hsevm 
The hsevm project is an implementation of the Ethereum virtual
machine (EVM) made specifically for unit testing and debugging smart
contracts. It is developed by DappHub
and integrates especially well with the
dapp tool suite. The hsevm
command line program can run unit tests, interactively debug contracts
while showing the Solidity source, or run arbitrary EVM code.
This software is alpha quality. It is not yet a 100% complete EVM (almost everything is implemented, but e.g. the precompiled contracts are missing). Testing against the Ethereum Foundation's reference test suite is begun but not completed.
Installing
Nix
DappHub maintains a repository for the Nix package manager, which works on any Linux distribution, OS X, and other Unix-likes.
These commands will install Nix, add the DappHub "channel", and
install hsevm. The channel has cached binaries for Linux and OS X.
$ curl https://nixos.org/nix/install | sh
$ nix-channel --add https://nix.dapphub.com/pkgs/dapphub
$ nix-channel --update
$ nix-env -i hsevm
This Nix channel can also be used to install
dapp, our development tool:
$ nix-env -i dapp
Static binary
If you don't want to compile anything, and you're on x86-64 Linux, you
can download a static binary from the "Releases" tab on GitHub.
If the static binary complains about a "terminfo" file, you have to
set the TERMINFO environment variable; on Ubuntu, you should do
$ export TERMINFO=/lib/terminfo
(Put that in your ~/.bashrc for convenience.)
Building with Stack or Cabal
If you can't or won't use Nix, the easiest way especially if you don't have GHC (the Haskell compiler) installed already, is to use Stack, which can take care of installing GHC for you. These commands should work:
$ curl -sSL https://get.haskellstack.org/ | sh
$ git clone https://github.com/dapphub/hsevm
$ cd hsevm && stack setup && stack install
If you prefer to use your own installation of GHC and the basic Haskell package manager, Cabal, simply run:
$ git clone https://github.com/dapphub/hsevm
$ cd hsevm && cabal configure && cabal install
Running
At this moment, the hsevm command line interface is mostly useful
with contracts developed using the
dapp tool suite along with the
ds-test unit testing framework.
After running dapp build, you can run your unit test suite with
$ hsevm dapp-test --json-file ~/my-dapp/out/foo.t.sol.json --dapp-root ~/my-dapp
or you can enter the interactive debugger using
$ hsevm interactive --json-file ~/my-dapp/out/foo.t.sol.json --dapp-root ~/my-dapp
Contact
You can find us in the DappHub chat at https://dapphub.chat/,
especially the #dev channel.