Current status

Fully functional wallet with key generator and storage supporting secure and confidential online transactions.
Full node with both transaction and block validation and full UTXO state management.
Equihash miner with periodic mining difficulty adjustment.
Batch Bulletproofs, the efficient non-interactive zero knowledge range proofs now in batch mode
Graphical Wallet Application for Linux, Mac and Windows platforms
Offline transactions using Secure BBS system
ChainWork - sublinear blockchain validation, based on Benedikt Bünz FlyClient idea
Compact history using cut through

Install Visual Studio >= 2017 with CMake support.
Download and install Boost prebuilt binaries https://sourceforge.net/projects/boost/files/boost-binaries/, also add BOOST_ROOT to the Environment Variables.
Download and install OpenSSL prebuilt binaries https://slproweb.com/products/Win32OpenSSL.html (Win64 OpenSSL v1.1.0h for example) and add OPENSSL_ROOT_DIR to the Environment Variables.
Download and install QT 5.11 https://download.qt.io/official_releases/qt/5.11/5.11.0/qt-opensource-windows-x86-5.11.0.exe.mirrorlist and add QT5_ROOT_DIR to the Environment Variables (usually it looks like .../5.11.0/msvc2017_64), also add QML_IMPORT_PATH (it should look like %QT5_ROOT_DIR%\qml). BTW disabling system antivirus on Windows makes QT installing process much faster.
Open project folder in Visual Studio, select your target (Release-x64 for example, if you downloaded 64bit Boost and OpenSSL) and select CMake -> Build All.
Go to CMake -> Cache -> Open Cache Folder -> beam (you'll find beam.exe in the beam subfolder, beam-wallet.exe in ui subfolder).

Make sure you have installed g++-7 libboost-all-dev libssl-dev packages.
Install latest CMake wget "https://cmake.org/files/v3.12/cmake-3.12.0-Linux-x86_64.sh" and sudo sh cmake-3.12.0-Linux-x86_64.sh --skip-license --prefix=/usr.
Add proper QT 5.11 repository depending on your system https://launchpad.net/~beineri (for example, choose Qt 5.10.1 for /opt Trusty if you have Ubuntu 14.04), install sudo apt-get install qt510declarative qt510svg packages and add export PATH=/opt/qt511/bin:$PATH.
Go to Beam project folder and call cmake -DCMAKE_BUILD_TYPE=Release . && make -j4.
You'll find Beam binary in bin folder, beam-wallet in ui subfolder.

Install Brew Package Manager.
Installed necessary packages using brew install openssl boost cmake qt5 command.
Add OPENSSL_ROOT_DIR="/usr/local/opt/openssl" and export PATH=/usr/local/opt/qt/bin:$PATH to the Environment Variables.
Go to Beam project folder and call cmake -DCMAKE_BUILD_TYPE=Release . && make -j4.
You'll find Beam binary in bin folder, beam-wallet in ui subfolder.

If you don't want to build UI don't install QT5 and comment CMakeLists.txt:130 # add_subdirectory(ui) line.